An "Abstract Datatype" (ADT) is a specification of a set of data and the set of operations that can be performed on the data. Such a data type is abstract in the sense that it is independent of various concrete implementations. The definition can be mathematical, or it can be programmed as an interface. A first class ADT supports the creation of multiple instances of the ADT, and the interface normally provides a constructor, which returns an abstract handle to new data, and several operations, which are functions accepting the abstract handle as an argument.
An Algebraic Datatype is a datatype each of whose values are data from other data types wrapped in one of the constructors of the data type. Any wrapped datum is an argument to the constructor. In contrast to other data types, the constructor is not executed and the only way to operate on the data is to unwrap the constructor using pattern matching. The most common algebraic data type is a list with two constructors: Nil or [] for an empty list, and Cons (an abbreviation of constructor), ::, or : for the combination of a new element with a shorter list (for example (Cons 1 '(2 3 4)) or 1:[2,3,4]). Special cases of algebraic types are product types i.e. records (only one constructor) and enumerated types (many constructors with no arguments). Algebraic types are one kind of composite type (i.e. a type formed by combining other types). An algebraic data type may also be an abstract data type (ADT) if it is exported from a module without its constructors. Values of such a type can only be manipulated using functions defined in the same module as the type itself.
Specifies how a physical data field is aligned. The alignment could be at a bit, byte or word boundary.
All units relating to specificaiton of angles.
An Array> is a data structure that stores a collection of elements, typically of the same type, in a contiguous block of memory. Each element in an array is identified by an index or key, which is typically a numerical identifier, either starting at '0' or '1'. The key considerations for an Array are: Fixed Size: The size of an array may be pre-determined when it is created and cannot be changed; Index-Based Access: Elements can be accessed, updated, or modified using their index; Contiguous Memory Allocation: The elements are stored in consecutive memory locations, which allows efficient access using the index. An Array is represented as ordered entries of values arranged according to its dimensionality. The number of dimensions is specified in the attribute 'dimensionality'. An array can be multi-dimensional. Multiple indices are used but they are treated as extensions of the same structure. For Example: for a 2D array arr[2][3], indices refer to the row and column positions. A 2D array is still represented as a list, where each member of the list is a list. Higher dimensional arrays can be represented as nested lists. For each dimension a new nested list is defined.
A sub-type of 'Enumerated Value'. Detailed description to be provided in a future version.
An Array Type is a type specification for ordered entries of values arranged according to the dimensions given. The dimensions are given as a list of integers where each integer is the cardinality of each dimension. The number of dimensions is specified in the attribute 'dimensionality'. Optionally a reference can be made to a variable, whose values are the array entries. The data type of the array entries is an optional field, 'elementType', which points to a data type definition. If the data type is given, then it applies to all elements. If it is not given then the elements can be of different types for each position in the array. The property qudt:typeMatrix must refer to a matrix of types. If a default value is given this can be used to place the appropriate value in a cell when an entry value is not known. If no dimensionality or dimension vector is specified the array is under-specified but still legitimate as a place-holder for a data type.
An Associative Array (or Map) is an abstract data type composed of a collection of keys and a collection of values, where each key is associated with one value. The operation of finding the value associated with a key is called a lookup or indexing, and this is the most important operation supported by an associative array. The relationship between a key and its value is sometimes called a mapping or binding.
An aural cue is a sound produced by a device or a system that is used to alert personnel of of an advisory, cautionary, warning, or emergency state.
The axial orientation of a coordinate system frame axis.
A Balanced Tree is a data type that defines the properties of data structures that represent balanced trees. A balanced tree is a tree where no leaf is much farther away from the root than any other leaf. Different balancing schemes allow different definitions of "much farther" and different amounts of work to keep them balanced.
A Dimension expresses a magnitude for a base quantity kind such as mass, length and time. DEPRECATED - each exponent is expressed as a property. Keep until a validation of this has been done.
A Big Integer is an integer that can be represented in eight octets (64 bits) of machine memory. Big integers may be signed or unsigned.
A Binary Prefix is a prefix for multiples of units in data processing, data transmission, and digital information, notably the bit and the byte, to indicate multiplication by a power of 2.
A Binary Tree is a data type that defines the properties of data structures that represent binary trees. A binary tree is a tree in which each node has at most 2 children.
A Bit Encoding Type is an encoding type for the correspondence between the two possible values of a bit, 0 or 1, and some interpretation. For example, in a boolean encoding, a bit denotes a truth value, where 0 corresponds to False and 1 corresponds to True.
A boolean data type can take on only two values.
Specifies how a boolean value is expressed
This class contains the various ways that information may be encoded into bytes.
In mathematics, the cardinality of a set is a measure of the number of elements of the set. For example, the set $A = {2, 4, 6}$ contains 3 elements, and therefore $A$ has a cardinality of 3. There are two approaches to cardinality: one which compares sets directly using bijections and injections, and another which uses cardinal numbers.
In mathematics, the cardinality of a set is a measure of the number of elements of the set. For example, the set 'A = {2, 4, 6}' contains 3 elements, and therefore 'A' has a cardinality of 3. There are two approaches to cardinality – one which compares sets directly using bijections and injections, and another which uses cardinal numbers.
A set of variables which fix a geometric object. If the coordinates are distances measured along perpendicular axes, they are known as Cartesian coordinates.
The class of all character encoding schemes. Each defines a rule or algorithm for encoding character data as a sequence of bits or bytes.
The class of all character encoding schemes, each of which defines a rule or algorithm for encoding character data as a sequence of bits or bytes.
A Character Type is a data type that defines the type and encoding of single characters.
Provides a simple way of making citations.
A collection is a grouping of some variable number of zero or more data items that need to be operated upon together in some controlled fashion. Generally, the data items will all share the same data type or are derived from some common ancestor data type.
A visual cue that uses color to distinguish it from other cues. Each color cue has exactly one corresponding coordinate point in the RGB space.
A Composite Data Structure, also referred to as Data Record is a datatype that aggregates element of possibly different types. The aggregated items are called fields or members and are usually identified or indexed by field labels.
A Composite Datatype is a datatype that is constructed from basic primitive types and other composite types.
Used to specify the values of a constant.
An enumeration of coordinate centers for coordinate systems, such as: "Earth centered", "Mars centered", "Moon centered", "Sun centered", and "Vehicle centered".
A Coordinate Member is a data type that defines the properties of a coordinate in a coordinate system.
A Coordinate System is a mathematical structure for assigning a unique n-tuple of numbers or scalars to each point in an n-dimensional space. A Coordinate System Type is a data type that defines the properties of data structures that represent coordinate systems. In geometry, a coordinate system is a system which uses one or more numbers, or coordinates, to uniquely determine the position of a point or other geometric element on a manifold such as Euclidean space. The order of the coordinates is significant. They are sometimes identified by their position in an ordered tuple and sometimes by a letter, as in 'the x-coordinate'. In elementary mathematics the coordinates are taken to be real numbers, but may be complex numbers or elements of a more abstract system such as a commutative ring. The use of a coordinate system allows problems in geometry to be translated into problems about numbers and vice versa; this is the basis of analytic geometry. In astronomy, a celestial coordinate system is a system for specifying positions of celestial objects: satellites, planets, stars, galaxies, and so on. Coordinate systems can specify a position in 3-dimensional space, or merely the direction of the object on the celestial sphere, if its distance is not known or not important. The coordinate systems are implemented in either spherical coordinates or rectangular coordinates. Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of the Earth. These differ in their choice of fundamental plane, which divides the celestial sphere into two equal hemispheres along a great circle. Rectangular coordinates, in appropriate units, are simply the cartesian equivalent of the spherical coordinates, with the same fundamental (x,y) plane and primary (x-axis) direction. Each coordinate system is named for its choice of fundamental plane.
A coordinate system is a mathematical structure for assigning a unique n-tuple of numbers or scalars to each point in an n-dimensional space. A Coordinate System Type is a data type that defines the properties of data structures that represent coordinate systems. The primary attributes of any coordinate system are the coordinate frame or orientation of the axes of the coordinate system and the coordinate center or origin of the coordinate system. The coordinate center is the easier of the two attributes to define and in trajectory-related coordinate systems is often taken to be the center of mass of natural solar system bodies such as the Earth, the Moon, or Mars. Precise definition of the coordinate frame, however, usually takes much more effort. As a result, the primary purpose is to provide a detailed description of a number of different coordinate frames commonly used in mission analysis.
A 2D coordinate system is a system for assigning a two-tuple of numbers or scalars to each point in an 2-dimensional space. A corresponding 2D Coordinate Type is a data type that defines the data type for each coordinate (tuple member) in a 2D coordinate system.
A 2D coordinates in double floating point precision for locating a point in physical space.
A 2D coordinates in single floating point precision for locating a point in physical space.
Cartesian Coordinates 2D Single Precision
A 3D coordinate system is a system for assigning a three-tuple of numbers or scalars to each point in an 3-dimensional space. A corresponding 3D Coordinate Type is a data type that defines the data type for each coordinate (tuple member) in a 3D coordinate system.
A 3D coordinates in double floating point precision for locating a point in physical space.
A 3D coordinates in single floating point precision for locating a point in physical space.
A Counting Unit is used for all units that express counts. Examples are Atomic Number, Number, Number per Year, Percent and Sample per Second.
Currency Units have their own subclass of unit because: (a) they have additional properties such as 'country' and (b) their URIs do not conform to the same rules as other units.
Data Encoding expresses the properties that specify how data is represented at the bit and byte level. These properties are applicable to describing raw data.
A Data Item holds a value that maybe a scalar or structured datatype. Quantity Value specifies which case applies.
A field is a tuple that carries a name, a type and optionally other properties that characterize a member element of a composite data structure.
A Datatype is a definition of the type of the "value" of a data item (for example, "all integers between 0 and 10"), and the allowable operations on those values; the meaning of the data; and the way values of that type can be stored. Some types are primitive - built-in to the language, with no visible internal structure. For example "Boolean"; others are composite - constructed from one or more other types (of either kind). For example lists, arrays, structures, unions. Some languages provide strong typing, others allow implicit type conversion and/or explicit type conversion.
Date String Types are scalar data types that define the properties of strings that represent calendar dates.
Date Time encodings are logical encodings for expressing date/time quantities as strings by applying unambiguous formatting and parsing rules.
A class of data types for structures that represent temporal quantities. For example, calendar dates, times, duration of time since a given epoch, etc.
A Decimal Prefix is a prefix for multiples of units that are powers of 10.
A Derived Unit is a type specification for units that are derived from other units.
A Dimensional Data Type is a data type that specifies a physical quantity or unit of measure. Information about the physical dimensions of the quantities and units is embedded in their types.
A Dimensionless Unit is a quantity for which all the exponents of the factors corresponding to the base quantities in its quantity dimension are zero.
A Discrete State is the parent class for enumerated values that express a 'State' or 'Condition'. Examples are 'on' and 'off for a switch, 'open' and 'closed' for a valve, and 'wet' and 'dry'.
A double precision data type specifies how a numeric value, such as an integer or real number, is stored in memory. Typically this occupies two words in computer memory, where the byte length of a word depends on machine address size of the computer processor. For example, on 32-bit machine architectures, a word is four bytes, and so double precision data value on a 32-bit machine architecture occupies eight bytes of memory.
A "Trajectory Coordinate System" for all earth-centered coordinates, such as: Earth mean equator and prime meridian coordinate system;; Earth true equator and prime meridian of epoch coordinate system; International celestial reference system; International terrestrial reference system; Sun centered international celestial reference system; Vehicle centered international celestial reference system.
An encoding is a rule or algorithm that is used to convert data from a native, or unspecified form into a specific form that satisfies the encoding rules. Examples of encodings include character encodings, such as UTF-8.
In computing, endianness is the ordering used to represent some kind of data as a sequence of smaller units. Typical cases are the order in which integer values are stored as bytes in computer memory (relative to a given memory addressing scheme) and the transmission order over a network or other medium. When specifically talking about bytes, endianness is also referred to simply as byte order. Most computer processors simply store integers as sequences of bytes, so that, conceptually, the encoded value can be obtained by simple concatenation. For an 'n-byte' integer value this allows 'n!' (n factorial) possible representations (one for each byte permutation). The two most common of them are: increasing numeric significance with increasing memory addresses, known as little-endian, and its opposite, called big-endian.
A sub-type of 'Tuple Member Type'.
An Enumerated Value class defines the members of an enumeration. An enumeration is a set of literals from which a single value is selected. Each literal can have a tag as an integer within a standard encoding appropriate to the range of integer values. Consistency of enumeration types will allow them, and the enumerated values, to be referred to unambiguously either through symbolic name or encoding. Enumerated values are also controlled vocabularies and as such need to be standardized. Without this consistency enumeration literals can be stated differently and result in data conflicts and misinterpretations. The tags are a set of positive whole numbers, not necessarily contiguous and having no numerical significance, each corresponding to the associated literal identifier. An order attribute can also be given on the enumeration elements. An enumeration can itself be a member of an enumeration. This allows enumerations to be enumerated in a selection. Enumerations are also subclasses of Scalar Datatype. This allows them to be used as the reference of a datatype specification.
An Enumeration is a set of literals from which a single value is selected. Each literal can have a tag as an integer within a standard encoding appropriate to the range of integer values. Consistency of enumeration types will allow them, and the enumerated values, to be referred to unambiguously either through symbolic name or encoding. Enumerated values are also controlled vocabularies and as such need to be standardized. Without this consistency enumeration literals can be stated differently and result in data conflicts and misinterpretations. The tags are a set of positive whole numbers, not necessarily contiguous and having no numerical significance, each corresponding to the associated literal identifier. An order attribute can also be given on the enumeration elements. An enumeration can itself be a member of an enumeration. This allows enumerations to be enumerated in a selection. Enumerations are also subclasses of Scalar Datatype. This allows them to be used as the reference of a datatype specification.
A Factor Unit is a type specification for a unit, exponent pair that is a component of a derived unit.
A Fixed Interval Time Series Array Type is a data type that specifies the properties of arrays that hold time series data. For example, data that has been sampled over uniformly spaced time intervals. A time series is a sequence of data points, measured typically at successive times, spaced at uniform or non-uniform time intervals.
A type for specifying an "Encoding" with the following instance(s): "Double Precision Encoding", and "Single Precision Real Encoding".
A "Encoding" with the following instance(s): "Double Precision Encoding", "Single Precision Real Encoding".
A Frame Type specifies the intertial type of a coordinate frame as either inertial, rotating, or non-rotating.
A function data type defines the input and output data type for a function or method. The data type includes at least the function name and the number of its parameters. In some programming languages, it may also specify the function's return type or the types of its arguments.
A Graph is an instance of a kind of abstract data type, that consists of a set of nodes (also called vertices) and a set of edges that establish relationships (connections) between the nodes. A Graph Type is a data type that defines the properties of data structures that represent graphs and their members (nodes and edges).
A sub-type of 'Aerospace coordinate system'.
A heap is a specialized tree-based data structure that satisfies the condition: if B is a child node of A, then $key(A) \ge key(B)$. This implies that an element with the greatest key is always in the root node, and so such a heap is sometimes called a max heap. Alternatively, if the comparison is reversed, the smallest element is always in the root node, which results in a min heap. The function or method that implements the key() operator is specified by the heap type.
An Array> is a data structure that stores a collection of elements, typically of the same type, in a contiguous block of memory. Each element in an array is identified by an index or key, which is typically a numerical identifier, either starting at '0' or '1'. The key considerations for an Array are: Fixed Size: The size of an array may be pre-determined when it is created and cannot be changed; Index-Based Access: Elements can be accessed, updated, or modified using their index; Heterogenous Elements: all elements in the array may be of different data types; Contiguous Memory Allocation: the elements are stored in consecutive memory locations, which allows efficient access using the index. An Array is represented as ordered entries of values arranged according to its dimensionality. The number of dimensions is specified in the attribute 'dimensionality'. The property 'qudt:datatype' refers to a list if the datatypes of the elements. An heterogenous array can be multi-dimensional. Multiple indices are used but they are treated as extensions of the same structure. For example: for a 2D array arr[2][3], indices refer to the row and column positions. A 2D array is still represented as a list, where each member of the list is a list. Higher dimensional arrays can be represented as nested lists. For each dimension a new nested list is defined.
An Array> is a data structure that stores a collection of elements, typically of the same type, in a contiguous block of memory. Each element in an array is identified by an index or key, which is typically a numerical identifier, either starting at '0' or '1'. The key considerations for an Array are: Fixed Size: The size of an array may be pre-determined when it is created and cannot be changed; Index-Based Access: Elements can be accessed, updated, or modified using their index; Homogeneous Elements: all elements in an array must be of the same datatype; Contiguous Memory Allocation: The elements are stored in consecutive memory locations, which allows efficient access using the index. An Array is represented as ordered entries of values arranged according to its dimensionality. The number of dimensions is specified in the attribute 'dimensionality'. The property 'qudt:datatype' refers to the datatype of the elements. An array can be multi-dimensional. Multiple indices are used but they are treated as extensions of the same structure. For Example: for a 2D array arr[2][3], indices refer to the row and column positions. A 2D array is still represented as a list, where each member of the list is a list. Higher dimensional arrays can be represented as nested lists. For each dimension a new nested list is defined.
An Integer Type is a data type that specifies how integer numbers are represented and stored in machine memory.
The interval type allows for the degree of difference between items, but not the ratio between them. Examples include temperature with the Celsius scale, which has two defined points (the freezing and boiling point of water at specific conditions) and then separated into 100 intervals, date when measured from an arbitrary epoch (such as AD), percentage such as a percentage return on a stock, location in Cartesian coordinates, and direction measured in degrees from true or magnetic north. Ratios are not meaningful since 20 °C cannot be said to be "twice as hot" as 10 °C, nor can multiplication/division be carried out between any two dates directly. However, ratios of differences can be expressed; for example, one difference can be twice another. Interval type variables are sometimes also called "scaled variables", but the formal mathematical term is an affine space (in this case an affine line). Characteristics: median, percentile & Monotonic increasing (order (<) & totally ordered set.
A 'LargeObject' datatype is used to store blocks of unstructured data (such as text, graphic images, video clips, and sound waveforms). They often are used to allow efficient, random, piece-wise access to the data.
A "Trajectory Coordinate System" with the following instance(s): "Local vertical curvilinear coordinate system", "Local vertical local horizontal coordinate system", "Vehicle centered local vertical curvilinear coordinate system".
Logarithmic units are abstract mathematical units that can be used to express any quantities (physical or mathematical) that are defined on a logarithmic scale, that is, as being proportional to the value of a logarithm function. Examples of logarithmic units include common units of information and entropy, such as the bit, and the byte, as well as units of relative signal strength magnitude such as the decibel.
A "Long Integer" is an integer that can be represented in four octets (32 bits) of machine memory. Long integers may be signed or unsigned.
Two slightly different coordinate frames are commonly used to define the orientation of the axes of a lunar body-fixed coordinate system: a mean Earth/rotation frame and a principal axis coordinate frame. The mean Earth/rotation frame (sometimes called the "Mean Earth/polar axis" frame) is a lunar body-fixed coordinate frame. This has the X-axis aligned with the mean direction from the Moon to the Earth and the Z-axis aligned with the mean axis of rotation of the Moon. The principal axis frame is a lunar body-fixed coordinate frame aligned with the principal axes of the Moon. Due to the fact that the Moon is synchronously rotating but is not exactly symmetric, the principal axes and the mean Earth/rotation axes of the Moon do not coincide.
A Map Type is an abstract data type that defines the properties of map data structures. A Map (or Associative Array) is an abstract data structure composed of a collection of keys and a collection of values, where each key is associated with one value. The operation of finding the value associated with a key is called a lookup or indexing, and this is the most important operation supported by an associative array. The relationship between a key and its value is sometimes called a mapping or binding.
A "Trajectory Coordinate System" with the following instance(s): "Mars mean equator and IAU-Node of epoch", "Mars mean equator and prime meridian body-fixed".
A Matrix is a data type that specifies the properties of an N-dimensional data structure.
A Multi-Dimensional Array is an extension of a standard one-dimensional array, where elements are organized in a grid-like structure across two or more dimensions. It is a collection of elements arranged in a tabular or multi-dimensional structure for representing complex datasets, such as matrices, tensors, or higher-dimensional data. The elements of a multi-dimensional array are N-tuples, where 'N' corresponds to the dimensionality of the array. Each element is specified using the property 'qudt:element'. Ordinary or one-dimensional arrays are indexed by a single integer. For a multi-dimensional array, the index into the array uses an ordered list of integers, such as in 'a[3,1,5]'. The length of the list of integers used to index into the multi-dimensional array is always the same. This is referred to as the array's dimensionality. The bounds on each of these are called the array's dimensions.
Data formats for storing and manipulating scalar and multidimensional data in a platform and discipline independent manner, for example HDF, CDF and netCDF.
A bag is a set in which elements may be repeated.
A tuple containing n objects is known as an "n-tuple". For example the 4-tuple (or "quadruple"), with components of respective types PERSON, DAY, MONTH and YEAR. This could be used to record that a certain person was born on a certain day of a certain month of a certain year.
National Institute of Standards and Technology (NIST) Special Publication 811 Comments on some quantities and their units
A nominal scale differentiates between items or subjects based only on their names or (meta-)categories and other qualitative classifications they belong to; thus dichotomous data involves the construction of classifications as well as the classification of items. Discovery of an exception to a classification can be viewed as progress. Numbers may be used to represent the variables but the numbers do not have numerical value or relationship: for example, a Globally unique identifier. Examples of these classifications include gender, nationality, ethnicity, language, genre, style, biological species, and form. In a university one could also use hall of affiliation as an example.
The non-rotating (or "inertial") coordinate frames are defined by taking a "snapshot" of the orientation of a particular set of right-handed, orthogonal axes at a specific epoch or time. In other words, the non-rotating coordinate frame, however it is defined, is frozen or fixed at a specific time - for all time. These non-rotating coordinate frames are referred to as "of Epoch" coordinate frames.
Numeric data types are data types whose values denote quantities as defined by a mathematical number system.
A discrete state enumeration whose values are 'off' and 'on'. The 'off' value is encoded as a zero (0) and the 'on' value as a one (1).
A discrete state enumeration whose values are 'off' and 'on'. The 'on' value is encoded as a zero (0) and the 'off' value as a one (1).
An Ordered Collection Kind is an abstract data type that defines the properties of collection data structures whose members can be linearly ordered. An ordered collection is a collection together with an ordering relation (such as greater than) that linearly orders the collection elements.
An "Ordered Tree Type" is a data type that defines the properties of data structures that represent ordered trees. An ordered tree is a tree where the children of every node are ordered, that is, there is a first child, second child, third child, etc. Typically a type specification for an ordered tree will include the comparison operator (such as lt or gt) that is used to order the nodes.
Describes how a data or information structure is ordered.
The ordinal type allows for rank order (1st, 2nd, 3rd, etc.) by which data can be sorted, but still does not allow for relative degree of difference between them. Examples include, on one hand, dichotomous data with dichotomous (or dichotomized) values such as: 'sick' vs. 'healthy' when measuring health, 'guilty' vs. 'innocent' when making judgments in courts, 'wrong/false' vs. 'right/true' when measuring truth value, and, on the other hand, non-dichotomous data consisting of a spectrum of values, such as: 'completely agree', 'mostly agree', 'mostly disagree', 'completely disagree' when measuring opinion.
An ordinal data type is a data type that specifies the properties of values that can easily be put in a one to one correspondence with a subset of the natural numbers. Examples include boolean, character, and integer data types.
This describes how unused bits of a field are filled. Unused bits could be set to one or zero. A third option is "don't care".
An enumeration of literals that signify whether a parameter is modifiable and if so, by whom.
A partial array is an Array with two attributes that define the starting and ending indices of the elements that are provided.
A physical address is a pointer to a memory location.
A Physical constant is a physical quantity that is generally believed to be both universal in nature and constant in time. It can be contrasted with a mathematical constant, which is a fixed numerical value but does not directly involve any physical measurement. There are many physical constants in science, some of the most widely recognized being: the speed of light in vacuum c, Newton's gravitational constant G, Planck's constant h, the electric permittivity of free space ε0, and the elementary charge e. Physical constants can take many dimensional forms, or may be dimensionless depending on the system of quantities and units used.
A "Tagged Enumeration" with the following instance(s): "negative", "positive".
Positive Integers are integers that are either non-zero and non-negative.
Quantifiable is an aspect class that affords to an entity properties for being measurable, observable, or countable.
A Quantity is the measurement of an observable property of a particular object, event, or physical system. A quantity is always associated with the context of measurement (i.e. the thing measured, the measured value, the accuracy of measurement, etc.) whereas the underlying quantity kind is independent of any particular measurement. Thus, length is a quantity kind while the height of a rocket is a specific quantity of length; its magnitude that may be expressed in meters, feet, inches, etc. Examples of physical quantities include physical constants, such as the speed of light in a vacuum, Planck's constant, the electric permittivity of free space, and the fine structure constant. In other words, quantities are quantifiable aspects of the world, such as the duration of a movie, the distance between two points, velocity of a car, the pressure of the atmosphere, and a person's weight; and units are used to describe their numerical measure. Many quantity kinds are related to each other by various physical laws, and as a result, the associated units of some quantity kinds can be expressed as products (or ratios) of powers of other quantity kinds (e.g., momentum is mass times velocity and velocity is defined as distance divided by time). In this way, some quantities can be calculated from other measured quantities using their associations to the quantity kinds in these expressions. These quantity kind relationships are also discussed in dimensional analysis. Those that cannot be so expressed can be regarded as "fundamental" in this sense. A quantity is distinguished from a "quantity kind" in that the former carries a value and the latter is a type specifier.
A Quantity Kind is any observable property that can be measured and quantified numerically. Familiar examples include physical properties such as length, mass, time, force, energy, power, electric charge, etc. Less familiar examples include currency, interest rate, price to earning ratio, and information capacity.
$\text{Quantity Kind Dimension Vector}$ describes the dimensionality of a quantity kind in the context of a system of units. In the SI system of units, the dimensions of a quantity kind are expressed as a product of the basic physical dimensions mass ($M$), length ($L$), time ($T$) current ($I$), amount of substance ($N$), luminous intensity ($J$) and absolute temperature ($\theta$) as $dim \, Q = L^{\alpha} \, M^{\beta} \, T^{\gamma} \, I ^{\delta} \, \theta ^{\epsilon} \, N^{\eta} \, J ^{\nu}$. The rational powers of the dimensional exponents, $\alpha, \, \beta, \, \gamma, \, \delta, \, \epsilon, \, \eta, \, \nu$, are positive, negative, or zero. For example, the dimension of the physical quantity kind $\it{speed}$ is $\boxed{length/time}$, $L/T$ or $LT^{-1}$, and the dimension of the physical quantity kind force is $\boxed{mass \times acceleration}$ or $\boxed{mass \times (length/time)/time}$, $ML/T^2$ or $MLT^{-2}$ respectively.
A CGS Dimension Vector is used to specify the dimensions for a C.G.S. quantity kind.
A CGS EMU Dimension Vector is used to specify the dimensions for EMU C.G.S. quantity kind.
A CGS ESU Dimension Vector is used to specify the dimensions for ESU C.G.S. quantity kind.
A CGS GAUSS Dimension Vector is used to specify the dimensions for Gaussioan C.G.S. quantity kind.
A CGS LH Dimension Vector is used to specify the dimensions for Lorentz-Heaviside C.G.S. quantity kind.
A Quantity Kind List is a list of qudt:QuantityKind. They are used, for instance, to specify the quantity kind in a Mass Properties Array.
A $\textit{Quantity Type}$ is an enumeration of quantity kinds. It specializes $\boxed{dtype:EnumeratedValue}$ by constrinaing $\boxed{dtype:value}$ to instances of $\boxed{qudt:QuantityKind}$.
A Ratio Scale possesses a meaningful (unique and non-arbitrary) zero value. Most measurement in the physical sciences and engineering is done on ratio scales. Examples include mass, length, duration, plane angle, energy and electric charge. In contrast to interval scales, ratios are now meaningful because having a non-arbitrary zero point makes it meaningful to say, for example, that one object has "twice the length" of another (= is "twice as long"). Very informally, many ratio scales can be described as specifying "how much" of something (i.e. an amount or magnitude) or "how many" (a count). The Kelvin temperature scale is a ratio scale because it has a unique, non-arbitrary zero point called absolute zero.
A real number is represented as a factor, called the mantissa, multiplied by a power (the exponent) of a base. Different bases yield different approximations to real numbers, and conversion between them is limited in accuracy. Four floating-point types are defined in 'IEEE-754 Standard for Binary Floating-Point'. These types are 'single', 'extended single', 'double', and 'extended double'.
A real double precision data type specifies how a real number, or an approximation of a real number is stored in memory. Typically this occupies two words in computer memory, where the byte length of a word depends on machine address size of the computer processor. For example, on 32-bit machine architectures, a word is four bytes. An example of a real double precision data type specification is the IEEE 754 standard for encoding binary or decimal floating point numbers in 8 bytes for storage on 32-bit machine architectures.
A Real Number Type is the class of data values that approximate real numbers in finite precision. Often, such values are expressed in "mantissa, base, exponent" form. Any rational number can be expressed in the form m*b^e, where m (the mantissa), b (the base), and e (the exponent) are integers. Typically, b is chosen to be either 2 or 10, and then the values of m and e are determined given the choice of base.
A real single precision data type specifies how a real number, or an approximation of a real number is stored in memory that occupies one word in computer memory, where the byte length of a word depends on machine address size of the computer processor. For example, on 32-bit machine architectures, a word is four bytes. An example of a real single precision data type specification is the IEEE 754 standard for encoding binary or decimal floating point numbers in 4 bytes for storage on 32-bit machine architectures.
A Record Type is a type whose values are records, i.e. aggregates of several items of possibly different types. The aggregated items are called fields or members and are usually identified or indexed by field labels.
A reference is an object containing information which refers to data stored elsewhere, as opposed to containing the data itself. A reference data type is a data type that specifies how a reference is represented and stored in memory, as well as the operations that can be performed on reference values. The most common example of a reference data type is a pointer.
A Reference Frame (or "frame of reference") in physics, may refer to a coordinate system or set of axes. The frame serves as the datum to measure the position, orientation, and other properties of objects in it. Reference frame may refer to an observational reference frame tied to the state of motion of an observer. Reference frame may also refer to both an observational reference frame and an attached coordinate system as a unit.
A Data Item holds a value that is compliant with a specified Datatype.
Scalar data types are those that have a single value. The permissible values are defined over a domain that may be integers, float, character or boolean. Often a scalar data type is referred to as a primitive data type.
Scales (also called "scales of measurement" or "levels of measurement") are expressions that typically are based on scale types.
Scales, or scales of measurement (or categorization) provide ways of quantifying measurements, values and other enumerated values according to a normative frame of reference. Four different types of scales are typically used. These are interval, nominal, ordinal and ratio scales.
A Sequence is an enumerated collection of objects in which repetitions are allowed. Like a set, it contains members (also called elements, or terms). The number of elements (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and exactly the same elements can appear multiple times at different positions in the sequence. Formally, a sequence can be defined as a function whose domain is either the set of the natural numbers (for infinite sequences) or the set of the first n natural numbers (for a sequence of finite length n). The position of an element in a sequence is its rank or index; it is the integer from which the element is the image. It depends on the context or of a specific convention, if the first element has index 0 or 1. [Wikipedia]
A Set is an abstract data type that defines the properties of sets. A set is a collection (container) of certain values, without any particular order, and no repeated values. It corresponds with a finite set in mathematics.
A Short Integer is an integer that can be represented in two octets (16 bits) of machine memory. Short integers may be signed or unsigned.
A Signed Big Integer is a signed integer that can be represented in eight octets (64 bits) of machine memory.
Signed Integers are integers can take on both positive and negative values.
A Signed Long Integer is a signed integer that can be represented in four octets (32 bits) of machine memory.
A "Signed Medium Integers" is an integer of 24 bits that can take on both positive and negative values.
A Signed Short Integer is a signed integer that can be represented in four octets (32 bits) of machine memory.
A signed type is a numeric type that distinguishes between positive and negative numbers using an encoding scheme, such as sign and magnitude, one's compliment, and two's compliment to represent negative numbers.
A Signed Variable Length Integer data type defines a data structure for representing signed integers that uses a variable number of bits depending on the magnitude of the integer. Typically, variable length integer data types are between one and 64 bits in length.
Specifics whether a value should be signed or unsigned.
A single precision data type specifies how a numeric value, such as an integer or real number, is stored in memory that occupies one word in computer memory, where the byte length of a word depends on machine address size of the computer processor. For example, on 32-bit machine architectures, a word is four bytes. A single precision data value on a 32-bit machine architecture occupies four bytes of memory.
The solid angle subtended by a surface S is defined as the surface area of a unit sphere covered by the surface S's projection onto the sphere. A solid angle is related to the surface of a sphere in the same way an ordinary angle is related to the circumference of a circle. Since the total surface area of the unit sphere is 4*pi, the measure of solid angle will always be between 0 and 4*pi.
In control engineering, a state space representation is a mathematical model of a physical system as a set of input, output and state variables related by first-order differential equations. To abstract from the number of inputs, outputs and states, the variables are expressed as vectors. The differential and algebraic equations are written in matrix form (the last one can be done when the dynamical system is linear and time invariant).
A state vector in general control systems describes the observed states of an object in state space. For example in variables of the degrees of freedom for motion. As data types, state vector types are used to specify the structure of state vectors, such as how the observed state is encoded.
String Encoding Type is an "Encoding" with the following instance(s): "UTF-16 String", "UTF-8 Encoding".
An "Encoding" with the following instance(s): "qudt:UTF8-StringEncoding", "qudt:UTF16-StringEncoding".
A String Type is a data type that specifies the properties of a list structure that holds characters.
String UTF-16 is a string data type that specifies the properties of string data structures which encode strings using the UTF-16 encoding. UTF-16 is the native internal representation of text in many software systems, for example: Microsoft Windows NT/Windows 2000/Windows XP/Windows CE; Qualcomm BREW, and Symbian operating systems; the Java and .NET byte code environments; Mac OS X's Cocoa and Core Foundation frameworks; Qt cross-platform graphical widget toolkit.
String UTF-8 Type is a string data type that specifies the properties of string data structures which encode strings using the UTF-8 encoding. UTF-8 includes ASCII, otherwise referred to as IA-5 (International Alphabet 5, as standardized by International Organization for Standardization [ISO]) as the first 128 values. The Internet Engineering Task Force (IETF) requires all Internet protocols to identify the encoding used for character data with UTF-8 as at least one supported encoding. The Internet Mail Consortium (IMC) recommends that all e-mail programs must be able to display and create mail using UTF-8.
A Structured Datatype, in contrast to a scalar data type, is used to characterize classes of complex data structures. Examples are collections, linked and indexed lists, trees, ordered trees, and multi-dimensional file formats.
A `SymmetricRelation` is modeling construct used to define symmetric behavior for appropriate relations.
A System of Quantity Kinds is a set of one or more quantity kinds together with a set of zero or more algebraic equations that define relationships between quantity kinds in the set. In the physical sciences, the equations relating quantity kinds are typically physical laws and definitional relations, and constants of proportionality. Examples include Newton's First Law of Motion, Coulomb's Law, and the definition of velocity as the instantaneous change in position. In almost all cases, the system identifies a subset of base quantity kinds. The base set is chosen so that all other quantity kinds of interest can be derived from the base quantity kinds and the algebraic equations. If the unit system is explicitly associated with a quantity kind system, then the unit system must define at least one unit for each quantity kind. From a scientific point of view, the division of quantities into base quantities and derived quantities is a matter of convention.
A System of Units is a set of units which are chosen as the reference scales for some set of quantity kinds together with the definitions of each unit. Units may be defined by experimental observation or by proportion to another unit not included in the system. If the unit system is explicitly associated with a quantity kind system, then the unit system must define at least one unit for each quantity kind.
A Table Type is a data type that specifies the properties of table data structures. A table is both a mode of visual communication and a means of arranging data. The precise conventions and terminology for describing tables varies depending on the context. Moreover, tables differ significantly in variety, structure, flexibility, notation, representation and use.
An enumeration where each literal has a tag that is a non-negative integer. These enumerations are likely to have their literals encoded - hence the need for the tag.
A Text String Type has encodings that are specified in subclasses or in connection to character arrays in Structured Datatypes.
A Three Body Rotating Coordinate System is one that is associated with two different three-body systems. For example, the Sun-Earth-spacecraft system and the Earth-Moon-spacecraft system. The lunar coordinate systems are primarily used when operating in close proximity to the Moon. There are, however, a few additional coordinate systems that are also useful when analyzing (and depicting) trajectories in the vicinity of the Earth-Moon system. The Sun-Earth and Earth-Moon rotating coordinate frames are defined as follows: The pole vector or Z-axis of the coordinate frame is set equal to the instantaneous orbit normal of the secondary (smaller) body about the primary (larger) body. The X-axis is set equal to the vector from the primary body center of mass (CM) to the secondary body CM. The X-axis rotates at a rate equal to the instantaneous rotation rate of the secondary body about the primary body.
Three Body Rotating Coordinate System Type
A three-tuple is a tuple with exactly three members. A Three-Tuple Type is a data type that defines the type properties of a class of three-tuples and their members.
The class of data values that denote a point in time. Time values may be encoded in a 12-hour clock or a 24-hour clock, such as 1:35 AM, or 13:35.
A relative interval that is an increment in time. For example, this is used in time series arrays to express the time point of a vector of values.
A Time Series Array is a data type that specifies the properties of arrays that hold time series data. A time series is a sequence of data points, measured at successive time intervals. The time intervals may be uniformly or non-uniformly spaced.
A Time Series Array Type is a data type that specifies the properties of arrays that hold time series data. A time series is a sequence of data points, measured at successive time intervals. The time intervals may be uniformly or non-uniformly spaced.
Time takes a number of forms, depending on the units used (e.g., year, day, minute, millisecond, or combinations thereof) and the origin (i.e., time zero) to which the time value is related.
A "Tree" is a data type that defines the properties of data structures that represent trees. Each node is either a leaf or an internal node. An internal node has one or more child nodes and is called the parent of its child nodes. Leaf nodes have no chidren. Nodes that share the same parent are siblings. In graph theoretic terminology, a tree is a connected, undirected, acyclic graph.
The term Tuple originated as an abstraction of the sequence: single, double, triple, quadruple, quintuple, n-tuple. In mathematics, a tuple is a finite sequence (also known as an Ordered List of objects, each of a specified type. The n can be any non-negative integer.
Tuple Member defines the properties of a member of a tuple. It is used to provide fine grained type specification to the elements of tuples.
Tuple originated as an abstraction of the sequence: single, double, triple, quadruple, quintuple, n-tuple. In mathematics, a tuple is a finite sequence (also known as an Ordered List of objects, each of a specified type. The n can be any non-negative integer.
A 2-tuple is called a pair. For example, a complex number can be represented as a 2-tuple. 2D coordinates are sometimes represented as 2-tuples.
A 2-tuple is called a pair. For example, a complex number can be represented as a 2-tuple, and 2D coordinates are sometimes represented as 2-tuples.
Members of this class are matrix data structures that describe the datatypes of a class of matrices. That is, the members of this class are matrices with cells that contain datatypes (c.f. type:Datatype) and are used to describe the datatype structure of other matrices.
A Type Vector is a vector whose elements are data types. They are used to specify the type of each component of a vector or class of vectors.
A unit of measure, or unit, is a particular quantity value that has been chosen as a scale for measuring other quantities the same kind (more generally of equivalent dimension). For example, the meter is a quantity of length that has been rigorously defined and standardized by the BIPM (International Board of Weights and Measures). Any measurement of the length can be expressed as a number multiplied by the unit meter. More formally, the value of a physical quantity Q with respect to a unit (U) is expressed as the scalar multiple of a real number (n) and U, as $Q = nU$.
An Unsgned Big Integer is an unsigned integer that can be represented in eight octets (64 bits) of machine memory.
Unsgned Integers are integers that are either strictly non-negative or non-positive.
An Unsigned Long Integer is an unsigned integer that can be represented in four octets (32 bits) of machine memory.
An "Unsigned Medium Integer" is an integer of 24 bits that only takes on both positive values.
An Unsigned Short Integer is an unsigned integer that can be represented in four octets (32 bits) of machine memory.
An unsigned data type is a numeric type that does not distinguish between positive and negative values.
An "Unsigned Variable Length Integer" data type defines a data structure for representing unsigned integers that uses a variable number of bits depending on the magnitude of the integer. Typically, variable length integer data types are between one and 64 bits in length.
A Variable Interval Time Series Array Type is a data type that specifies the properties of arrays that hold time series data that has been sampled over non-uniformly spaced time intervals. A time series is a sequence of data points, measured typically at successive times, spaced at uniform or non-uniform time intervals. For variable interval time series, the successive time intervals may follow a repeating pattern, or may be completely random.
Variable Interval Time Series Array Type
A "Variable Length Integer" data type defines a data structure for representing integers that uses a variable number of bits depending on the magnitude of the integer. Typically, variable length integer data types are between one and 64 bits in length.
A Vector is an array data type that can have a dimensionality of one, or more elements. Vectors can represent physical quantities, such as velocity, force, displacement; mathematical objects such as points or directions in space; and abstract representations for things such as colors, features, or embeddings in computational contexts. As a one-dimensional mathematical object it can represent a quantity with both magnitude and direction in space. One-dimensional vectors can be thought of as a special case of a 1D array. For example a 3D vector can be expressed as a list of coordinates: [x,y,z]. A vector in n-dimensional space can represent a point, a direction, or a linear combination of basis vectors. Vectors can represent quantifiable values. For example a car moving at 60 m/hr to the north, assuming north is along the y-axis, can be represented in 2D as: [0, 60] In machine learning a Feature Vector can be expressed for a dataset entry as: [5.1, 3.5, 1.4, 0.2] Im AI for text processing a Word Embedding Vector is expressed as a N-dimensional space, where N can be a large number.
An abbreviation for a unit is a short ASCII string that is used in place of the full name for the unit in contexts where non-ASCII characters would be problematic, or where using the abbreviation will enhance readability. When a power of abase unit needs to be expressed, such as squares this can be done using abbreviations rather than symbols. For example, sq ft means square foot, and cu ft means cubic foot.
Accuracy is the degree to which a given quantity is correct and free from error. For example, a quantity specified as 100+/-1 has an (absolute) accuracy of +/-1 (meaning its true value can fall in the range 99-101), while a quantity specified as 100+/-2% has a (relative) accuracy of +/-2% (meaning its true value can fall in the range 98-102). The concepts of accuracy and precision are both closely related and often confused. While the accuracy of a number x is given by the number of significant decimal (or other) digits to the right of the decimal point in x, the precision of x is the total number of significant decimal (or other) digits.
This property relates a date string encoding (c.f. type:DateStringEncodingType) to one or more XML Schema compliant regular expressions that together determine the allowed lexical expressions that can be unambiguously parsed to determine a temporal quantity.
This property relates a unit of measure with a unit system that may or may not define the unit, but within which the unit is compatible.
See this page on the QUDT GitHubWiki on how "qudt:applicableUnit" is computed from "qudt:hasQuantityKind" and then materialized.
This property relates a funciton data type with the type of its arg1.
This property relates a funciton data type with the type of its arg2.
This property relates a funciton data type with the type of its arg3.
This property relates a function data type with the type of one of its arguments.
This property associates a system of quantities with an enumeration that enumerates the base dimensions of the system in canonical order.
This property relates a unit of measure to the system of units in which it is defined as a base unit for the system. The base units of a system are used to define the derived units of the system by expressing the derived units as products of the base units raised to a rational power.
A datatype is bounded if its value space has either a finite upper and lower bound. Either bound may be inclusive or exclusive.
Byte order is an enumeration of two values: 'Big Endian' and 'Little Endian' and is used to denote whether the most signiticant byte is either first or last, respectively.
Datatype name in the C programming language
A system of units is coherent with respect to a system of quantities and equations if the system of units is chosen in such a way that the equations between numerical values have exactly the same form (including the numerical factors) as the corresponding equations between the quantities. In such a coherent system, no numerical factor other than the number 1 ever occurs in the expressions for the derived units in terms of the base units. For example, the $newton$ and the $joule$. These two are, respectively, the force that causes one kilogram to be accelerated at 1 metre per (1) second per (1) second, and the work done by 1 newton acting over 1 metre. Being coherent refers to this consistent use of 1. In the old c.g.s. system , with its base units the centimetre and the gram, the corresponding coherent units were the dyne and the erg, respectively the force that causes 1 gram to be accelerated at 1 centimetre per (1) second per (1) second, and the work done by 1 dyne acting over 1 centimetre. So $1\,newton = 10^5 dyne$, $1 joule = 10^7 erg$, making each of the four compatible in a decimal sense within its respective other system, but not coherent therein.
Alphabetic Currency Code as defined by ISO 4217. For example, the currency code for the US dollar is USD.
The currency exponent indicates the number of decimal places between a major currency unit and its minor currency unit. For example, the US dollar is the major currency unit of the United States, and the US cent is the minor currency unit. Since one cent is 1/100 of a dollar, the US dollar has a currency exponent of 2. However, the Japanese Yen has no minor currency units, so the yen has a currency exponent of 0.
Three-digit Currency Code as defined by ISO 4217. For example, the currency number for the US dollar is "840".
This property relates a unit of measure with the unit system that defines the unit.
This property relates a unit of measure to the unit system in which the unit is derived from the system's base units with a proportionality constant of one.
This property relates a unit of measure to the unit system in which the unit is derived from the system's base units without proportionality constant of one.
This property relates a unit of measure to the system of units in which it is defined as a derived unit. That is, the derived unit is defined as a product of the base units for the system raised to some rational power.
dimension exponent for amount of substance
dimension exponent for luminous intensity
dimension exponent for thermodynamic temperature
The number of dimensions making up a matrix or an array. For example a 4 by 4 array has a dimensionality of 2. Whereas a vector or a string has a dimensionality of 1.
The extent of each dimension making up a matrix or an array. For example a 4 by 4 array has dimensions (4 4), whereas a vector or a string has dimensions (1).
The extent of each dimension making up an array or matrix. Dimensions are expressed as an integer list. For example a 4 by 4 array has dimensions (4 4), whereas a vector or a string has dimensions (1).
This property is used to relate a structured data type with the data type the structured type's elements. It is used for structured data types with elements that are all of the same type.
This property is used to describe the quantity kind for a dimensional data type.
This property is used to label the field of a composite data structure.
This property determines the allowed number of element types that a structured data type may have.
This property is used to define the data type of the elements of a structured data type. It is used for structured data types with elements that are of different types.
The 'qudt:example' property is used to annotate an instance of a class with a reference to a concept that is an example. The type of this property is 'rdf:Property'. This allows both scalar and object ranges.
An 'expression' is a finite combination of symbols that are well-formed according to rules that apply to units of measure, quantity kinds and their dimensions.
For a derived unit that is not exactly the product of its factor units, this property defines the scalar with which that product has to be multiplied with.
A field code is a generic property for representing unique codes that make up other identifers. For example each QuantityKind class caries a domain code as its field code.
This property is used to list the field labels for a record type.
This property is used to state the number of arguments for a function type.
This property relates a unit system with a unit of measure that is not defined by or part of the system, but is allowed for use within the system. An allowed unit must be convertible to some dimensionally eqiuvalent unit that is defined by the system.
This property relates a system of units to a base unit defined within the system. The base units of a system are used to define the derived units of the system by expressing the derived units as products of the base units raised to a rational power.
A coherent unit of measurement for a unit system is a defined unit that may be expressed as a product of powers of the system's base units with the proportionality factor of one.
This property relates a unit system with a unit of measure that is defined by the system.
has quantity kind dimension vector denominator part
This property relates a system of units to a unit of measure that is defined within the system in terms of the base units for the system. That is, the derived unit is defined as a product of the base units for the system raised to some rational power.
This property relates a derived unit to one of its constituent factor units
This property is used to specify a list of quantity kinds.
This property relates a factor unit to its unit or system of units with a unit of measure that is either: a) defined by the system, b) accepted for use by the system and is convertible to a unit of equivalent dimension that is defined by the system, c) a reference to the unit of measure of a quantity (variable or constant) of interest. Systems of units may distinguish between base and derived units. Base units are the units which measure the base quantities for the corresponding system of quantities. The base units are used to define units for all other quantities as products of powers of the base units. Such units are called derived units for the system.
Used to relate a class to one or more graphs where vocabularies for the class are defined.
The "qudt:id" is an identifier string that uniquely identifies a QUDT concept. The identifier is constructed using a prefix. For example, units are coded using the pattern: "UCCCENNNN", where "CCC" is a numeric code or a category and "NNNN" is a digit string for a member element of that category. For scaled units there may be an addition field that has the format "QNN" where "NN" is a digit string representing an exponent power, and "Q" is a qualifier that indicates with the code "P" that the power is a positive decimal exponent, or the code "N" for a negative decimal exponent, or the code "B" for binary positive exponents.
Provides a way to reference a source that provided useful but non-normative information.
This property is used to identify a Quantity instance that is a measure of a change, or interval, of some property, rather than a measure of its absolute value. This is important for measurements such as temperature differences where the conversion among units would be calculated differently because of offsets.
This property relates a unit of measure with a system of units that either a) defines the unit or b) allows the unit to be used within the system.
Provides a way to reference the ISO unit definition.
The symbol is a glyph that is used to represent some concept, typically a unit or a quantity, in a compact form. For example, the symbol for an Ohm is $ohm$. This contrasts with 'unit:abbreviation', which gives a short alphanumeric abbreviation for the unit, 'ohm' for Ohm.
The length of a structure, for example the size of a vector
In scientific notation, the mantissa of a real number is the integer coefficient preceding the base raised to the exponent.
maxExclusive is the exclusive upper bound of the value space for a datatype with the ordered property. The value of maxExclusive must be in the value space of the base type or be equal to {value} in {base type definition}.
maxInclusive is the inclusive upper bound of the value space for a datatype with the ordered property. The value of maxInclusive must be in the value space of the base type.
The maximium mantissa is the largest integer that may appear as a coefficient in a finite precision representation of a real number. For a given numeric data type, the value of maxMantissa} (M) and the values of base (b) and precision (p) are related by the formula: M = b - 1 .
This property is used to define a collection's elements.
This property is used to define the data type of a collection's elements. It is used for collections with elements that are all of the same type.
minExclusive is the exclusive lower bound of the value space for a datatype with the ordered property. The value of minExclusive must be in the value space of the base type or be equal to {value} in {base type definition}.
minInclusive is the inclusive lower bound of the value space for a datatype with the ordered property. The value of minInclusive must be in the value space of the base type.
The minimium mantissa is the negative integer with the greatest magnitude that may appear as a coefficient in a finite precision representation of a real number. For a given numeric data type, the value of minMantissa (M) and the values of base (b) and precision (p) are related by the formula: M = -(bp - 1).
Reference to one in a list of enumerated elements that indicates whether data (e.g. variable or parameter) can be changed.
A negative change limit between consecutive sample values for a parameter. The Negative Delta may be the encoded value or engineering units value depending on whether or not a Calibrator is defined.
Provides a way to reference information that is an authorative source providing a standard definition
OLE DB (Object Linking and Embedding, Database, sometimes written as OLEDB or OLE-DB), an API designed by Microsoft, allows accessing data from a variety of sources in a uniform manner. The API provides a set of interfaces implemented using the Component Object Model (COM); it is otherwise unrelated to OLE.
This property identifies the mathematical comparison operator (such as "<" or ">") that is used to order the elements of a collection.
A pattern is a constraint on the value space of a datatype which is achieved by constraining the lexical space to literals which match a specific pattern. The value of pattern must be a regular expression.
A plain text description is used to provide a description with only simple ASCII characters for cases where LaTeX , HTML or other markup would not be appropriate.
A positive change limit between consecutive sample values for a parameter. The Positive Delta may be the encoded value or engineering units value depending on whether or not a Calibrator is defined.
Precision is the number of digits used to perform a given computation. The concepts of accuracy and precision are both closely related and often confused. While the accuracy of a number x is given by the number of significant decimal (or other) digits to the right of the decimal point in x, the precision of x is the total number of significant decimal (or other) digits. For a given numeric data type, the value of type:precision (?p) is related to the values of type:maxMantissa (?M) and type:base (?b) by the formula: ?p := log(?b, ?M) where log(a,y) = x iff y=a^x.
Associates a unit with the appropriate prefix, if any.
a property to relate an observable thing with a quantity (qud:Quantity)
The relative standard uncertainty of a measurement is the (absolute) standard uncertainty divided by the magnitude of the exact value.
This property is used for qudt:Discipline instances to identify the Unit instances that are used within a given discipline.
This property is used to state the return type of a function type.
This property relates a unit that is scaled to the base unit that its qudt:conversionMultiplier converts it to
The intended use of the sound property is to be associated with modal enumerations
The standard uncertainty of a quantity is the estimated standard deviation of the mean taken from a series of measurements.
A reference to the specification of the data type of a variable or constant.
ucumCode associates a QUDT unit with its UCUM code (case-sensitive). In SHACL the values are derived from specific ucum properties using 'sh:values'.
The UDUNITS package supports units of physical quantities. Its C library provides for arithmetic manipulation of units and for conversion of numeric values between compatible units. The package contains an extensive unit database, which is in XML format and user-extendable. The package also contains a command-line utility for investigating units and converting values.
The UN/CEFACT Recommendation 20 provides three character alphabetic and alphanumeric codes for representing units of measurement for length, area, volume/capacity, mass (weight), time, and other quantities used in international trade. The codes are intended for use in manual and/or automated systems for the exchange of information between participants in international trade.
A property to relate an observable thing with a value expressed as a decimal
A property to relate an observable thing with a value expressed in scientific notation
A list of the values of elements in a Partial Array.
The definition of the X-Axis could be an intersection, cross-product or other function of a meridian or orbit. It could also mention any aspects of rotation, for example, the rotation equator of the Earth, Sun, Moon or other celestial body. An epoch might also be given.
The definition of the Y-Axis could be an intersection, cross-product or other function of a meridian or orbit. It could also mention any aspects of rotation, for example, the rotation equator of the Earth, Sun, Moon or other celestial body. An epoch might also be given.
The definition of the Y-Axis could be an intersection, croos-product or other function of a meridian or orbit. It could also mention any aspects of rotation, for example, the rotation equator of the Earth, Sun, Moon or other celestial body. An epoch might also be given.
Alpha particle-electron mass ratio
Alpha particle mass
alpha particle mass energy equivalent
Alpha particle mass energy equivalent in Me V
alpha particle mass in atomic mass unit
alpha particle molar mass
alpha particle-proton mass ratio
Angstrom star
The $\textit{Atomic Mass Constant}$ is one twelfth of the mass of an unbound atom of carbon-12 at rest and in its ground state.
atomic mass constant
atomic mass constant energy equivalent
atomic mass constant energy equivalent in MeV
atomic mass unit-electron volt relationship
atomic mass unit-hartree relationship
atomic mass unit-hertz relationship
atomic mass unit-inverse meter relationship
atomic mass unit-inverse metre relationship
atomic mass unit-joule relationship
atomic mass unit-kelvin relationship
atomic mass unit-kilogram relationship
atomic unit of 1st hyperpolarizablity
atomic unit of 2nd hyperpolarizablity
atomic unit of action
atomic unit of charge
atomic unit of charge density
atomic unit of current
atomic unit of electric dipole mom.
atomic unit of electric field
atomic unit of electric field gradient
atomic unit of electric polarizablity
atomic unit of electric potential
atomic unit of electric quadrupole moment
atomic unit of energy
atomic unit of force
atomic unit of length
atomic unit of magnetic dipole moment
atomic unit of magnetic flux density
atomic unit of magnetizability
atomic unit of mass
atomic unit of momentum
atomic unit of permittivity
atomic unit of time
atomic unit of velocity
The $\textit{Avogadro Constant}$ is defined as the ratio of the number of constituent particles N in a sample to the amount of substance $n$ through the relationship $NA = N/n$. Thus, it is the proportionality factor that relates the molar mass of an entity, that is, the mass per amount of substance, to the mass of said entity.
$L = \frac{N}{n}$, where $N$ is the number of particles and $n$ is amount of substance.
Avogadro constant
The $\textit{Bohr Magneton}$ is a physical constant and the natural unit for expressing an electron magnetic dipole moment.
$\mu_B = \frac{e\hbar}{2m_e}$, where $e$ is the elementary charge, $\hbar$ is the Planck constant, and $m_e$ is the rest mass of electron.
Bohr Magneton
Bohr magneton in eV per T
Bohr magneton in Hz perT
Bohr magneton in inverse meters per tesla
Bohr magneton in inverse metres per tesla
Bohr magneton in K per T
The $\textit{Bohr Radius}$ is a physical constant, approximately equal to the most probable distance between the proton and electron in a hydrogen atom in its ground state. It is named after Niels Bohr, due to its role in the Bohr model of an atom. The precise definition of the Bohr radius is: $$a_0 = \frac{4\pi \epsilon_0 \hbar^2}{me^2}$$ Where, $a_0$ is the Bohr radius, $\epsilon_0$ is the permittivity of a vacuum, $m_e$ is the mass of an electron, $\hbar$ is the reduced Planck's constant, $e$ is the elementary charge. When rearranged to highlight the role of the Coulomb constant and the elementary charge, the formula can be shown as: $$a_0 \equiv \frac{{\hbar ^2 }}{{m_e ke^2 }}$$ Where, $a_0$ is the Bohr radius, $m_e$ is the mass of an electron, $\hbar$ is the reduced Planck's constant, $k$ is the Coulomb Constant, $e$ is the elementary charge.
$a_0 = \frac{4\pi \varepsilon_0 \hbar^2}{m_ee^2}$, where $\varepsilon_0$ is the electric constant, $\hbar$ is the reduced Planck constant, $m_e$ is the rest mass of electron, and $e$ is the elementary charge.
Bohr Radius
The $\textit{Boltzmann Constant}$, symbol $k$ or $kB$, is the physical constant relating energy at the individual particle level with temperature, which must necessarily be observed at the collective or bulk level. It is the gas constant $R$ divided by the Avogadro constant $N_A$, having the same dimension as entropy. It is named after the Austrian physicist Ludwig Boltzmann.
Boltzmann Constant
Boltzmann constant in eV per K
Boltzmann constant in Hz per K
Boltzmann constant in inverse meters per kelvin
Boltzmann constant in inverse metres per kelvin
The constant $\textit{Characteristic Impedance of Vacuum}$, symbol $Z0$ is the impedance of free space. This is a physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space. That is, $Z0 = |E|/|H|$, where $|E|$ is the electric field strength and $|H|$ magnetic field strength. It has an exact value, given approximately as 376.73031 ohms. The impedance of free space equals the product of the vacuum permeability or magnetic constant $μ0$ and the speed of light in vacuum $c0$. Since the numerical values of the magnetic constant and of the speed of light are fixed by the definitions of the ampere and the metre respectively, the exact value of the impedance of free space is likewise fixed by definition and is not subject to experimental error.
characteristic impedance of vacuum
classical electron radius
The constant $\textit{Compton Wavelength}$ is a quantum mechanical property of a particle. It was introduced by Arthur Compton in his explanation of the scattering of photons by electrons. The process is known as Compton scattering. The Compton Wavelength of a particle is equivalent to the wavelength of a photon whose energy is the same as the rest-mass energy of the particle.
$\lambda_C = \frac{h}{mc_0}$, where $h$ is the Planck constant, $m$ is the rest mass of a particle, and $c_0$ is the speed of light in vacuum.
Compton Wavelength
Compton wavelength over 2 pi
conductance quantum
conventional value of Josephson constant
conventional value of von Klitzing constant
Cu x unit
deuteron-electron magnetic moment ratio
deuteron-electron mass ratio
deuteron g factor
deuteron magnetic moment
deuteron magnetic moment to Bohr magneton ratio
deuteron magnetic moment to nuclear magneton ratio
deuteron mass
deuteron mass energy equivalent
deuteron mass energy equivalent in MeV
deuteron mass in atomic mass unit
deuteron molar mass
deuteron-neutron magnetic moment ratio
deuteron-proton magnetic moment ratio
deuteron-proton mass ratio
deuteron rms charge radius
electric constant
The $\textit{Permeability of Vacuum}$, also known as $\textit{Magnetic Constant}$, is a scalar constant $\mu_0$ such that, in a vacuum the product with the magnetic field vector, $\overrightarrow{H}$ is equal to the magnetic flux density vector, $\overrightarrow{B}$.
$\mu_0 = \frac{\overrightarrow{B}}{\overrightarrow{H}}$, where $\overrightarrow{B}$ is the B-Filed magnetic vector, and $\overrightarrow{H}$ is the H-Field magnetic vector. The value of $\mu_0$ is $\approx 1.256637e-6\,henry\,per\,metre$.
Permeability of Vacuum
electron charge to mass quotient
electron-deuteron magnetic moment ratio
electron-deuteron mass ratio
electron g factor
The $\textit{Electron Gyromagnetic Ratio}$ is a property that an isolated electron has for its angular momentum and magnetic moment resulting from its spin. While an electron's spin is sometimes visualized as a literal rotation about an axis, it is in fact a fundamentally different, quantum-mechanical phenomenon with no true analogue in classical physics. As a consequence there is no reason to expect the above classical relation to hold.
$\mu = \gamma_e J$, where $\mu$ is the magnetic dipole moment, and $J$ is the total angular momentum.
Electron Gyromagnetic Ratio
electron gyromagnetic ratio over 2 pi
electron magnetic moment
electron magnetic moment anomaly
electron magnetic moment to Bohr magneton ratio
electron magnetic moment to nuclear magneton ratio
Electron Mass
electron mass energy equivalent
electron mass energy equivalent in MeV
electron mass in atomic mass unit
electron molar mass
electron-muon magnetic moment ratio
electron-muon mass ratio
electron-neutron magnetic moment ratio
electron-neutron mass ratio
electron-proton magnetic moment ratio
electron-proton mass ratio
electron-tau mass ratio
electron to alpha particle mass ratio
electron to shielded helion magnetic moment ratio
electron to shielded proton magnetic moment ratio
electron volt-atomic mass unit relationship
electron volt-hartree relationship
electron volt-hertz relationship
electron volt-inverse meter relationship
electron volt-inverse metre relationship
electron volt-joule relationship
electron volt-kelvin relationship
electron volt-kilogram relationship
The "Elementary Charge" is the electric charge carried by a single proton, or equivalently, the negation (opposite) of the electric charge carried by a single electron.
Elementary Charge
elementary charge over h
The $\textit{Faraday Constant}$ is a constant equal to the product of electrical elementary charge and Avogadro constant; this is approximately $9.64853321233100184 \times 10^{4}\ C/mol$.
$F = N_A e$, where $N_A$ is the Avogadro constant and $e$ is the elementary charge.
Physikalische Konstante, gleich dem Produkt aus elektrischer Elementarladung und Avogadro-Konstante; sie beträgt annähernd 96 485,3 C/mol
Faraday constant
Fermi coupling constant
The $\textit{Fine-structure Constant}$ is a fundamental physical constant, namely the coupling constant characterizing the strength of the electromagnetic interaction.
$a = \frac{e^2}{4\pi\varepsilon_0\hbar c_0}$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, item $\hbar$ is the reduced Planck constant, and $c_0$ is the speed of light in vacuum.
Fine-Structure Constant
The constant $\textit{First Radiation Constant}$ is defined in Planck's radiation law about the dependence of the spectral density of various radiation variables on the wavelength of the electromagnetic radiation and the absolute temperature of the black emitter. This is composed of the product of twice $Pi$ times Planck's quantum of action multiplied by the square of the velocity of light.
Konstante im Planckschen Strahlungsgesetz über die Abhängigkeit der spektralen Dichte verschiedener Strahlungsgrößen von der Wellenlänge der elektromagnetischen Strahlung und der absoluten Temperatur beim schwarzen Strahler, welche sich zusammensetzt aus dem Produkt zwei Pi mal Plancksches Wirkungsquantum mal dem Quadrat der Lichtgeschwindigkeit
first radiation constant
first radiation constant for spectral radiance
The $\textit{Gravitational Constant}$ (also known as the universal gravitational constant, is the Newtonian constant of gravitation, or the Cavendish gravitational constant). Denoted by the letter $G$, it is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity.
Empirisch ermittelte Naturkonstante, die bei bekanntem Mittelpunktsabstand zweier kugelsymmetrischer Körper deren gegenseitige Massenanziehungskraft bestimmt
Gravitational constant
hartree-atomic mass unit relationship
hartree-electron volt relationship
The constant $\textit{Hartree Energy}$ (symbol: $E_h$ or $Ha$), also known as the $\textit{Hartree}$, is the atomic unit of energy. The hartree energy is equal to the absolute value of the electric potential energy of the hydrogen atom in its ground state. The energy of the electron in an H-atom in its ground state is $-E_H$, where $E_H= 2 R_\infty \cdot hc_0$. The 2006 CODATA recommended value was $E_H = 4.35974394(22)\ \times 10^{-18}\ J = 27.21138386(68)\ eV$.
$E_H= \frac{e^2}{4\pi \varepsilon_0 a_0 }$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, and $a_0$ is the Bohr radius.
Hartree Energy
Hartree energy in eV
hartree-hertz relationship
hartree-inverse meter relationship
hartree-inverse metre relationship
hartree-joule relationship
hartree-kelvin relationship
hartree-kilogram relationship
helion-electron mass ratio
helion mass
helion mass energy equivalent
helion mass energy equivalent in MeV
helion mass in atomic mass unit
helion molar mass
helion-proton mass ratio
hertz-atomic mass unit relationship
hertz-electron volt relationship
hertz-hartree relationship
hertz-inverse meter relationship
hertz-inverse metre relationship
hertz-joule relationship
hertz-kelvin relationship
hertz-kilogram relationship
inverse fine-structure constant
inverse meter-atomic mass unit relationship
inverse metre-atomic mass unit relationship
inverse meter-electron volt relationship
inverse metre-electron volt relationship
inverse meter-hartree relationship
inverse metre-hartree relationship
inverse meter-hertz relationship
inverse metre-hertz relationship
inverse meter-joule relationship
inverse metre-joule relationship
inverse meter-kelvin relationship
inverse metre-kelvin relationship
inverse meter-kilogram relationship
inverse metre-kilogram relationship
inverse of conductance quantum
The constant $\textit{Josephson Constant}$ is a proportionality factor between voltage and frequency of an alternating current corresponding to the product of two elementary charges $e$ and Planck's action quantum $h$.
$K_J = \frac{1}{\Phi_0}$, where $\Phi_0$ is the magnetic flux quantum.
Proportionalitätsfaktor zwischen elektrischer Spannung und Frequenz beim Wechselstrom entsprechend dem Produkt aus zwei Elementarladungen e und Planckschen Wirkungsquantum h
Josephson Constant
joule-atomic mass unit relationship
joule-electron volt relationship
joule-hartree relationship
joule-hertz relationship
joule-inverse meter relationship
joule-inverse metre relationship
joule-kelvin relationship
joule-kilogram relationship
kelvin-atomic mass unit relationship
kelvin-electron volt relationship
kelvin-hartree relationship
kelvin-hertz relationship
kelvin-inverse meter relationship
kelvin-inverse metre relationship
kelvin-joule relationship
kelvin-kilogram relationship
kilogram-atomic mass unit relationship
kilogram-electron volt relationship
kilogram-hartree relationship
kilogram-hertz relationship
kilogram-inverse meter relationship
kilogram-inverse metre relationship
Kilogram-Joule Relationship
kilogram-kelvin relationship
lattice parameter of silicon
lattice parametre of silicon
lattice spacing of silicon
Loschmidt constant 273.15 K 101.325 kPa
The constant $\textit{Magentic Constant}$, also known as $\textit{Permeability of Vacuum}$, is a scalar constant $\mu_0$ such that, in a vacuum the product with the magnetic field vector, $\overrightarrow{H}$ is equal to the magnetic flux density vector, $\overrightarrow{B}$.
$\mu_0 = \frac{\overrightarrow{B}}{\overrightarrow{H}}$, where $\overrightarrow{B}$ is the B-Filed magnetic vector, and $\overrightarrow{H}$ is the H-Filed magnetic vector. The value of $\mu_0$ is $\approx 1.256637e-6\,H/M$.
Magnetic Constant
The constant $\textit{Magnetic Flux Quantum}$ is the quantum of magnetic flux passing through a superconductor.
$\Phi_0 = \frac{h}{2e}$, where $h$ is the Planck constant and $e$ is the elementary charge.
magnetic flux quantum
Mo x unit
The constant $\textit{Molar Gas Constant}$, also known as the gas constant, universal, or ideal gas constant, denoted by the symbol $R$, is a physical constant which is featured in many fundamental equations in the physical sciences, such as the ideal gas law and the Nernst equation. It is equivalent to the Boltzmann constant, but expressed in units of energy (i.e. the pressure-volume product) per temperature increment per mole (rather than energy per temperature increment per particle).
$pV_m = RT$, where $p$ is pressure, $V_m$ is molar volume, and $T$ is thermodynamic temperature.
molar gas constant
molar mass constant
molar mass of carbon-12
molar Planck constant
molar Planck constant times c
molar volume of ideal gas 273.15 K 100 kPa
molar volume of ideal gas 273.15 K 101.325 kPa
molar volume of silicon
muon Compton wavelength
muon Compton wavelength over 2 pi
muon-electron mass ratio
muon g factor
muon magnetic moment
muon magnetic moment anomaly
muon magnetic moment to Bohr magneton ratio
muon magnetic moment to nuclear magneton ratio
muon mass
muon mass energy equivalent
muon mass energy equivalent in MeV
muon mass in atomic mass unit
muon molar mass
muon-neutron mass ratio
muon-proton magnetic moment ratio
muon-proton mass ratio
muon-tau mass ratio
natural unit of action
natural unit of action in eV s
natural unit of energy
natural unit of energy in MeV
natural unit of length
natural unit of mass
natural unit of momentum
natural unit of momentum in MeV PER c
natural unit of time
natural unit of velocity
neutron Compton wavelength
neutron Compton wavelength over 2 pi
neutron-electron magnetic moment ratio
neutron-electron mass ratio
neutron g factor
neutron gyromagnetic ratio
neutron gyromagnetic ratio over 2 pi
neutron magnetic moment
neutron magnetic moment to Bohr magneton ratio
neutron magnetic moment to nuclear magneton ratio
neutron mass
neutron mass energy equivalent
neutron mass energy equivalent in MeV
neutron mass in atomic mass unit
neutron molar mass
neutron-muon mass ratio
neutron-proton magnetic moment ratio
neutron-proton mass ratio
neutron-tau mass ratio
neutron to shielded proton magnetic moment ratio
Newtonian constant of gravitation
The constant $\textit{Nuclear Magneton}$ is the natural unit for expressing magnetic dipole moments of heavy particles such as nucleons and atomic nuclei.
$\mu_N = \frac{e\hbar}{2m_p}$, where $e$ is the elementary charge, $\hbar$ is the Planck constant, and $m_p$ is the rest mass of proton.
Nuclear Magneton
nuclear magneton in eV per T
nuclear magneton in inverse meters per tesla
nuclear magneton in inverse metres per tesla
nuclear magneton in K per T
nuclear magneton in MHz per T
The constant $\textit{Permittivity of Vacuum}$, also known as the $\textit{electric constant}$ is a constant whose value is $\approx\,6.854188e-12\, farad\,per\,metre$. Sometimes also referred to as the $\textit{Permittivity of Free Space}$.
$\epsilon = \frac{\mathbf{D}}{\mathbf{E}}$, where $\mathbf{D}$ is electric flux density and $\mathbf{E}$ is electric field strength.
Permittivity of Vacuum
The constant $\pi$ is the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159.
$\pi = \frac{C}{d}$, where $C$ is the circumference of a circle and $d$ is the diameter of a circle.
The constant $\textit{Planck Constant}$ is a physical constant that is the quantum of action in quantum mechanics. The Planck constant was first described as the proportionality constant between the energy ($E$) of a photon and the frequency ($\nu$) of its associated electromagnetic wave.
$E = h\nu = \frac{hc}{\lambda}$, where $E$ is energy, $\nu$ is frequency, $\lambda$ is wavelength, and $c$ is the speed of light.
Planck Constant
Planck constant in eV s
Planck constant over 2 pi
Planck constant over 2 pi in eV s
Planck constant over 2 pi times c in MeV fm
Planck length
Planck mass
Planck mass energy equivalent in GeV
Planck temperature
Planck time
proton charge to mass quotient
proton Compton wavelength
proton Compton wavelength over 2 pi
proton-electron mass ratio
proton g factor
proton gyromagnetic ratio
proton gyromagnetic ratio over 2 pi
proton magnetic moment
proton magnetic moment to Bohr magneton ratio
proton magnetic moment to nuclear magneton ratio
proton mag. shielding correction
proton mass
proton mass energy equivalent
proton mass energy equivalent in MeV
proton mass in atomic mass unit
proton molar mass
proton-muon mass ratio
proton-neutron magnetic moment ratio
proton-neutron mass ratio
proton rms charge radius
proton-tau mass ratio
quantum of circulation
quantum of circulation times 2
The $\textit{Reduced Planck Constant}$, or $\textit{Dirac Constant}$, is used in applications where frequency is expressed in terms of radians per second ($\textit{angular frequency}$) instead of cycles per second. In such cases a factor of $\pi$ is absorbed into the constant.
$\hbar = \frac{h}{2\pi}$, where $h$ is the Planck constant.
Reduced Planck Constant
The $\textit{Rydberg constant}$, named after the Swedish physicist Johannes Rydberg, is a physical constant relating to atomic spectra, in the science of spectroscopy.
$R_\infty = \frac{e^2}{8\pi \varepsilon_0 a_0 h c_0 }$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, $a_0$ is the Bohr radius, $h$ is the Planck constant, and $c_0$ is the speed of light in vacuum.
Rydberg Constant
Rydberg constant times c in Hz
Rydberg constant times hc in eV
Rydberg constant times hc in J
Sackur-Tetrode constant 1 K 100 kPa
Sackur-Tetrode constant 1 K 101.325 kPa
second radiation constant
shielded helion gyromagnetic ratio
shielded helion gyromagnetic ratio over 2 pi
shielded helion magnetic moment
shielded helion magnetic moment to Bohr magneton ratio
shielded helion magnetic moment to nuclear magneton ratio
shielded helion to proton magnetic moment ratio
shielded helion to shielded proton magnetic moment ratio
shielded proton gyromagnetic ratio
shielded proton gyromagnetic ratio over 2 pi
shielded proton magnetic moment
shielded proton magnetic moment to Bohr magneton ratio
shielded proton magnetic moment to nuclear magneton ratio
The $\textit{Speed of Light in Vacuum}$, is a universal physical constant important in many areas of physics. Its value is 299,792,458 metres per second, a figure that is exact because the length of the metre is defined from this constant and the international standard for time.
$c_0 = 1 / \sqrt{\epsilon_0 \mu_0}$, where {\epsilon_0} is the permittivity of vacuum, and $\mu_0$ is the magnetic constant.
Speed of Light (vacuum)
standard acceleration of gravity
standard atmosphere
The $\textit{Stefan Boltzmann Constant}$ is a proportionality factor between the specific radiant heat of a black body and the 4th power of its absolute temperature.
Proportionalitätsfaktor zwischen der spezifischen Strahlungswärme eines schwarzen Strahlers und seiner absoluten Temperatur in der 4. Potenz
Stefan-Boltzmann Constant
tau Compton wavelength
tau Compton wavelength over 2 pi
tau-electron mass ratio
tau mass
tau mass energy equivalent
tau mass energy equivalent in MeV
tau mass in atomic mass unit
tau molar mass
tau-muon mass ratio
tau-neutron mass ratio
tau-proton mass ratio
Thomson cross section
triton-electron magnetic moment ratio
triton-electron mass ratio
triton g factor
triton magnetic moment
triton magnetic moment to Bohr magneton ratio
triton magnetic moment to nuclear magneton ratio
triton mass
triton mass energy equivalent
triton mass energy equivalent in MeV
triton mass in atomic mass unit
triton molar mass
triton-neutron magnetic moment ratio
triton-proton magnetic moment ratio
triton-proton mass ratio
unified atomic mass unit
The gas constant (also known as the molar, universal, or ideal gas constant) is a physical constant which is featured in many fundamental equations in the physical sciences, such as the ideal gas law and the Nernst equation. Physically, the gas constant is the constant of proportionality that happens to relate the energy scale in physics to the temperature scale, when a mole of particles at the stated temperature is being considered.
Universal Gas Constant
Value for alpha particle-electron mass ratio
Value for alpha particle mass energy equivalent
Value for alpha particle mass energy equivalent in MeV
Value for alpha particle mass in atomic mass unit
Value for alpha particle-proton mass ratio
Value for atomic mass constant energy equivalent
Value for atomic mass constant energy equivalent in MeV
Value for atomic mass unit-electron volt relationship
Value for atomic mass unit-hartree relationship
Value for atomic mass unit-hertz relationship
Value for atomic mass unit-inverse meter relationship
Value for atomic mass unit-joule relationship
Value for atomic mass unit-kelvin relationship
Value for atomic mass unit-kilogram relationship
Value for atomic unit of 1st hyperpolarizability
Value for atomic unit of 2nd hyperpolarizability
Value for atomic unit of electric dipole mom.
Value for atomic unit of electric field gradient
Value for atomic unit of electric polarizability
Value for atomic unit of electric potential
Value for atomic unit of electric quadrupole moment
Value for atomic unit of magnetic dipole moment
Value for atomic unit of magnetic flux density
Value for atomic unit of magnetizability
Value for Bohr magneton in inverse meters per tesla
Value for Boltzmann constant in eV per K
Value for Boltzmann constant in Hz per K
Value for Boltzmann constant in inverse meters per kelvin
Value for characteristic impedance of vacuum
Value for conventional value of Josephson constant
Value for conventional value of von Klitzing constant
Value for deuteron-electron magnetic moment ratio
Value for deuteron magnetic moment to Bohr magneton ratio
Value for deuteron magnetic moment to nuclear magneton ratio
Value for deuteron mass energy equivalent
Value for deuteron mass energy equivalent in MeV
Value for deuteron-neutron magnetic moment ratio
Value for deuteron-proton magnetic moment ratio
Value for electron charge to mass quotient
Value for electron-deuteron magnetic moment ratio
Value for electron gyromagnetic ratio over 2 pi
Value for electron magnetic moment anomaly
Value for electron magnetic moment to Bohr magneton ratio
Value for electron magnetic moment to nuclear magneton ratio
Value for electron mass energy equivalent
Value for electron mass energy equivalent in MeV
Value for electron-muon magnetic moment ratio
Value for electron-neutron magnetic moment ratio
Value for electron-proton magnetic moment ratio
Value for electron to alpha particle mass ratio
Value for electron to shielded helion magnetic moment ratio
Value for electron to shielded proton magnetic moment ratio
Value for electron volt-atomic mass unit relationship
Value for electron volt-hartree relationship
Value for electron volt-hertz relationship
Value for electron volt-inverse meter relationship
Value for electron volt-joule relationship
Value for electron volt-kelvin relationship
Value for electron volt-kilogram relationship
Faraday constant for conventional electric current
Value for first radiation constant for spectral radiance
Value for hartree-atomic mass unit relationship
Value for hartree-electron volt relationship
Value for hartree-inverse meter relationship
Value for helion mass energy equivalent in MeV
Value for hertz-atomic mass unit relationship
Value for hertz-electron volt relationship
Value for hertz-inverse meter relationship
Value for inverse fine-structure constant
Value for inverse meter-atomic mass unit relationship
Value for inverse meter-electron volt relationship
Value for inverse meter-hartree relationship
Value for inverse meter-hertz relationship
Value for inverse meter-joule relationship
Value for inverse meter-kelvin relationship
Value for inverse meter-kilogram relationship
Value for inverse of conductance quantum
Value for joule-atomic mass unit relationship
Value for joule-electron volt relationship
Value for joule-inverse meter relationship
Value for kelvin-atomic mass unit relationship
Value for kelvin-electron volt relationship
Value for kelvin-inverse meter relationship
Value for kilogram-atomic mass unit relationship
Value for kilogram-electron volt relationship
Value for kilogram-inverse meter relationship
Value for Loschmidt constant 273.15 K 101.325 kPa
Value for molar volume of ideal gas 273.15 K 101.325 kPa
Value for muon Compton wavelength over 2 pi
Value for muon magnetic moment to Bohr magneton ratio
Value for muon magnetic moment to nuclear magneton ratio
Value for muon mass energy equivalent in MeV
Value for muon-proton magnetic moment ratio
Value for natural unit of action in eV s
Value for natural unit of momentum in MeV c^-1
Value for neutron Compton wavelength over 2 pi
Value for neutron-electron magnetic moment ratio
Value for neutron gyromagnetic ratio over 2 pi
Value for neutron magnetic moment to Bohr magneton ratio
Value for neutron magnetic moment to nuclear magneton ratio
Value for neutron mass energy equivalent
Value for neutron mass energy equivalent in MeV
Value for neutron-proton magnetic moment ratio
Value for neutron to shielded proton magnetic moment ratio
Value for Newtonian constant of gravitation
Newtonian constant of gravitation over hbar c
Value for nuclear magneton in inverse meters per tesla
Value for Planck constant over 2 pi in eV s
Value for Planck constant over 2 pi times c in MeV fm
Value for Planck mass energy equivalent in GeV
Value for proton charge to mass quotient
Value for proton Compton wavelength over 2 pi
Value for proton gyromagnetic ratio over 2 pi
Value for proton magnetic moment to Bohr magneton ratio
Value for proton magnetic moment to nuclear magneton ratio
Value for proton magnetic shielding correction
Value for proton mass energy equivalent in MeV
Value for proton-neutron magnetic moment ratio
Value for quantum of circulation times 2
Value for Rydberg constant times c in Hz
Value for Rydberg constant times hc in eV
Value for Rydberg constant times hc in J
Value for Sackur-Tetrode constant 1 K 100 kPa
Value for Sackur-Tetrode constant 1 K 101.325 kPa
Value for shielded helion gyromagnetic ratio
Value for shielded helion gyromagnetic ratio over 2 pi
Value for shielded helion magnetic moment
Value for shielded helion magnetic moment to Bohr magneton ratio
Value for shielded helion magnetic moment to nuclear magneton ratio
Value for shielded helion to proton magnetic moment ratio
Value for shielded helion to shielded proton magnetic moment ratio
Value for shielded proton gyromagnetic ratio
Value for shielded proton gyromagnetic ratio over 2 pi
Value for shielded proton magnetic moment
Value for shielded proton magnetic moment to Bohr magneton ratio
Value for shielded proton magnetic moment to nuclear magneton ratio
Value for speed of light in vacuum (Imperial units)
Value for standard acceleration of gravity
Value for tau Compton wavelength over 2 pi
Value for tau mass energy equivalent in MeV
Value for triton-electron magnetic moment ratio
Value for triton magnetic moment to Bohr magneton ratio
Value for triton magnetic moment to nuclear magneton ratio
Value for triton mass energy equivalent in MeV
Value for triton-neutron magnetic moment ratio
Value for triton-proton magnetic moment ratio
Value for Wien frequency displacement law constant
Value for Wien wavelength displacement law constant
Von Klitzing constant
Weak mixing angle
Wien frequency displacement law constant
Wien wavelength displacement law constant
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Saudi Riyal
Solomon Islands Dollar
Seychelles Rupee
Sudanese Pound
Swedish Krona
Singapore Dollar
Saint Helena Pound
Slovak Koruna
Leone
Somali Shilling
Surinam Dollar
Dobra
Syrian Pound
Lilangeni
Baht
Somoni
Manat
Tunisian Dinar
Pa'anga
New Turkish Lira
Trinidad and Tobago Dollar
New Taiwan Dollar
Tanzanian Shilling
Hryvnia
Uganda Shilling
US Dollar
United States Dollar (next day) (funds code)
United States Dollar (same day) (funds code)
Peso Uruguayo
Uzbekistan Som
Venezuelan bolvar
Vietnamese ??ng
Vatu
Samoan Tala
CFA Franc BEAC
Silver (one Troy ounce)
Gold (one Troy ounce)
European Composite Unit (EURCO) (Bonds market unit)
European Monetary Unit (E.M.U.-6) (Bonds market unit)
European Unit of Account 9 (E.U.A.-9) (Bonds market unit)
European Unit of Account 17 (E.U.A.-17) (Bonds market unit)
East Caribbean Dollar
Special Drawing Rights
Gold franc (special settlement currency)
UIC franc (special settlement currency)
CFA Franc BCEAO
Palladium (one Troy ounce)
CFP franc
Platinum (one Troy ounce)
Yemeni Rial
South African Rand
Zambian Kwacha
Zimbabwe Dollar
"atto" is a decimal prefix for expressing a value with a scaling of \(10^{-18}\).
Atto
'centi' is a decimal prefix for expressing a value with a scaling of \(10^{-2}\).
Centi
Deca
"deci" is a decimal prefix for expressing a value with a scaling of \(10^{-1}\).
Deci
deka is a decimal prefix for expressing a value with a scaling of \(10^{1}\).
Deka
'exa' is a decimal prefix for expressing a value with a scaling of \(10^{18}\).
Exa
A binary prefix for expressing a value with a scaling of $1024^{6}$, or $2^{60}$.
Exbi
'femto' is a decimal prefix for expressing a value with a scaling of \(10^{-15}\).
Femto
A binary prefix for expressing a value with a scaling of $1024^{3}$, or $2^{30}$.
Gibi
'giga' is a decimal prefix for expressing a value with a scaling of \(10^{9}\).
Giga
'hecto' is a decimal prefix for expressing a value with a scaling of \(10^{2}\).
Hecto
A binary prefix for expressing a value with a scaling of $1024$, or $2^{10}$.
Kibi
"kilo" is a decimal prefix for expressing a value with a scaling of \(10^{3}"\).
Kilo
A binary prefix for expressing a value with a scaling of $1024^{2}$, or $2^{20}$.
Mebi
'mega' is a decimal prefix for expressing a value with a scaling of \(10^{6}\).
Mega
"micro" is a decimal prefix for expressing a value with a scaling of \(10^{-6}\).
Micro
'milli' is a decimal prefix for expressing a value with a scaling of \(10^{-3}\).
Milli
'nano' is a decimal prefix for expressing a value with a scaling of \(10^{-9}\).
Nano
A binary prefix for expressing a value with a scaling of $1024^{5}$, or $2^{50}$.
Pebi
'peta' is a decimal prefix for expressing a value with a scaling of \(10^{15}\).
Peta
'pico' is a decimal prefix for expressing a value with a scaling of \(10^{-12}\).
Pico
'quecto' is a decimal prefix for expressing a value with a scaling of \(10^{-30}\).
Quecto
'quetta' is a decimal prefix for expressing a value with a scaling of \(10^{30}\).
Quetta
'ronna' is a decimal prefix for expressing a value with a scaling of \(10^{27}\).
Ronna
'ronto' is a decimal prefix for expressing a value with a scaling of \(10^{-27}\).
Ronto
A binary prefix for expressing a value with a scaling of $1024^4}$, or $2^{40}$.
Tebi
'tera' is a decimal prefix for expressing a value with a scaling of \(10^{12}\).
Tera
A binary prefix for expressing a value with a scaling of $1024^{8}$, or $2^{80}$.
Yobi
'yocto' is a decimal prefix for expressing a value with a scaling of \(10^{-24}\).
Yocto
'yotta' is a decimal prefix for expressing a value with a scaling of \(10^{24}\).
Yotta
A binary prefix for expressing a value with a scaling of $1024^{7}$, or $2^{70}$.
Zebi
'zepto' is a decimal prefix for expressing a value with a scaling of \(10^{-21}\).
Zepto
'zetta' is a decimal prefix for expressing a value with a scaling of \(10^{21}\).
Zetta
$m^2 \cdot kg \cdot s^{-2} \cdot A^{-1}$
Suspicious. Electric Charge per Area would be ET/L**2
Permeability should be force/current**2, which is ML/T2E2. Permittivity should be T4E2L-3M-1
This is a placeholder dimension vector used in cases where there is no appropriate dimension vector
The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of a petroleum liquid's density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity. Although API gravity is mathematically a dimensionless quantity (see the formula below), it is referred to as being in 'degrees'. API gravity is graduated in degrees on a hydrometer instrument. API gravity values of most petroleum liquids fall between 10 and 70 degrees.
Applicable units are those of quantitykind:APIGravity
API Gravity
The "Absolute Activity" is the exponential of the ratio of the chemical potential to $RT$ where $R$ is the gas constant and $T$ the thermodynamic temperature.
$\lambda_B = e^{\frac{\mu_B}{RT}}$, where $\mu_B$ is the chemical potential of substance $B$, $R$ is the molar gas constant, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:AbsoluteActivity
Absolute Activity
$\textit{Absolute Humidity}$ is an amount of water vapor, usually discussed per unit volume. Absolute humidity in air ranges from zero to roughly 30 grams per cubic meter when the air is saturated at $30 ^\circ C$. The absolute humidity changes as air temperature or pressure changes. $$$$ This is very inconvenient for chemical engineering calculations, e.g. for clothes dryers, where temperature can vary considerably. As a result, absolute humidity is generally defined in chemical engineering as mass of water vapor per unit mass of dry air, also known as the mass mixing ratio, which is much more rigorous for heat and mass balance calculations. $$$$ Mass of water per unit volume as in the equation above would then be defined as volumetric humidity, because of the potential confusion.
$AH = \frac{\mathcal{M}_\omega}{\vee_{net}}$, where $\mathcal{M}_\omega$ is the mass of water vapor per unit volume of total air and $\vee_{net}$ is water vapor mixture.
Applicable units are those of quantitykind:Density
Absolute Humidity
Applicable units are those of quantitykind:Length
"Absorbed Dose" (also known as Total Ionizing Dose, TID) is a measure of the energy deposited in a medium by ionizing radiation. It is equal to the energy deposited per unit mass of medium, and so has the unit $J/kg$, which is given the special name Gray ($Gy$).
$D = \frac{d\bar{\varepsilon}}{dm}$, where $d\bar{\varepsilon}$ is the mean energy imparted by ionizing radiation to an element of irradiated matter with the mass $dm$.
Applicable units are those of quantitykind:AbsorbedDose
Note that the absorbed dose is not a good indicator of the likely biological effect. 1 Gy of alpha radiation would be much more biologically damaging than 1 Gy of photon radiation for example. Appropriate weighting factors can be applied reflecting the different relative biological effects to find the equivalent dose. The risk of stoctic effects due to radiation exposure can be quantified using the effective dose, which is a weighted average of the equivalent dose to each organ depending upon its radiosensitivity. When ionising radiation is used to treat cancer, the doctor will usually prescribe the radiotherapy treatment in Gy. When risk from ionising radiation is being discussed, a related unit, the Sievert is used.
Absorbed Dose
"Absorbed Dose Rate" is the absorbed dose of ionizing radiation imparted at a given location per unit of time (second, minute, hour, or day).
$\dot{D} = \frac{dD}{dt}$, where $dD$ is the increment of absorbed dose during time interval with duration $dt$.
Applicable units are those of quantitykind:AbsorbedDoseRate
Absorbed Dose Rate
Absorptance is the ratio of the radiation absorbed by a surface to that incident upon it. Also known as absorbance.
$\alpha = \frac{\Phi_a}{\Phi_m}$, where $\Phi_a$ is the absorbed radiant flux or the absorbed luminous flux, and $\Phi_m$ is the radiant flux or luminous flux of the incident radiation.
Applicable units are those of quantitykind:Absorptance
Absorptance
$\textit{Acceleration}$ is the (instantaneous) rate of change of velocity. Acceleration may be either linear acceleration, or angular acceleration. It is a vector quantity with dimension $length/time^{2}$ for linear acceleration, or in the case of angular acceleration, with dimension $angle/time^{2}$. $$$$ In SI units, linear acceleration is measured in $meters/second^{2}$ ($m \cdot s^{-2}$), and angular acceleration is measured in $radians/second^{2}$. $$$$ In physics, any increase or decrease in speed is referred to as acceleration and similarly, motion in a circle at constant speed is also an acceleration, since the direction component of the velocity is changing.
Applicable units are those of quantitykind:Acceleration
Beschleunigung
Pecutan
Zrychlení
acceleratio
acceleration
accelerazione
accelerație
accélération
aceleración
aceleração
ivme
pospešek
przyspieszenie
Όγκος
Ускоре́ние
التسارع
شتاب
त्वरण
加速度
The acceleration of freely falling bodies under the influence of terrestrial gravity, equal to approximately 9.81 meters (32 feet) per second per second.
Acceleration Of Gravity
"Acceptor Density" is the number per volume of acceptor levels.
Applicable units are those of quantitykind:NumberDensity
Acceptor Density
"Acceptor Ionization Energy" is the ionization energy of an acceptor.
Applicable units are those of quantitykind:Energy
Acceptor Ionization Energy
Chemicals or substances having a pH less than 7 are said to be acidic; lower pH means higher acidity.
Applicable units are those of quantitykind:Acidity
Acidity
$\textit{Acoustic Impedance}$ at a surface is the complex quotient of the average sound pressure over that surface by the sound volume flow rate through that surface.
$Z_a= \frac{p}{q} = \frac{p}{vS}$, where $p$ is the sound pressure, $q$ is the sound volume velocity, $v$ is sound particle velocity, and $S$ is the surface area through which an acoustic wave of frequence $f$ propagates.
Acoustic impedance at a surface is the complex quotient of the average sound pressure over that surface by the sound volume flow rate through that surface.
Applicable units are those of quantitykind:AcousticImpedance
Acoustic Impediance
An action is usually an integral over time. But for action pertaining to fields, it may be integrated over spatial variables as well. In some cases, the action is integrated along the path followed by the physical system. $$$$ The evolution of a physical system between two states is determined by requiring the action be minimized or, more generally, be stationary for small perturbations about the true evolution. This requirement leads to differential equations that describe the true evolution. Conversely, an action principle is a method for reformulating differential equations of motion for a physical system as an equivalent integral equation. Although several variants have been defined (see below), the most commonly used action principle is Hamilton's principle.
$S = \int Ldt$, where $L$ is the Lagrange function and $t$ is time.
An action is usually an integral over time. But for action pertaining to fields, it may be integrated over spatial variables as well. In some cases, the action is integrated along the path followed by the physical system. If the action is represented as an integral over time, taken a the path of the system between the initial time and the final time of the development of the system. The evolution of a physical system between two states is determined by requiring the action be minimized or, more generally, be stationary for small perturbations about the true evolution. This requirement leads to differential equations that describe the true evolution. Conversely, an action principle is a method for reformulating differential equations of motion for a physical system as an equivalent integral equation. Although several variants have been defined (see below), the most commonly used action principle is Hamilton's principle.
Applicable units are those of quantitykind:Action
Action
Applicable units are those of quantitykind:Time
Action Time
$\textit{Active Energy}$ is the electrical energy transformable into some other form of energy.
$W = \int_{t_1}^{t_2} p dt$, where $p$ is instantaneous power and the integral interval is the time interval from $t_1$ to $t_2$.
"Active Energy" is the electrical energy transformable into some other form of energy.
Active Energy
An $Active Power$ is, under periodic conditions, the mean value, taken over one period $T$, of the instantaneous power $p$. In complex notation, $P = \mathbf{Re} \; \underline{S}$, where $\underline{S}$ is $\textit{complex power}$.
$P = \frac{1}{T}\int_{0}^{T} pdt$, where $T$ is the period and $p$ is instantaneous power.
Applicable units are those of quantitykind:ElectricPower
Active Power
$\textit{Activity}$ is the number of decays per unit time of a radioactive sample, the term used to characterise the number of nuclei which disintegrate in a radioactive substance per unit time. Activity is usually measured in Becquerels ($Bq$), where 1 $Bq$ is 1 disintegration per second, in honor of the scientist Henri Becquerel.
$A = Z + N$, where $Z$ is the atomic number and $N$ is the neutron number. Variation $dN$ of spontaneous number of nuclei $N$ in a particular energy state, in a sample of radionuclide, due to spontaneous nuclear transitions from this state during an infinitesimal time interval, divided by its duration $dt$, thus $A = -\frac{dN}{dt}$.
Applicable units are those of quantitykind:Activity
Activity
An "Activity Coefficient" is a factor used in thermodynamics to account for deviations from ideal behaviour in a mixture of chemical substances. In an ideal mixture, the interactions between each pair of chemical species are the same (or more formally, the enthalpy change of solution is zero) and, as a result, properties of the mixtures can be expressed directly in terms of simple concentrations or partial pressures of the substances present e.g. Raoult's law. Deviations from ideality are accommodated by modifying the concentration by an activity coefficient.
$f_B = \frac{\lambda_B}{(\lambda_B^*x_B)}$, where $\lambda_B$ the absolute activity of substance $B$, $\lambda_B^*$ is the absolute activity of the pure substance $B$ at the same temperature and pressure, and $x_B$ is the amount-of-substance fraction of substance $B$.
Applicable units are those of quantitykind:ActivityCoefficient
Activity Coefficient
The "Activity Concentration", also known as volume activity, and activity density, is .
$c_A = \frac{A}{V}$, where $A$ is the activity of a sample and $V$ is its volume.
Applicable units are those of quantitykind:ActivityConcentration
Activity Concentration
$\textit{Activity Related By Mass}$ is quantitative data of the radioactivity of the amount of a radionuclide in a particular state of energy at a defined point in time, divided by the related mass of this quantity.
quantitative Angabe der Radioaktivität einer Menge eines Radionuklids in einem bestimmten Energiezustand zu einem gegebenen Zeitpunkt dividiert durch die zugehörige Masse dieser Menge
quantitative data of the radioactivity of the amount of a radionuclide in a particular state of energy at a defined point in time, divided by the related mass of this quantity
Applicable units are those of quantitykind:MassicActivity
activity related by mass
"Activity Thresholds" are thresholds of sensitivity for radioactivity.
Activity Thresholds
"Adaptation" is the recovery of visual ability following exposure to light (dark adaptation), usually measured in units of time.
"Adaptation" is the recovery of visual ability following exposure to light (dark adaptation).
Adaptation
"Admittance" is a measure of how easily a circuit or device will allow a current to flow. It is defined as the inverse of the impedance ($Z$).
$Y = \frac{1}{Z}$, where $Z$ is impedance.
Applicable units are those of quantitykind:Admittance
Admittance
The "Alpha Disintegration Energy" is the sum of the kinetic energy of the $\alpha$-particle produced in the disintegration process and the recoil energy of the product atom in the reference frame in which the emitting nucleus is at rest before its disintegration.
The "Alpha Disintegration Energy" is the sum of the kinetic energy of the alpha-particle produced in the disintegration process and the recoil energy of the product atom in the reference frame in which the emitting nucleus is at rest before its disintegration.
Alpha Disintegration Energy
Altitude or height is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The reference datum also often varies according to the context. [Wikipedia]
Altitude
The ambient pressure on an object is the pressure of the surrounding medium, such as a gas or liquid, which comes into contact with the object. The SI unit of pressure is the pascal (Pa), which is a very small unit relative to atmospheric pressure on Earth, so kilopascals ($kPa$) are more commonly used in this context.
Applicable units are those of quantitykind:ForcePerArea
Ambient Pressure
The amount of the celestial dome covered by all clouds visible.
Applicable units are those of quantitykind:AmountOfCloudCover
Amount of cloud cover
$\textit{Amount of Substance}$ is a standards-defined quantity that measures the size of an ensemble of elementary entities, such as atoms, molecules, electrons, and other particles. It is sometimes referred to as chemical amount. The International System of Units (SI) defines the amount of substance to be proportional to the number of elementary entities present. The SI unit for amount of substance is mole. It has the unit symbol $mol$. The mole is defined as the amount of substance that contains an equal number of elementary entities as there are atoms in 0.012kg of the isotope carbon-12. This number is called Avogadro's number and has the value $6.02214179(30) \times 10^{23}$. The only other unit of amount of substance in current use is the $pound-mole$ with the symbol $lb-mol$, which is sometimes used in chemical engineering in the United States. One $pound-mole$ is exactly $453.59237 mol$.
Applicable units are those of quantitykind:AmountOfSubstance
Jumlah bahan
Látkové množství
Stoffmenge
amount of substance
anyagmennyiség
cantidad de sustancia
cantitate de substanță
liczność materii
madde miktarı
množina snovi
quantidade de substância
quantitas substantiae
quantità di sostanza
quantité de matière
Ποσότητα Ουσίας
Количество вещества
Количество вещество
כמות חומר
كمية المادة
مقدار ماده
पदार्थ की मात्रा
物質量
物质的量
chemical amount
jumlah kimia
quantità chimica
quantità di materia
"Amount of Substance of Concentration" is defined as the amount of a constituent divided by the volume of the mixture.
$C_B = \frac{n_B}{V}$, where $n_B$ is the amount of substance $B$ and $V$ is the volume.
"Amount of Substance of Concentration of B" is defined as the amount of a constituent divided by the volume of the mixture.
Applicable units are those of quantitykind:Concentration
Amount of Substance of Concentration
"Fractional Amount of Substance" is defined as tthe amount of a constituent divided by the total amount of all constituents in a mixture.
$x_B = \frac{n_B}{n}$, where $n_B$ is the amount of substance $B$ and $n$ is the total amount of substance.
Applicable units are those of quantitykind:AmountOfSubstanceFraction
Fractional Amount of Substance
"Ion Concentration" is the moles of ions per volume of solution.
Ion Concentration
Applicable units are those of quantitykind:AmountOfSubstancePerMass
Amount of Substance per Mass
The "Variation of Molar Mass" of a gas as a function of pressure.
Applicable units are those of quantitykind:AmountOfSubstancePerMassPressure
Molar Mass variation due to Pressure
The amount of substance per volume is called the molar density. Molar density is an intensive property of a substance and depends on the temperature and pressure.
The amount of substance per unit volume is called the molar density. Molar density is an intensive property of a substance and depends on the temperature and pressure.
Amount of Substance per Volume
The abstract notion of angle. Narrow concepts include plane angle and solid angle. While both plane angle and solid angle are dimensionless, they are actually length/length and area/area respectively.
Applicable units are those of quantitykind:Angle
Angle
Angle of attack is the angle between the oncoming air or relative wind and a reference line on the airplane or wing.
Angle Of Attack
The "Angle of Optical Rotation" is the angle through which plane-polarized light is rotated clockwise, as seen when facing the light source, in passing through an optically active medium.
Angle of Optical Rotation
Angular acceleration is the rate of change of angular velocity over time. Measurement of the change made in the rate of change of an angle that a spinning object undergoes per unit time. It is a vector quantity. Also called Rotational acceleration. In SI units, it is measured in radians per second squared ($rad/s^2$), and is usually denoted by the Greek letter alpha.
Applicable units are those of quantitykind:AngularAcceleration
Accelerație unghiulară
Açısal ivme
Pecutan bersudut
Przyspieszenie kątowe
Winkelbeschleunigung
accelerazione angolare
accélération angulaire
aceleración angular
aceleração angular
angular acceleration
Úhlové zrychlení
Угловое ускорение
تسارع زاوي
شتاب زاویه‌ای
कोणीय त्वरण
角加速度
"Angular Cross-section" is the cross-section for ejecting or scattering a particle into an elementary cone, divided by the solid angle $d\Omega$ of that cone.
Applicable units are those of quantitykind:AngularCrossSection
Angular Cross-section
Angular distance travelled by orbiting vehicle measured from the azimuth of closest approach.
Angular Distance
"Angular frequency", symbol $\omega$ (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate. Angular frequency (or angular speed) is the magnitude of the vector quantity angular velocity.
$\omega = 2\pi f$, where $f$ is frequency.
Applicable units are those of quantitykind:AngularFrequency
Kreisfrequenz
Pulsación
angular frequency
frequenza angolare
frequência angular
pulsación
pulsacja
تردد زاوى
角振動数
角频率
Pulsatanzpulsation
pulsatance
pulsazione
pulsação
نابض
角周波数
角速度
The Angular Impulse, also known as angular momentum, is the moment of linear momentum around a point. It is defined as$H = \int Mdt$, where $M$ is the moment of force and $t$ is time.
Applicable units are those of quantitykind:AngularImpulse
Drehstoß
angular impulse
impulsion angulaire
impulso angolare
impulso angular
impulsão angular
popęd kątowy
نبضة دفعية زاوية
角冲量;冲量矩
角力積
Drehmomentstoß
$\textit{Angular Momentum}$, $\textit{Moment of Momentum}$, or $\textit{Rotational Momentum}$, is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis. The $\textit{Angular Momentum}$ of an object rotating about some reference point is the measure of the extent to which the object will continue to rotate about that point unless acted upon by an external torque. In particular, if a point mass rotates about an axis, then the angular momentum with respect to a point on the axis is related to the mass of the object, the velocity and the distance of the mass to the axis. While the motion associated with linear momentum has no absolute frame of reference, the rotation associated with angular momentum is sometimes spoken of as being measured relative to the fixed stars.
$L = I\omega$, where $I$ is the moment of inertia, and $\omega$ is the angular velocity.
Angular Momentum of an object rotating about some reference point is the measure of the extent to which the object will continue to rotate about that point unless acted upon by an external torque. In particular, if a point mass rotates about an axis, then the angular momentum with respect to a point on the axis is related to the mass of the object, the velocity and the distance of the mass to the axis. While the motion associated with linear momentum has no absolute frame of reference, the rotation associated with angular momentum is sometimes spoken of as being measured relative to the fixed stars. $\textit{Angular Momentum}$, $\textit{Moment of Momentum}, or $\textit{Rotational Momentum", is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.
Applicable units are those of quantitykind:AngularMomentum
Angular Momentum
Applicable units are those of quantitykind:AngularMomentumPerAngle
Angular Momentum per Angle
"Angular Reciprocal Lattice Vector" is a vector whose scalar products with all fundamental lattice vectors are integral multiples of $2\pi$.
Applicable units are those of quantitykind:AngularReciprocalLatticeVector
Angular Reciprocal Lattice Vector
Angular Velocity refers to how fast an object rotates or revolves relative to another point.
The change of angle per unit time; specifically, in celestial mechanics, the change in angle of the radius vector per unit time.
Applicable units are those of quantitykind:AngularVelocity
Açısal hız
Halaju bersudut
Prędkość kątowa
Viteză unghiulară
Winkelgeschwindigkeit
angular velocity
kotna hitrost
velocidad angular
velocidade angular
velocità angolare
vitesse angulaire
Úhlová rychlost
Угловая скорость
سرعة زاوية
سرعت زاویه‌ای
कोणीय वेग
angular speed
kelajuan bersudut
"wavenumber" is the spatial frequency of a wave - the number of waves that exist over a specified distance. More formally, it is the reciprocal of the wavelength. It is also the magnitude of the wave vector.
$k = \frac{2\pi}{\lambda}= \frac{2\pi\upsilon}{\upsilon_p}=\frac{\omega}{\upsilon_p}$, where $\upsilon$ is the frequency of the wave, $\lambda$ is the wavelength, $\omega = 2\pi \upsilon$ is the angular frequency of the wave, and $\upsilon_p$ is the phase velocity of the wave. Alternatively: $k = \frac{p}{\hbar}$, where $p$ is the linear momentum of quasi free electrons in an electron gas and $\hbar$ is the reduced Planck constant ($h$ divided by $2\pi$); for phonons, its magnitude is $k = \frac{2\pi}{\lambda}$, where $\lambda$ is the wavelength of the lattice vibrations.
Applicable units are those of quantitykind:AngularWavenumber
Kreisrepetenz
angular wavenumber
liczba falowa kątowa
nombre d'onde angulaire
numero d'onda angolare
número de onda angular
عدد موجى زاوى
角波数
Kreiswellenzahl
angular repetency
repetencja kątowa
repetência angular
répétence angulaire
تكرار زاوى
Apogee Radius
"Apparent Power" is the product of the rms voltage $U$ between the terminals of a two-terminal element or two-terminal circuit and the rms electric current I in the element or circuit. Under sinusoidal conditions, the apparent power is the modulus of the complex power.
$\left | \underline{S} \right | = UI$, where $U$ is rms value of voltage and $I$ is rms value of electric current.
Applicable units are those of quantitykind:ApparentPower
Scheinleistung
apparent power
moc pozorna
potencia aparente
potenza apparente
potência aparente
puissance apparente
القدرة الظاهرية
皮相電力
视在功率
表观功率
Thermal inertia is a term used to describe the observed delays in a body's temperature response during heat transfers
Applicable units are those of quantitykind:ApparentThermalInertia
Measurement Unit for a quantity approximately proportional to Thermal Inertia
Area is a quantity expressing the two-dimensional size of a defined part of a surface, typically a region bounded by a closed curve.
Applicable units are those of quantitykind:Area
Fläche
Keluasan
aire
alan
area
arie
plocha
pole powierzchni
površina
área
Ταχύτητα
Площ
Площадь
שטח
مساحة
مساحت
क्षेत्रफल
面积
面積
superficie
Applicable units are those of quantitykind:AreaAngle
Area Angle
Applicable units are those of quantitykind:AreaBitDensity
Applicable units are those of quantitykind:ElectricChargePerArea
Applicable units are those of quantitykind:MassPerArea
Measure used to indicate the surface area of structural steel per unit length of the steel part.
Applicable units are those of quantitykind:AreaPerLength
Fläche pro Längeneinheit
area per length
The ratio of an area and the power required for maintaining room temperature at a given level
Applicable units are those of quantitykind:AreaPerPower
Fläche pro Heizlast
area per heating load
Applicable units are those of quantitykind:AreaPerTime
Area per Time
Applicable units are those of quantitykind:AreaRatio
Area Ratio
Applicable units are those of quantitykind:AreaTemperature
Area Temperature
When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling; this dimensional response to temperature change is expressed by its coefficient of thermal expansion.
Applicable units are those of quantitykind:AreaThermalExpansion
Area Thermal Expansion
Applicable units are those of quantitykind:AreaTime
Area Time
Applicable units are those of quantitykind:AreaTimeTemperature
Area Time Temperature
charge Q presented on an area of size A divided by the area A or vector quantity obtained at a given point by adding the electric polarization P to the product of the electric field strength E and the electric constant (permittivity) ε₀
auf einer Fläche mit dem Flächeninhalt A vorhandenen Ladung Q dividiert durch den Flächeninhalt A oder vektorielle Größe, die für einen gegebenen Punkt gleich der Summe der elektrischen Polarisation P und des Produkts aus der elektrischen Feldstärke E und der elektrischen Feldkonstante (Permittivität) ε₀ ist oder räumliche Dichte des elektrischen Moments molekularer Dipole
areic charge density or electric flux density or electric polarization
volume of data, which is usually dependent on the respective complexity of the information or its coding procedure, divided by the related area
Anzahl von Daten, die in der Regel abhängig von der jeweiligen Komplexität der Information oder deren Codierungsverfahren ist, dividiert durch die zugehörige Fläche
areic data volume
energy in a defined direction of propagation through a surface perpendicular to this, divided by its area
Leistung in festgelegter Ausbreitungsrichtung durch ein dazu senkrechtes Oberflächenelement, dividiert durch dessen Fläche
Applicable units are those of quantitykind:PowerPerArea
areic energy flow
$\varphi = \frac{\Phi}{A}$, where $\Phi$ is heat flow rate and $A$ is area.
Aeric Heat Flow Rate
mass divided by the related area
Masse dividiert durch die zugehörige Fläche
areic mass
ratio of a torque acting on a surface and causing a rotation or shearing divided by this area
Quotient aus dem auf eine Fläche wirkenden, eine Verdrehung bzw. Abscherung verursachenden Drehmoment dividiert durch diese Fläche
areic torque
An Asset is an economic resource owned by a business or company. Simply stated, assets are things of value that can be readily converted into cash (although cash itself is also considered an asset).
Asset
A second order reaction rate constant that is a specific second order reaction rate constant that governs the kinetics of an atmospheric, gas-phase reaction between hydroxyl radicals and an organic chemical.
Applicable units are those of quantitykind:AtmosphericHydroxylationRate
Atmospheric Hydroxylation Rate
The pressure exerted by the weight of the air above it at any point on the earth's surface. At sea level the atmosphere will support a column of mercury about $760 mm$ high. This decreases with increasing altitude. The standard value for the atmospheric pressure at sea level in SI units is $101,325 pascals$.
Atmospheric Pressure
"Atom Scattering Factor" is measure of the scattering power of an isolated atom.
$f = \frac{E_a}{E_e}$, where $E_a$ is the radiation amplitude scattered by the atom and $E_e$ is the radiation ampliture scattered by a single electron.
Applicable units are those of quantitykind:AtomScatteringFactor
Atom Scattering Factor
"Atomic Attenuation Coefficient" is a measurement of how strongly a chemical species or substance absorbs or scatters light at a given wavelength, per the number of atoms in the substance.
$\mu_a = -\frac{\mu}{n}$, where $\mu$ is the linear attenuation coefficient and $n$ is the number density of the atoms in the substance.
Atomic Attenuation Coefficient
The electric charge of an ion, equal to the number of electrons the atom has gained or lost in its ionization multiplied by the charge on one electron.
Applicable units are those of quantitykind:ElectricCharge
Atomic Charge
scalar quantity of elementary particles which is retained within a system following any change and, as saved energy, constitutes the capability of a physical system to carry out work
skalare Größe von Elementarteilchen, die bei beliebiger Umwandlung innerhalb eines Systems erhalten bleibt und als gespeichertes Arbeitsvermögen die Fähigkeit eines physikalischen Systems darstellt, Arbeit zu verrichten
atomic energy
The "Atomic Mass" is the mass of a specific isotope, most often expressed in unified atomic mass units.
Applicable units are those of quantitykind:Mass
Atomic Mass
The "Atomic Number", also known as the proton number, is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. A nuclide is a species of atom with specified numbers of protons and neutrons. Nuclides with the same value of Z but different values of N are called isotopes of an element. The ordinal number of an element in the periodic table is equal to the atomic number. The atomic number equals the charge of the nucleus in units of the elementary charge.
Applicable units are those of quantitykind:AtomicNumber
Atomic Number
ratio of the linear stopping power to the number density of the atoms in the medium
Quotient aus dem linearen Bremsvermögen und der Anzahldichte der Atome in dem Medium
atomic stopping power
The attenuation coefficient is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter. A large attenuation coefficient means that the beam is quickly "attenuated" (weakened) as it passes through the medium, and a small attenuation coefficient means that the medium is relatively transparent to the beam. The Attenuation Coefficient is also called linear attenuation coefficient, narrow beam attenuation coefficient, or absorption coefficient.
$F(x) = Ae^{-\alpha x} \cos{[\beta (x - x_0)]}$, then $\alpha$ is the attenuation coefficient and $\beta$ is the phase coefficient.
Applicable units are those of quantitykind:AttenuationCoefficient
Attenuation Coefficient
"Auditory Thresholds" is the thresholds of sensitivity to auditory signals and other input to the ear or the sense of hearing.
Applicable units are those of quantitykind:SoundPowerLevel
Auditory Thresholds
Magnetic Fields surround magnetic materials and electric currents and are detected by the force they exert on other magnetic materials and moving electric charges. The electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic field. A pure electric field in one reference frame is observed as a combination of both an electric field and a magnetic field in a moving reference frame. The Auxillary Magnetic Field, H characterizes how the true Magnetic Field B influences the organization of magnetic dipoles in a given medium.
Applicable units are those of quantitykind:MagneticFieldStrength
Auxillary Magnetic Field
"Average Energy Loss per Elementary Charge Produced" is also referred to as average energy loss per ion pair formed.
$W_i = \frac{E_k}{N_i}$, where $E_k$ is the initial kinetic energy of an ionizing charged particle and $N_i$ is the total ionization produced by that particle.
Average Energy Loss per Elementary Charge Produced
Average Head End Pressure
"Average Logarithmic Energy Decrement" is a measure of the amount of energy a neutron loses upon colliding with various nuclei. It is the average value of the increase in lethargy in elastic collisions between neutrons and nuclei whose kinetic energy is negligible compared with that of the neutrons.
Applicable units are those of quantitykind:AverageLogarithmicEnergyDecrement
Average Logarithmic Energy Decrement
Average Specific Impulse
Applicable units are those of quantitykind:Force
Average Vacuum Thrust
The horizontal angle between an object's orientation frame and a cardinal direction, generally north. In the context of architecture, this would refer to the direction a structure faces relative to the direction north.
The horizontal angle between an object and a cardinal direction, generally north. In the context of architecture, this would refer to the direction a structure faces relative to the direction north.
Azimuth
parameter of transmission media for determination of frequency and length restrictions as reciprocal value of the multimode distortion corresponding to the product of maximum pulse frequency and maximum transmission distance
Parameter von Übertragungsmedien zur Bestimmung der Frequenz- und Längenrestriktionen als reziproke Wert der Modendispersion entsprechend dem Produkt aus maximaler Impulsfrequenz mal maximaler Übertragungsstrecke
bandwidth length product
Chemicals or substances having a $pH$ higher than 7 are said to be basic; higher $pH$ means higher basicity.
Chemicals or substances having a pH higher than 7 are said to be basic; higher pH means higher basicity.
Applicable units are those of quantitykind:Basicity
Basicity
quantity of electricity or electrical charge which a fully charged battery can supply under specified conditions as a product of discharge current and discharge time
Elektrizitätsmenge oder elektrische Ladung, die eine vollgeladenen Batterie unter festgelegten Bedingungen abgeben kann als Produkt aus Entladestrom und Entladezeit
Applicable units are those of quantitykind:BatteryCapacity
battery capacity
A bending moment exists in a structural element when a moment is applied to the element so that the element bends. It is the component of moment of force perpendicular to the longitudinal axis of a beam or a shaft.
$M_b = M \cdot e_Q$, where $M$ is the momentof force and $e_Q$ is a unit vector directed along a $Q-axis$ with respect to which the torque is considered.
Applicable units are those of quantitykind:Torque
Bending Moment of Force
"Beta Disintegration Energy" is the energy released by a beta particle radioactive decay. It is the sum of the maximum beta-particle kinetic energy and the recoil energy of the atom produced in the reference frame in which the emitting nucleus is at rest before its disintegration.
Beta Disintegration Energy
Pitch angle in bevel gears is the angle between an element of a pitch cone and its axis. In external and internal bevel gears, the pitch angles are respectively less than and greater than 90 degrees.
Bevel Gear Pitch Angle
ratio of the median information content divided by the expected value for the duration of a character, expressed as a logarithm to base 2
Quotient mittlerer Informationsgehalt durch den Erwartungswert für die Dauer eines Zeichens, ausgedrückt als Logarithmus zur Basis 2
median information flow (from a source of information), expressed as a binary logarithm
The "Binding Fraction" is the ratio of the binding energy of a nucleus to the atomic mass number.
$b = \frac{B_r}{A}$, where $B_r$ is the relative mass defect and $A$ is the nucleon number.
Applicable units are those of quantitykind:BindingFraction
Binding Fraction
The bioconcentration factor is the ratio of the concentration of a chemical substance in biota over the concentration of the same chemical substance in water. It is related to the octanol-water partition coefficient.
Applicable units are those of quantitykind:BioconcentrationFactor
Bioconcentration Factor
A time that quantifies how long it takes to reduce a substance's concentration by 50% from any concentration point in time in a water or soil environment by either bacteria or another living organism.
Applicable units are those of quantitykind:BiodegredationHalfLife
Biodegredation Half Life
the rate at which a specific chemical element or compound is processed or transformed, as amount per unit mass of the relevant material Unreduced, SI unit is mole * kg-1 * s-1
the rate at which a specific chemical element or compound is processed or transformed, as amount per unit mass of the relevant material. Unreduced, SI unit is mole * kg-1 * s-1
Biogeochemical Rate
name for a particular quantity of data on the basis of the binary digit "Bit" (basic indissoluble information unit) which can only assume a state of 1 or 0
Bezeichnung für eine bestimmte Anzahl von Daten auf Basis der Binärziffer Bit (en: Basic Indissoluble Information Unit, dt: kleinstmögliche Informationseinheit), welche nur den Zustand 1 oder 0 annehmen kann
bit data volume
Applicable units are those of quantitykind:BitRate
speed with which one bit will be transmitted per second
Geschwindigkeit, mit der Binärzeichen übertragen werden
bit transmission rate
Blood sugar level, blood sugar concentration, or blood glucose level is the amount of glucose present in the blood of humans and animals. Glucose is a simple sugar and approximately 4 grams of glucose are present in the blood of humans at all times. Stored in skeletal muscle and liver cells in the form of glycogen, the body tightly regulates blood glucose levels as a part of metabolic homeostasis. During fasting blood glucose is maintained at a constant level at the expense of the glycogen stores in the liver and skeletal muscle. There are two main methods of describing concentrations: by weight, and by molecular count. Weights are in grams and molecular counts in moles. A mole is $6.022\times 10^{23}$ molecules. In both cases, the unit is usually modified by $milli-$ or $micro-$ or other prefix, and is always $per$ some volume, often a litre. Conversion factors depend on the molecular weight of the substance in question. $mmol/L$ is millimoles/liter, and is the world standard unit for measuring glucose in blood. Specifically, it is the designated SI (Systeme International) unit. Some countries use $mg/dl$. A mole is about $6\times 10^{23}$ molecules. $mg/dL$ (milligrams/deciliter) is the traditional unit for measuring $bG$ (blood glucose). There is a trend toward using $mmol/L$ however $mg/dL$ is much in practice. Some use is made of $mmol/L$ as the primary unit with $mg/dL$ quoted in parentheses. This acknowledges the large base of health care providers, researchers and patients who are already familiar with $mg/dL$.
Applicable units are those of quantitykind:BloodGlucoseLevel
Blood Glucose Level
Blood Glucose Level by Mass
$\textit{Body Mass Index}$, BMI, is an index of weight for height, calculated as: $BMI = \frac{M_{body}}{H^2}$, where $M_{body}$ is body mass in kg, and $H$ is height in metres. The BMI has been used as a guideline for defining whether a person is overweight because it minimizes the effect of height, but it does not take into consideration other important factors, such as age and body build. The BMI has also been used as an indicator of obesity on the assumption that the higher the index, the greater the level of body fat.
Applicable units are those of quantitykind:BodyMassIndex
Body Mass Index
A temperature that is the one at which a substance will change its physical state from a liquid to a gas. It is also the temperature where the liquid and gaseous forms of a pure substance can exist in equilibrium.
Applicable units are those of quantitykind:BoilingPoint
Boiling Point Temperature
"Bragg Angle" describes the condition for a plane wave to be diffracted from a family of lattice planes, the angle between the wavevector of the incident plane wave, and the lattice planes.
Bragg Angle
"Breadth" is the extent or measure of how broad or wide something is.
Breite
ancho
breadth
genişliği
largeur
larghezza
largura
lebar
szerokość
širina
šířka
ширина
العرض
عرض
寬度
Applicable units are those of quantitykind:Dimensionless
Buckling Factor
The bulk modulus of a substance measures the substance's resistance to uniform compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume.
$K = \frac{p}{\vartheta}$, where $p$ is pressure and $\vartheta$ is volume strain.
Applicable units are those of quantitykind:BulkModulus
Bulk Modulus
"Burgers Vector" is the vector characterizing a dislocation, i.e. the closing vector in a Burgers circuit encircling a dislocation line.
Burgers Vector
Applicable units are those of quantitykind:Velocity
Burn Rate
Burn Time
bursting pressure divided by areic mass
Quotient Berstdruck dividiert durch die flächenbezogene Masse
Applicable units are those of quantitykind:BurstFactor
burst factor
particular quantity of data based on a string consisting of 8 bits
Anzahl von Daten auf Basis einer Zeichenfolge, die aus je 8 Bit besteht
Applicable units are those of quantitykind:Count
byte data volume
Applicable units are those of quantitykind:ByteRate
speed with which 8 bits are transmitted
Geschwindigkeit, mit der 8 Binärzeichen übertragen werden
byte transmission rate
Center of Gravity in the X axis
Center of Gravity in the Y axis
Center of Gravity in the Z axis
The point at which the distributed mass of a composite body can be acted upon by a force without inducing any rotation of the composite body.
Center of Mass (CoM)
The CO2 equivalent is a measure used to compare the emissions from various greenhouse gases on the basis of their global-warming potential (GWP), by converting amounts of other gases to the equivalent amount of carbon dioxide with the same global warming potential.
Applicable units are those of quantitykind:CO2Equivalent
Contractual mass requirement of a delivered item. Note that The term 'control mass' is sometimes utilized as a limit in lieu of CEI mass when a CEI mass does not exist. The term 'Interface Control Document Mass' is another alternative for specifying a contractual mass requirement.
Contract End Item (CEI) Specification Mass.
The upper design gross mass limit of a system at a specified mission event against which margins are calculated after accounting for basic masses of flight hardware, MGA, and uncertainties. It may include propellants, crew, and cargo.
Control Mass.
A "Canonical Partition Function" applies to a canonical ensemble, in which the system is allowed to exchange heat with the environment at fixed temperature, volume, and number of particles.
$Z = \sum_r e^{-\frac{E_r}{kT}}$, where the sum is over all quantum states consistent with given energy, volume, external fields, and content, $E_r$ is the energy in the $rth$ quantum state, $k$ is the Boltzmann constant, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:CanonicalPartitionFunction
Canonical Partition Function
"Capacitance" is the ability of a body to hold an electrical charge; it is quantified as the amount of electric charge stored for a given electric potential. Capacitance is a scalar-valued quantity.
$C = Q/U$, where $Q$ is electric charge and $V$ is voltage.
Applicable units are those of quantitykind:Capacitance
Capacitance
In computer operations, (a) the largest quantity which can be stored, processed, or transferred; (b) the largest number of digits or characters which may regularly be processed; (c) the upper and lower limits of the quantities which may be processed. In other contexts, the amount of material that can be stored, such as fuel or food.
Capacity
"Carrier LifetIme" is a time constant for recombination or trapping of minority charge carriers in semiconductors.
Carrier LifetIme
"Area" is a quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane.
$A = \int\int dxdy$, where $x$ and $y$ are cartesian coordinates.
Cartesian Area
"Cartesian Coordinates" specify each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances from the point to two fixed perpendicular directed lines, measured in the same unit of length.
Cartesian coordinates
Kartézská soustava souřadnic
Koordiant Kartesius
coordenadas cartesianas
coordinate cartesiane
coordonnées cartésiennes
kartesische Koordinaten
kartezyen koordinatları
مختصات دکارتی
直角坐标系
Kartézské souřadnice
"Volume" is the quantity of three-dimensional space enclosed by some closed boundary, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
$V = \int\int\int dxdydz$, where $x$, $y$, and $z$ are cartesian coordinates.
Applicable units are those of quantitykind:Volume
Isipadu
Objem
Volumen
hacim
objętość
prostornina
volum
volume
volumen
Επιτάχυνση
Обем
Объём
נפח
حجم
आयतन
体积
体積
An index of the actual or potential activity of a catalyst. The catalytic activity of an enzyme or an enzyme-containing preparation is defined as the property measured by the increase in the rate of conversion of a specified chemical reaction that the enzyme produces in a specified assay system. Catalytic activity is an extensive quantity and is a property of the enzyme, not of the reaction mixture; it is thus conceptually different from rate of conversion although measured by and equidimensional with it. The unit for catalytic activity is the $katal$; it may also be expressed in mol $s^{-1}$. Dimensions: $N T^{-1}$. Former terms such as catalytic ability, catalytic amount, and enzymic activity are no er recommended. Derived quantities are molar catalytic activity, specific catalytic activity, and catalytic activity concentration. Source(s): www.answers.com
Applicable units are those of quantitykind:CatalyticActivity
Catalytic Activity
The catalytic activity of an enzyme per unit volume, where volume refers to that of the original enzyme‐containing preparation, not that of the assay system. It may be expressed in katals per litre.
Applicable units are those of quantitykind:CatalyticActivityConcentration
Catalytic Activity Concentration
"Celsius Temperature", the thermodynamic temperature T_0, is exactly 0.01 kelvin below the thermodynamic temperature of the triple point of water.
"Celsius Temperature", the thermodynamic temperature $T_0$, is exactly $0.01$kelvin below the thermodynamic temperature of the triple point of water. $t = T - T_0$, where $T$ is Thermodynamic Temperature and $T_0 = 273.15 K$.
Applicable units are those of quantitykind:ThermodynamicTemperature
Celsius sıcaklık
Celsius temperature
Celsius-Temperatur
Suhu Celsius
temperatura Celsius
temperatura celsius
temperatura
temperatură Celsius
température Celsius
teplota
Температура Цельсия
צלזיוס
درجة الحرارة المئوية أو السيلسيوس
دمای سلسیوس/سانتیگراد
सेल्सियस तापमान
温度
Characteristic impedance at a point in a non-dissipative medium and for a plane progressive wave, the quotient of the sound pressure $p$ by the component of the sound particle velocity $v$ in the direction of the wave propagation.
$Z_c = pc$, where $p$ is the sound pressure and $c$ is the phase speed of sound.
Characteristic Acoustic Impedance
quantity of dimension one (as a result of measuring technology theory) which clarifies facts, states or developments and is used as a scale e.g. to represent causes and effects of events
Größe der Dimension 1 (als Ergebnis der metrisierenden Messtheorie), die Sachverhalte, Zustände oder Entwicklungen verdeutlicht und als Maßstab dient, um z. B. Ursache und Wirkung von Vorgängen in kausalem Zusammenhang darzustellen
characteristic number
Characteristic velocity or $c^{*}$ is a measure of the combustion performance of a rocket engine independent of nozzle performance, and is used to compare different propellants and propulsion systems.
Characteristic Velocity
The "Charge Number", or just valance of an ion is the coefficient that, when multiplied by the elementary charge, gives the ion's charge.
Applicable units are those of quantitykind:ChargeNumber
Charge Number
In chemical physics and physical chemistry, "Chemical Affinity" is the electronic property by which dissimilar chemical species are capable of forming chemical compounds. Chemical affinity can also refer to the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition.
$A = -\sum \nu_b\mu_B$, where $\nu_b$ is the stoichiometric number of substance $B$ and $\mu_B$ is the chemical potential of substance $B$.
Applicable units are those of quantitykind:ChemicalAffinity
Chemical Affinity
In the context of a chemical durability test, this is measure of how much of a solution (often a corrosive or reactive one) is consumed or used up per unit mass of a material being tested. In other words, this the volume of solution needed to cause a certain level of chemical reaction or damage to a given mass of the material.
Applicable units are those of quantitykind:SpecificVolume
Chemical Consumption per Mass
"Chemical Potential", also known as partial molar free energy, is a form of potential energy that can be absorbed or released during a chemical reaction.
$\mu_B = (\frac{\partial G}{\partial n_B})_{T,p,n_i}$, where $G$ is Gibbs energy, and $n_B$ is the amount of substance $B$.
Applicable units are those of quantitykind:MolarEnergy
Chemický potenciál
Keupayaan kimia
Potencjał chemiczny
Potențial chimic
chemical potential
chemisches Potential des Stoffs B
kimyasal potansiyel
potencial químico
potential chimique
potenziale chimico
Химический потенциал
جهد كيميائي
پتانسیل شیمیایی
化学ポテンシャル
化学势
Chromaticity is an objective specification of the quality of a color regardless of its luminance
Applicable units are those of quantitykind:Chromaticity
Chromaticity
In fluid dynamics, circulation is the line integral around a closed curve of the fluid velocity. It has dimensions of length squared over time.
Circulation
Closest Approach Radius
"Coefficient of Heat Transfer", in thermodynamics and in mechanical and chemical engineering, is used in calculating the heat transfer, typically by convection or phase transition between a fluid and a solid. The heat transfer coefficient is the proportionality coefficient between the heat flux, that is heat flow per unit area, q/A, and the thermodynamic driving force for the flow of heat (that is, the temperature difference, (Delta T). Areic heat flow rate divided by thermodynamic temperature difference. In building technology, the "Coefficient of Heat Transfer", is often called "thermal transmittance}" with the symbol "U". It has SI units in watts per squared meter kelvin.
"Coefficient of Heat Transfer", in thermodynamics and in mechanical and chemical engineering, is used in calculating the heat transfer, typically by convection or phase transition between a fluid and a solid. The heat transfer coefficient is the proportionality coefficient between the heat flux, that is heat flow per unit area, $q/A$, and the thermodynamic driving force for the flow of heat (that is, the temperature difference, $ \bigtriangleup T $). Areic heat flow rate divided by thermodynamic temperature difference. In building technology, the $\textit{Coefficient of Heat Transfer}$, is often called $\textit{thermal transmittance}$, with the symbol $U$. $\textit{Coefficient of Heat Transfer}$, has SI units in watts per squared meter kelvin: $W/(m^2 \cdot K)$ . $K = \frac{\varphi}{T}$, where $\varphi$ is areic heat flow rate and $T$ is thermodynamic temperature difference.
Applicable units are those of quantitykind:CoefficientOfHeatTransfer
Coefficient of heat transfer
"Coefficient of Performance",is a measure of the efficiency of a heating or cooling system, defined as the ratio of useful heating or cooling output to the energy input required to achieve it.
""Coefficient of Performance",is a measure of the efficiency of a heating or cooling system, defined as the ratio of useful heating or cooling output to the energy input required to achieve it.
Applicable units are those of quantitykind:CoefficientOfPerformance
CoefficientOfPerformance
$\textit{Coercivity}$, also referred to as $\textit{Coercive Field Strength}$, is the magnetic field strength to be applied to bring the magnetic flux density in a substance from its remaining magnetic flux density to zero. This is defined as the coercive field strength in a substance when either the magnetic flux density or the magnetic polarization and magnetization is brought from its value at magnetic saturation to zero by monotonic reduction of the applied magnetic field strength. The quantity which is brought to zero should be stated, and the appropriate symbol used: $H_{cB}$, $H_{cJ}$ or $H_{cM}$ for the coercivity relating to the magnetic flux density, the magnetic polarization or the magnetization respectively, where $H_{cJ} = H_{cM}$.
Applicable units are those of quantitykind:Coercivity
Coercivity
"Coherence Length" characterizes the distance in a superconductor over which the effect of a perturbation is appreciable.
Coherence Length
"Cold Receptor Threshold" is the threshold of cold-sensitive free nerve-ending.
Applicable units are those of quantitykind:Temperature
Cold Receptor Threshold
$h = h_r + h_c + h_k$, where $h_r$ is the linear radiative heat transfer coefficient, $h_c$ is the convective heat transfer coefficient, and $h_k$ is the conductive heat transfer coefficient.
Applicable units are those of quantitykind:CombinedNonEvaporativeHeatTransferCoefficient
Combined Non Evaporative Heat Transfer Coefficient
Combustion Chamber Temperature
ratio of the median information content divided by the expected value for the duration of a character, expressed as a logarithm to base 10
Quotient mittlerer Informationsgehalt durch den Erwartungswert für die Dauer eines Zeichens, ausgedrückt als Logarithmus zur Basis 10
median information flow (from a source of information), expressed as a common logarithm
Applicable units are those of quantitykind:Frequency
$\textit{Complex Power}$, under sinusoidal conditions, is the product of the phasor $\mathbf{U}$ representing the voltage between the terminals of a linear two-terminal element, or two-terminal circuit and the complex conjugate of the phasor $I$ representing the electric current in the element or circuit.
$\underline{S} = \underline{U}\underline{I^*}$, where $\underline{U}$ is voltage phasor and $\underline{I^*}$ is the complex conjugate of the current phasor.
Complex Power
A "Compound Plane Angle" is a compound measure of plane angle in degrees, minutes, seconds, and optionally millionth-seconds of arc.
Applicable units are those of quantitykind:PlaneAngle
Compound Plane Angle
Compressibility is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change.
$\chi = -(\frac{1}{V})\frac{dV}{d\rho}$, where $V$ is volume and $p$ is pressure.
Applicable units are those of quantitykind:Compressibility
Compressibility
The compressibility factor ($Z$) is a useful thermodynamic property for modifying the ideal gas law to account for the real gas behaviour. The closer a gas is to a phase change, the larger the deviations from ideal behavior. It is simply defined as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure. Values for compressibility are calculated using equations of state (EOS), such as the virial equation and van der Waals equation. The compressibility factor for specific gases can be obtained, with out calculation, from compressibility charts. These charts are created by plotting Z as a function of pressure at constant temperature.
Applicable units are those of quantitykind:DimensionlessRatio
Compressibility Factor
In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Furthermore, in chemistry, four types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in solutions.
Concentration
$\textit{Conductance}$, for a resistive two-terminal element or two-terminal circuit with terminals A and B, quotient of the electric current i in the element or circuit by the voltage $u_{AB}$ between the terminals: $G = \frac{1}{R}$, where the electric current is taken as positive if its direction is from A to B and negative in the opposite case. The conductance of an element or circuit is the inverse of its resistance.
$G = Re\underline{Y}$, where $\underline{Y}$ is admittance. Alternatively: $G = \frac{1}{R}$, where $R$ is resistance.
Applicable units are those of quantitykind:Conductance
Conductance
"Conduction Speed" is the speed of impulses in nerve fibers.
Applicable units are those of quantitykind:ConductionSpeed
Conduction Speed
"Conductive Heat Transfer Rate" is proportional to temperature gradient and area of contact.
Applicable units are those of quantitykind:HeatFlowRate
Conductive Heat Transfer Rate
$\textit{Conductivity}$ is a scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density. For an isotropic medium the conductivity is a scalar quantity; for an anisotropic medium it is a tensor quantity. $$\mathbf{J} = \sigma \mathbf{E}$$ Where $\mathbf{J}$ is electric current density, and $\mathbf{E}$ is electric field strength.
$\mathbf{J} = \sigma \mathbf{E}$, where $\mathbf{J}$ is electric current density, and $\mathbf{E}$ is electric field strength.
"Conductivity" is a scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density. For an isotropic medium the conductivity is a scalar quantity; for an anisotropic medium it is a tensor quantity.
Applicable units are those of quantitykind:Conductivity
Conductivity
Applicable units are those of quantitykind:ConductivityVariance
Conductivity Variance
Variance for NEON conductivity data measured in MicroS-PER-CM
Conductivity Variance, NEON
In optics and lens design, constringence of a transparent material, also known as the Abbe number or the V-number, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of V indicating low dispersion.
Applicable units are those of quantitykind:Constringence
Constringence
Abbe Number
V-number
"Convective Heat Transfer" is convective heat transfer coefficient multiplied by temperature difference and exchange area.
Convective Heat Transfer
Correlated color temperature (CCT) is a measure of light source color appearance defined by the proximity of the light source's chromaticity coordinates to the blackbody locus, as a single number rather than the two required to specify a chromaticity.
Applicable units are those of quantitykind:CorrelatedColorTemperature
Correlated Color Temperature
Correlated Colour Temperature
In the construction industry, cost per area is the unit rate which, when multiplied by the gross internal floor area (GIFA), gives the total building works estimate (i.e.works cost estimate less main contractor’s preliminaries and main contractor’s overheads and profit).
Applicable units are those of quantitykind:CostPerArea
Kosten pro Fläche
cost per area
Applicable units are those of quantitykind:CostPerEnergy
Energiekosten
energy cost
Represents the cost associated with a unit mass of a substance or material. It is typically used in economic and engineering contexts to evaluate the expense incurred per kilogram, gram, or other units of mass. This measure helps in comparing the economic efficiency of different materials or substances based on their mass.
Applicable units are those of quantitykind:CostPerMass
Kosten pro Masse
cost per mass
In photovoltaics, cost per power of electricity produced measures the cost of installing the hardware relative to the power produced.
Applicable units are those of quantitykind:CostPerPower
Anschaffungskosten pro Watt
cost per power
"Count" is the value of a count of items.
Count
A measure of a number of items counted per time period.
This measure may be used for measuring integer units per second or per hour. For example, it may be used to measure the number of books per hour passing along a part of a mechanical book handling system, the number of people per hour travelling along a moving walkway or the number of vehicles per hour travelling along a section of road.
Applicable units are those of quantitykind:CountRate
CountRate
"Coupling Factor" is the ratio of an electromagnetic quantity, usually voltage or current, appearing at a specified location of a given circuit to the corresponding quantity at a specified location in the circuit from which energy is transferred by coupling.
For inductive coupling between two inductive elements, $k = \frac{\left | L_{mn} \right |}{\sqrt{L_m L_n}}$, where $L_m$ and $L_n$ are their self inductances, and $L_{mn}$ is their mutual inductance.
Applicable units are those of quantitykind:CouplingFactor
Constantă de cuplaj
constante de acoplamiento
constante de couplage
coupling factor
fattore di accoppiamento
stała sprzężenia
Çiftlenim sabiti
Константа взаимодействия
結合定数
耦合常數
"Cross-section" is used to express the likelihood of interaction between particles. For a specified target particle and for a specified reaction or process produced by incident charged or uncharged particles of specified type and energy, it is the mean number of such reactions or processes divided by the incident-particle fluence.
Cross-section
Cross-sectional Area
Applicable units are those of quantitykind:CubicElectricDipoleMomentPerSquareEnergy
Cubic Electric Dipole Moment per Square Energy
$\alpha_V = \frac{1}{V} \; \frac{dV}{dT}$, where $V$ is $volume$ and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:ExpansionRatio
Hullámszám
Volumenausdehnungskoeffizient
coefficient de dilatation volumique
coefficiente di dilatazione volumica
coeficiente de dilatación cúbica
coeficiente de dilatação volúmica
cubic expansion coefficient
kübik genleşme katsayısı
współczynnik rozszerzalności objętościowej
Κυματαριθμός
Вълново число
Температурный коэффициент
מספר גל
ضریب انبساط گرمایی
معامل التمدد الحجمى
体膨胀系数
線膨張係数
"Curie Temperature" is the critical thermodynamic temperature of a ferromagnet.
Curie sıcaklığı
Curie temperature
Curie-Temperatur
Curieova teplota
Punct Curie
Suhu Curie
punto di Curie
temperatura Curie
temperatura de Curie
température de Curie
Точка Кюри
درجة حرارة كوري
نقطه کوری
क्यूरी ताप
キュリー温度
居里点
In economics, currency is a generally accepted medium of exchange. These are usually the coins and banknotes of a particular government, which comprise the physical aspects of a nation's money supply. The other part of a nation's money supply consists of bank deposits (sometimes called deposit money), ownership of which can be transferred by means of cheques, debit cards, or other forms of money transfer. Deposit money and currency are money in the sense that both are acceptable as a means of payment.
Applicable units are those of quantitykind:Currency
Currency
Applicable units are those of quantitykind:CurrencyPerFlight
Currency Per Flight
"Current Linkage" is the net electric current through a surface delimited by a closed loop.
Applicable units are those of quantitykind:CurrentLinkage
Current Linkage
ratio of the amount of substance divided by the related time
Quotient Stoffmenge dividiert durch die zugehörige Zeit
current of the amount of substance
The canonical example of extrinsic curvature is that of a circle, which has curvature equal to the inverse of its radius everywhere. Smaller circles bend more sharply, and hence have higher curvature. The curvature of a smooth curve is defined as the curvature of its osculating circle at each point. The osculating circle of a sufficiently smooth plane curve at a given point on the curve is the circle whose center lies on the inner normal line and whose curvature is the same as that of the given curve at that point. This circle is tangent to the curve at the given point. The magnitude of curvature at points on physical curves can be measured in $diopters$ (also spelled $dioptre$) — this is the convention in optics.
The canonical example of extrinsic curvature is that of a circle, which has curvature equal to the inverse of its radius everywhere. Smaller circles bend more sharply, and hence have higher curvature. The curvature of a smooth curve is defined as the curvature of its osculating circle at each point. The osculating circle of a sufficiently smooth plane curve at a given point on the curve is the circle whose center lies on the inner normal line and whose curvature is the same as that of the given curve at that point. This circle is tangent to the curve at the given point. That is, given a point P on a smooth curve C, the curvature of C at P is defined to be 1/R where R is the radius of the osculating circle of C at P. The magnitude of curvature at points on physical curves can be measured in diopters (also spelled dioptre) — this is the convention in optics. [Wikipedia],
Applicable units are those of quantitykind:Curvature
Curvature
In mathematics "Curvature" is the amount by which a geometric object deviates from being flat, or straight in the case of a line, but this is defined in different ways depending on the context.
$\kappa = \frac{1}{\rho}$, where $\rho$ is the radius of the curvature.
Applicable units are those of quantitykind:CurvatureFromRadius
cut-off current parameter as rating for fuses and switches, derived from the so-called Joule integral
Durchlassstrom-Kennwert als Bemessungsgröße für Sicherungen und Schalter, welcher abgeleitet ist aus dem sogenannten Joule-Integral
I²t-value
The "Cyclotron Angular Frequency" describes angular momentum vector precession about the external field axis with an angular frequency.
$\omega_c = \frac{\left | q \right |}{m}B$, where $q$ is the electric charge, $m$ is its mass, and $B$ is the magnetic flux density.
Larmor Angular Frequency
The change in translational velocity including all losses for a propulsive system or module. Delta-V losses include, but are not limited to, gravity losses and steering losses.
Delta-V
Mass of a system without the propellants, pressurants, reserve or residual fluids, personnel and personnel provisions, and cargo.
Dry Mass
The frequency derived from the period of time required to transmit one bit. This represents the amount of data transferred per second by a communications channel or a computing or storage device. Data rate is measured in units of bits per second (written "b/s" or "bps"), bytes per second (Bps), or baud. When applied to data rate, the multiplier prefixes "kilo-", "mega-", "giga-", etc. (and their abbreviations, "k", "M", "G", etc.) always denote powers of 1000. For example, 64 kbps is 64,000 bits per second. This contrasts with units of storage which use different prefixes to denote multiplication by powers of 1024, for example 1 kibibit = 1024 bits.
Applicable units are those of quantitykind:DataRate
Data Rate
data transmission rate
Applicable units are those of quantitykind:DatasetOfBits
"Debye-Waller Factor" (DWF), named after Peter Debye and Ivar Waller, is used in condensed matter physics to describe the attenuation of x-ray scattering or coherent neutron scattering caused by thermal motion. Also, a factor by which the intensity of a diffraction line is reduced because of the lattice vibrations.
$u = R - R_0$, where $R$ is the particle position vector and $R_0$ is the equilibrium position vector of a particle.
Applicable units are those of quantitykind:Debye-WallerFactor
Debye-Waller Factor
"Debye Angular Frequency" is the cut-off angular frequency in the Debye model of the vibrational spectrum of a solid.
Debye Angular Frequency
"Debye Angular Wavenumber" is the cut-off angular wavenumber in the Debye model of the vibrational spectrum of a solid.
Applicable units are those of quantitykind:DebyeAngularWavenumber
Debye Angular Wavenumber
"Debye Temperature" is the temperature at which the highest-frequency mode (and hence all modes) are excited.
$\Theta_D = \frac{\hbar\omega_D}{k}$, where $k$ is the Boltzmann constant, $\hbar$ is the reduced Planck constant, and $\omega_D$ is the Debye angular frequency.
Debye Temperature
The "Decay Constant" is the proportionality between the size of a population of radioactive atoms and the rate at which the population decreases because of radioactive decay.
Relative variation $\frac{dN}{N}$ of the number $N$ of atoms or nuclei in a system, due to spontaneous emission from these atoms or nuclei during an infinitesimal time interval, divided by its duration $dt$, thus $\lambda = -\frac{1}{N}\frac{dN}{dt}$.
Applicable units are those of quantitykind:DecayConstant
Decay Constant
The "Degree of Dissociation" is the fraction of original solute molecules that have dissociated.
Applicable units are those of quantitykind:DegreeOfDissociation
Degree of Dissociation
The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is $\rho$. Mathematically, density is defined as mass divided by volume: $\rho = m/V$, where $\rho$ is the density, $m$ is the mass, and $V$ is the volume. In some cases, density is also defined as its weight per unit volume, although this quantity is more properly called specific weight.
$\rho = m/V$, where $\rho$ is the density, $m$ is the mass, and $V$ is the volume.
Density
Applicable units are those of quantitykind:MassDensity
Density In Combustion Chamber
"Density of States" is the number of vibrational modes in an infinitesimal interval of angular frequency divided by the range of that interval and by volume.
Applicable units are those of quantitykind:DensityOfStates
Density of states
Density Of The Exhaust Gases
Depth typically refers to the vertical measure of length from the surface of a liquid.
Depth
"Dew Point Temperature" is the temperature at which vapour in air reaches saturation.
Dew Point Temperature
In classical geometry, the "Diameter" of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.
$d = 2r$, where $r$ is the radius of the circle.
Durchmesser
diameter
diametro
diamètre
diámetro
diâmetro
premer
průměr
çap
średnica
диаметр
قطر
直径
The pressure of blood in the arteries which rises to a maximum as blood is pumped out by the left ventricle (systole) and drops to a minimum in diastole. The systolic/diastolic pressure is normally ~120/80 mmHg in a young adult.
Diastolic Blood Pressure
"Diffusion Area" in an infinite homogenous medium, is one-sixth of the mean square distance between the point where a neutron enters a specified class and the point where it leaves that class.
Diffusion Area
The "Diffusion Coefficient" is a proportionality constant between the molar flux due to molecular diffusion and the gradient in the concentration of the species (or the driving force for diffusion). Diffusivity is encountered in Fick's law and numerous other equations of physical chemistry.
$C_B \left \langle \nu_B \right \rangle = -D grad C_B$, where $C_B$ the local molecular concentration of substance $B$ in the mixture and $\left \langle \nu_B \right \rangle$ is the local average velocity of the molecules of $B$.
Applicable units are those of quantitykind:DiffusionCoefficient
Diffusionskoeffizient
coefficient de diffusion
coefficiente di diffusione
coeficiente de difusión
coeficiente de difusão
diffusion coefficient
difuzijski koeficient
The "Diffusion Coefficient for Fluence Rate" is a proportionality constant between the .
$D_\varphi = -\frac{J_x}{\frac{\partial d\varphi}{\partial dx}}$, where $J_x$ is the $x-component$ of the particle current and $\varphi$ is the particle fluence rate.
Diffusion Coefficient for Fluence Rate
"Diffusion Length" is the average distance traveled by a particle, or a thermal neutron in a nuclear reactor, from the point at which it is formed to the point at which it is absorbed.
$L = \sqrt{L^2}$, where $L^2$ is the diffusion area.
Diffusion Length
Applicable units are those of quantitykind:DigitRate
In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a "pure" number, and as such always has a dimension of 1. Dimensionless quantities are widely used in mathematics, physics, engineering, economics, and in everyday life (such as in counting). Numerous well-known quantities, such as $\pi$, $\epsilon$, and $\psi$, are dimensionless. By contrast, non-dimensionless quantities are measured in units of length, area, time, etc. Dimensionless quantities are often defined as products or ratios of quantities that are not dimensionless, but whose dimensions cancel out when their powers are multiplied.
Dimensionless
Dimensionless Ratio
"Displacement" is the shortest distance from the initial to the final position of a point P.
$\Delta r = R_f - R_i$, where $R_f$ is the final position and $R_i$ is the initial position.
Displacement
"Displacement Current" is a quantity appearing in Maxwell's equations that is defined in terms of the rate of change of electric displacement field. Displacement current has the units of electric current density, and it has an associated magnetic field just as actual currents do. However it is not an electric current of moving charges, but a time-varying electric field. In materials, there is also a contribution from the slight motion of charges bound in atoms, dielectric polarization.
$I_D= \int_S J_D \cdot e_n dA$, over a surface $S$, where $J_D$ is displacement current density and $e_n dA$ is the vector surface element.
Applicable units are those of quantitykind:DisplacementCurrent
Displacement Current
$\text{Displacement Current Density}$ is the time rate of change of the $\textit{Electric Flux Density}$. This is a measure of how quickly the electric field changes if we observe it as a function of time. This is different than if we look at how the electric field changes spatially, that is, over a region of space for a fixed amount of time.
$J_D = \frac{\partial D}{\partial t}$, where $D$ is electric flux density and $t$ is time.
Applicable units are those of quantitykind:DisplacementCurrentDensity
Displacement Current Density
Displacement Vector of Ion
Dissipance, or dissipation factor for sound power, is the ratio of dissipated sound power to incident sound power. The dissipation factor (DF) is a measure of loss-rate of energy of a mode of oscillation (mechanical, electrical, or electromechanical) in a dissipative system. It is the reciprocal of quality factor, which represents the quality of oscillation.
$\delta = \frac{P_d}{P_i}$, where $P_d$ is the dissipated sound power, and $P_i$ is the incident sound power.
Applicable units are those of quantitykind:Dissipance
Dissipance
"Distance" is a numerical description of how far apart objects are.
Applicable units are those of quantitykind:Distance
Entfernung
Jarak
Vzdálenost
distance
distancia
distanza
distância
uzaklık
مسافت
距离
Distance Traveled During a Burn
"Donor Density" is the number per volume of donor levels.
Donor Density
"Donor Ionization Energy" is the ionization energy of a donor.
Donor Ionization Energy
"Dose Equivalent" (former), or $\textit{Equivalent Absorbed Radiation Dose}$, usually shortened to $\textit{Equivalent Dose}$, is a computed average measure of the radiation absorbed by a fixed mass of biological tissue, that attempts to account for the different biological damage potential of different types of ionizing radiation. The equivalent dose to a tissue is found by multiplying the absorbed dose, in gray, by a dimensionless "quality factor" $Q$, dependent upon radiation type, and by another dimensionless factor $N$, dependent on all other pertinent factors. N depends upon the part of the body irradiated, the time and volume over which the dose was spread, even the species of the subject.
At the point of interest in tissue, $H = DQ$, where $D$ is the absorbed dose and $Q$ is the quality factor at that point.
Applicable units are those of quantitykind:DoseEquivalent
Dose Equivalent
"Dose Equivalent Quality Factor" is a factor in the caculation and measurement of dose equivalent, by which the absorbed dose is to be weighted in order to account for different biological effectiveness of radiations, for radiation protection purposes.
Applicable units are those of quantitykind:DoseEquivalentQualityFactor
Dose Equivalent Quality Factor
Applicable units are those of quantitykind:DotsPerInch
In fluid dynamics, the drag coefficient is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water.
Drag Coefficient
In fluid dynamics, drag refers to forces which act on a solid object in the direction of the relative fluid flow velocity. Unlike other resistive forces such as dry friction, which is nearly independent of velocity, drag forces depend on velocity. Drag forces always decrease fluid velocity relative to the solid object in the fluid's path.
Drag Force
The temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation.
Dry Bulb Temperature
Dry measures are units of volume used to measure bulk commodities which are not gas or liquid. They are typically used in agriculture, agronomy, and commodity markets to measure grain, dried beans, and dried and fresh fruit; formerly also salt pork and fish. They are also used in fishing for clams, crabs, etc. and formerly for many other substances (for example coal, cement, lime) which were typically shipped and delivered in a standardized container such as a barrel. In the original metric system, the unit of dry volume was the stere, but this is not part of the modern metric system; the liter and the cubic meter ($m^{3}$) are now used. However, the stere is still widely used for firewood.
Applicable units are those of quantitykind:DryVolume
Dry Volume
A duty cycle or power cycle is the fraction of one period in which a signal or system is active.
Applicable units are those of quantitykind:DutyCycle
Duty Cycle
Duv is a metric that is short for Delta u,v (not to be confused with Delta u',v') and describes the distance of a light color point from the black body curve.
Applicable units are those of quantitykind:Duv
Delta u,v
Kinetic (or dynamic) friction occurs when two objects are moving relative to each other and rub together (like a sled on the ground).
Dynamic Friction
$\mu = \frac{F}{N}$, where $F$ is the tangential component of the contact force and $N$ is the normal component of the contact force between two sliding bodies.
Applicable units are those of quantitykind:FrictionCoefficient
Dynamic Friction Coefficient
Dynamic Pressure (indicated with q, or Q, and sometimes called velocity pressure) is the quantity defined by: $q = 1/2 * \rho v^{2}$, where (using SI units), $q$ is dynamic pressure in $pascals$, $\rho$ is fluid density in $kg/m^{3}$ (for example, density of air) and $v $ is fluid velocity in $m/s$.
Dynamic Pressure
A measure of the molecular frictional resistance of a fluid as calculated using Newton's law.
$\tau_{xz} = \eta\frac{dv_x}{dz}$, where $\tau_{xz}$ is shear stress in a fluid moving with a velocity gradient $\frac{dv_x}{dz}$ perpendicular to the plane of shear.
Applicable units are those of quantitykind:DynamicViscosity
Kelikatan dinamik
Viscozitate dinamică
dinamik akmazlık
dinamična viskoznost
dynamic viscosity
dynamische Viskosität
lepkość dynamiczna
viscosidad dinámica
viscosidade dinâmica
viscosità dinamica
viscosité dynamique
viskozita
динамическую вязкость
لزوجة
گرانروی دینامیکی/ویسکوزیته دینامیکی
श्यानता
动力粘度
粘度
viscosità di taglio
Earth Closest Approach Vehicle Velocity
Applicable units are those of quantitykind:EarthquakeMagnitude
The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle. In a two-body problem with inverse-square-law force, every orbit is a Kepler orbit. The eccentricity of this Kepler orbit is a positive number that defines its shape.
Eccentricity Of Orbit
The velocity of an exhaust stream after reduction by effects such as friction, non-axially directed flow, and pressure differences between the inside of the rocket and its surroundings. The effective exhaust velocity is one of two factors determining the thrust, or accelerating force, that a rocket can develop, the other factor being the quantity of reaction mass expelled from the rocket in unit time. In most cases, the effective exhaust velocity is close to the actual exhaust velocity.
Effective Exhaustvelocity
"Effective Mass" is used in the motional equation for electrons in solid state bodies, depending on the wavenumber and corresponding to its velocity and energy level.
$m^* = \hbar^2k(\frac{d\varepsilon}{dk})$, where $\hbar$ is the reduced Planck constant, $k$ is the wavenumber, and $\varepsilon$ is the energy of the electron.
Effective Mass
The "Effective Multiplication Factor" is the multiplication factor for a finite medium.
Applicable units are those of quantitykind:MultiplicationFactor
Effective Multiplication Factor
Efficiency is the ratio of output power to input power.
$\eta = \frac{P_{out}}{P_{in}}$, where $P_{out}$ is the output power and $P_{in}$ is the input power.
Wirkungsgrad
efficiency
efficienza
eficiência
rendement
rendimiento
sprawność
коэффициент полезного действия
كفاءة
効率
效率
rendimento
Applicable units are those of quantitykind:EinsteinCoefficients
Given two atomic states of energy $E_j$ and $E_k$. Let $E_j > E_k$. Assume the atom is bathed in radiation of energy density $u(w)$. Transitions between these states can take place in three different ways. Spontaneous, induced/stimulated emission, and induced absorption. $A_jk$ represents the Einstein transition probability for spontaneous emission.
$\frac{-dN_j}{dt} = A_jkN_j$, where $-dN_j$ is the number of molecules spontaneously leaving the state j for the state k during a time interval of duration $dt$, $N_j$ is the number of molecules in the state j, and $E_j > E_k$.
Applicable units are those of quantitykind:EinsteinTransitionProbability
Einstein Transition Probability
nuclear constant for the special transition where the probability of the absorption, spontaneous emission or induced emission of energy depends on the number of existing quantums of light, expressed as energy density in the wave model of light: energy divided by volume and frequency
atomare Konstante für den speziellen Übergang, wobei die Wahrscheinlichkeit der Absorption, der spontanen Emission und der induzierte Emission von Energie abhängig ist von der Zahl der vorhandenen Lichtquanten, ausgedrückt als Energiedichte im Wellenmodell des Lichtes: Energie durch Volumen und Frequenz
Einstein transition probability for spontaneous or induced emission and absorption
"Electric Charge" is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. Electrically charged matter is influenced by, and produces, electromagnetic fields. The electric charge on a body may be positive or negative. Two positively charged bodies experience a mutual repulsive force, as do two negatively charged bodies. A positively charged body and a negatively charged body experience an attractive force. Electric charge is carried by discrete particles and can be positive or negative. The sign convention is such that the elementary electric charge $e$, that is, the charge of the proton, is positive. The SI derived unit of electric charge is the coulomb.
$dQ = Idt$, where $I$ is electric current.
Cas elektrik
Charge électrique
Elektrický náboj
carga eléctrica
carga elétrica
carica elettrica
electric charge
elektrik yükü
elektrische Ladung
električni naboj
elektromos töltés
onus electricum
sarcină electrică
ładunek elektryczny
Ηλεκτρικό φορτίο
Електрически заряд
Электрический заряд
מטען חשמלי
الشحنة الكهربائية
بار الکتریکی
विद्युत आवेग या विद्युत बहाव
电荷
電荷
cantitate de electricitate
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively.
$\rho = \frac{dQ}{dV}$, where $Q$ is electric charge and $V$ is Volume.
Applicable units are those of quantitykind:ElectricChargeDensity
Electric Charge Density
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively. The respective SI units are $C \cdot $, $m^{-1}$, $C \cdot m^{-2}$ or $C \cdot m^{-3}$.
Applicable units are those of quantitykind:ElectricChargeLineDensity
Electric Charge Line Density
$\rho_l = \frac{dQ}{dl}$, where $Q$ is electric charge and $l$ is length.
Applicable units are those of quantitykind:ElectricChargeLinearDensity
Electric Charge Linear Density
"Electric Charge Per Amount Of Substance" is the charge assocated with a given amount of substance. Un the ISO and SI systems this is $1 mol$.
Applicable units are those of quantitykind:ElectricChargePerAmountOfSubstance
Electric charge per amount of substance
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively. The respective SI units are $C \cdot m^{-1}$, $C \cdot m^{-2}$ or $C \cdot m^{-3}$.
Electric charge per area
"Electric Charge Per Mass" is the charge associated with a specific mass of a substance. In the SI and ISO systems this is $1 kg$.
Applicable units are those of quantitykind:ElectricChargePerMass
Electric Charge Per Mass
$\rho_A = \frac{dQ}{dA}$, where $Q$ is electric charge and $A$ is Area.
Applicable units are those of quantitykind:ElectricChargeSurfaceDensity
Electric Charge Surface Density
Applicable units are those of quantitykind:ElectricChargeVolumeDensity
Electric Charge Volume Density
The quantity kind $\textit{Electric Conductivity}$ or $\textit{Specific Conductance}$ is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity $\sigma$ is defined as the ratio of the electric current density $J$ to the electric field, $E$: $J = \sigma E$. In isotropic materials, conductivity is scalar-valued, however in general, conductivity is a tensor-valued quantity.
Applicable units are those of quantitykind:ElectricConductivity
Kekonduksian elektrik
conducibilità elettrica
conductividad eléctrica
conductivité électrique
condutividade elétrica
electric conductivity
elektrik iletkenliği
elektrische Leitfähigkeit
električna prevodnost
رسانايى الکتريکى/هدایت الکتریکی
电导率
The quantity kind $\textit{Electric Current}$ is the flow (movement) of electric charge. The amount of electric current through some surface, for example, a section through a copper conductor, is defined as the amount of electric charge flowing through that surface over time. Current is a scalar-valued quantity. Electric current is one of the base quantities in the International System of Quantities, ISQ, on which the International System of Units, SI, is based.
"Electric Current" is the flow (movement) of electric charge. The amount of electric current through some surface, for example, a section through a copper conductor, is defined as the amount of electric charge flowing through that surface over time. Current is a scalar-valued quantity. Electric current is one of the base quantities in the International System of Quantities, ISQ, on which the International System of Units, SI, is based.
Applicable units are those of quantitykind:ElectricCurrent
Arus elektrik
Elektrický proud
corrente elettrica
corrente elétrica
corriente eléctrica
curent electric
electric current
elektrik akımı
elektrische Stromstärke
električni tok
elektromos áramerősség
fluxio electrica
intensité de courant électrique
prąd elektryczny
Ένταση ηλεκτρικού ρεύματος
Електрически ток
Сила электрического тока
זרם חשמלי
تيار كهربائي
جریان الکتریکی
विद्युत धारा
电流
電流
"Electric Current Density" is a measure of the density of flow of electric charge; it is the electric current per unit area of cross section. Electric current density is a vector-valued quantity. Electric current, $I$, through a surface $S$ is defined as $I = \int_S J \cdot e_n dA$, where $e_ndA$ is the vector surface element.
$J = \rho v$, where $\rho$ is electric current density and $v$ is volume.
Applicable units are those of quantitykind:ElectricCurrentDensity
Akım yoğunluğu
Densitate de curent
Gęstość prądu elektrycznego
Hustota elektrického proudu
Ketumpatan arus elektrik
densidad de corriente
densidade de corrente elétrica
densità di corrente elettrica
densité de courant
electric current density
elektrische Stromdichte
gostota električnega toka
плотность тока
كثافة التيار
چگالی جریان الکتریکی
धारा घनत्व
电流密度
電流密度
areic electric current
keluasan arus elektrik
Applicable units are those of quantitykind:ElectricCurrentPerAngle
Electric Current per Angle
Applicable units are those of quantitykind:ElectricCurrentPerEnergy
Electric Current per Energy
Applicable units are those of quantitykind:LinearElectricCurrentDensity
Electric Current per Length
"Electric Current per Unit Temperature" is used to express how a current is subject to temperature. Originally used in Wien's Law to describe phenomena related to filaments. One use today is to express how a current generator derates with temperature.
"Electric Current per Temperature" is used to express how a current is subject to temperature. Originally used in Wien's Law to describe phenomena related to filaments. One use today is to express how a current generator derates with temperature.
Applicable units are those of quantitykind:ElectricCurrentPerTemperature
Electric Current per Temperature
"Electric Current Phasor" is a representation of current as a sinusoidal integral quantity using a complex quantity whose argument is equal to the initial phase and whose modulus is equal to the root-mean-square value. A phasor is a constant complex number, usually expressed in exponential form, representing the complex amplitude (magnitude and phase) of a sinusoidal function of time. Phasors are used by electrical engineers to simplify computations involving sinusoids, where they can often reduce a differential equation problem to an algebraic one.
When $i = \hat{I} \cos{(\omega t + \alpha)}$, where $i$ is the electric current, $\omega$ is angular frequence, $t$ is time, and $\alpha$ is initial phase, then $\underline{I} = Ie^{ja}$.
Applicable units are those of quantitykind:ElectricCurrentPhasor
Electric Current Phasor
"Electric Dipole Moment" is a measure of the separation of positive and negative electrical charges in a system of (discrete or continuous) charges. It is a vector-valued quantity. If the system of charges is neutral, that is if the sum of all charges is zero, then the dipole moment of the system is independent of the choice of a reference frame; however in a non-neutral system, such as the dipole moment of a single proton, a dependence on the choice of reference point arises. In such cases it is conventional to choose the reference point to be the center of mass of the system or the center of charge, not some arbitrary origin. This convention ensures that the dipole moment is an intrinsic property of the system. The electric dipole moment of a substance within a domain is the vector sum of electric dipole moments of all electric dipoles included in the domain.
$E_p = -p \cdot E$, where $E_p$ is the interaction energy of the molecule with electric dipole moment $p$ and an electric field with electric field strength $E$. $p = q(r_+ - r_i)$, where $r_+$ and $r_-$ are the position vectors to carriers of electric charge $a$ and $-q$, respectively.
Applicable units are those of quantitykind:ElectricDipoleMoment
Dipólový moment
Momen dwikutub elektrik
electric dipole moment
elektrik dipol momenti
elektrisches Dipolmoment
elektryczny moment dipolowy
moment dipolaire
moment electric dipolar
momento de dipolo eléctrico
momento di dipolo elettrico
momento do dipolo elétrico
Электрический дипольный момент
عزم ثنائي قطب
گشتاور دوقطبی الکتریکی
विद्युत द्विध्रुव आघूर्ण
电偶极矩
電気双極子
Quartic Electric Dipole Moment per Cubic Energy
In a dielectric material the presence of an electric field E causes the bound charges in the material (atomic nuclei and their electrons) to slightly separate, inducing a local electric dipole moment. The Electric Displacement Field, $D$, is a vector field that accounts for the effects of free charges within such dielectric materials. This describes also the charge density on an extended surface that could be causing the field.
$D = \epsilon_0 E + P$, where $\epsilon_0$ is the electric constant, $E$ is electric field strength, and $P$ is electric polarization.
Electric Displacement
Electric Displacement Field
The space surrounding an electric charge or in the presence of a time-varying magnetic field has a property called an electric field. This electric field exerts a force on other electrically charged objects. In the idealized case, the force exerted between two point charges is inversely proportional to the square of the distance between them. (Coulomb's Law).
Applicable units are those of quantitykind:ElectricField
Electric Field
$\textit{Electric Field Strength}$ is the magnitude and direction of an electric field, expressed by the value of $E$, also referred to as $\color{indigo} {\textit{electric field intensity}}$ or simply the electric field.
$\mathbf{E} = \mathbf{F}/q$, where $\mathbf{F}$ is force and $q$ is electric charge, of a test particle at rest.
Applicable units are those of quantitykind:ElectricFieldStrength
Elektromos mező
Kekuatan medan elektrik
câmp electric
electric field strength
elektrické pole
elektriksel alan kuvveti
elektrische Feldstärke
intensidad de campo eléctrico
intensidade de campo elétrico
intensità di campo elettrico
intensité de champ électrique
jakost električnega polja
natężenie pola elektrycznego
Ηλεκτρικό πεδίο
Електрично поле
Напряженность электрического поля
שדה חשמלי
شدة المجال الكهربائي
شدت میدان الکتریکی
विद्युत्-क्षेत्र
電場
電界強度
"Electric Flux" through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field. Electric Flux is a scalar-valued quantity.
$\Psi = \int_S D \cdot e_n dA$, over a surface $S$, where $D$ is electric flux density and $e_n dA$ is the vector surface element.
Applicable units are those of quantitykind:ElectricFlux
Electric Flux
$\textit{Electric Flux Density}$, also referred to as $\textit{Electric Displacement}$, is related to electric charge density by the following equation: $\text{div} \; D = \rho$, where $\text{div}$ denotes the divergence.
$\mathbf{D} = \epsilon_0 E + P$, where $\epsilon_0$ is the electric constant, $\mathbf{E} $ is electric field strength, and $P$ is electric polarization.
Densidad de flujo eléctrico
Elektrická indukce
Induction électrique
Inducție electrică
Indukcja elektryczna
Ketumpatan fluks elektrik
campo de deslocamento elétrico
electric flux density
elektrik akı yoğunluğu
elektrische Flussdichte
spostamento elettrico
Электрическая индукция
إزاحة كهربائية
چگالی شار الکتریکی
電位移
電束密度
anjakan
densité de flux électrique
displacement
elektrische Induktion
elektrische Verschiebung
induzione elettrica
yer değiştirme
"Electric Polarizability" is the relative tendency of a charge distribution, like the electron cloud of an atom or molecule, to be distorted from its normal shape by an external electric field, which is applied typically by inserting the molecule in a charged parallel-plate capacitor, but may also be caused by the presence of a nearby ion or dipole.
$\alpha_{i,j} = \frac{\partial p_i}{\partial E_j}$, where $p_i$ is the cartesian component along the $i-axis$ of the electric dipole moment induced by the applied electric field strength acting on the molecule, and $E_j$ is the component along the $j-axis$ of this electric field strength.
Applicable units are those of quantitykind:ElectricPolarizability
Kepengkutuban elektrik
Kutuplanabilirlik
Polarisabilité
Polarizabilidad
Polarizovatelnost
Polaryzowalność
electric polarizability
elektrische Polarisierbarkeit
polarizabilidade
polarizzabilità elettrica
Поляризуемость
قابلية استقطاب
قطبیت پذیری الکتریکی
分極率
極化性
"Electric Polarization" is the relative shift of positive and negative electric charge in opposite directions within an insulator, or dielectric, induced by an external electric field. Polarization occurs when an electric field distorts the negative cloud of electrons around positive atomic nuclei in a direction opposite the field. This slight separation of charge makes one side of the atom somewhat positive and the opposite side somewhat negative. In some materials whose molecules are permanently polarized by chemical forces, such as water molecules, some of the polarization is caused by molecules rotating into the same alignment under the influence of the electric field. One of the measures of polarization is electric dipole moment, which equals the distance between the slightly shifted centres of positive and negative charge multiplied by the amount of one of the charges. Polarization P in its quantitative meaning is the amount of dipole moment p per unit volume V of a polarized material, P = p/V.
$P =\frac{dp}{dV}$, where $p$ is electic charge density and $V$ is volume.
Applicable units are those of quantitykind:ElectricPolarization
electric polarization
elektrische Polarisation
polarisation électrique
polarización eléctrica
polarização eléctrica
polarizzazione elettrica
polaryzacja elektryczna
электрическая поляризация
إستقطاب كهربائي
電気分極
The Electric Potential is a scalar valued quantity associated with an electric field. The electric potential $\phi(x)$ at a point, $x$, is formally defined as the line integral of the electric field taken along a path from x to the point at infinity. If the electric field is static, that is time independent, then the choice of the path is arbitrary; however if the electric field is time dependent, taking the integral a different paths will produce different results.
$-\text{grad} \; V = E + \frac{\partial A}{\partial t}$, where $E$ is electric field strength, $A$ is magentic vector potential and $t$ is time.
Applicable units are those of quantitykind:ElectricPotential
Keupayaan elektrik
electric potential
elektrický potenciál
elektrik potansiyeli
elektrisches Potenzial
električni potencial
elektromos feszültség , elektromos potenciálkülönbség
potencial eléctrico
potencial elétrico
potencjał elektryczny
potentiel électrique
potenziale elettrico
potențial electric
tensio electrica
Електрически потенциал
электростатический потенциал
מתח חשמלי (הפרש פוטנציאלים)
كمون كهربائي
پتانسیل الکتریکی
विद्युत विभव
電位
電勢
vis electromotrix
"Electric Potential Difference" is a scalar valued quantity associated with an electric field.
$V_{ab} = \int_{r_a(C)}^{r_b} (E +\frac{\partial A}{\partial t}) $, where $E$ is electric field strength, $A$ is magentic vector potential, $t$ is time, and $r$ is position vector along a curve C from a point $a$ to $b$.
Applicable units are those of quantitykind:ElectricPotentialDifference
Voltan Perbezaan keupayaan elektrik
diferență de potențial electric
differenza di potenziale elettrico
electric potential difference
elektrické napětí
elektrische Spannung
električna napetost
gerilim
napięcie elektryczne
tension électrique
tensión eléctrica
tensão elétrica (diferença de potencial)
электрическое напряжение
جهد كهربائي
ولتاژ/ اختلاف پتانسیل
विभवांतर
電圧
電壓
ketegangan
tension
tensione elettrica
tensiune
"Electric Power" is the rate at which electrical energy is transferred by an electric circuit. In the simple case of direct current circuits, electric power can be calculated as the product of the potential difference in the circuit (V) and the amount of current flowing in the circuit (I): $P = VI$, where $P$ is the power, $V$ is the potential difference, and $I$ is the current. However, in general electric power is calculated by taking the integral of the vector cross-product of the electrical and magnetic fields over a specified area.
$p = ui$, where $u$ is instantaneous voltage and $i$ is instantaneous electric current.
Wirkleistung
electric power
moc czynna
potencia activa
potenza attiva
potência activa
puissance active
القدرة الفعالة
有功功率
有効電力
Electric Propulsion Propellant Mass
The Electric Quadrupole Moment is a quantity which describes the effective shape of the ellipsoid of nuclear charge distribution. A non-zero quadrupole moment Q indicates that the charge distribution is not spherically symmetric. By convention, the value of Q is taken to be positive if the ellipsoid is prolate and negative if it is oblate. In general, the electric quadrupole moment is tensor-valued.
Applicable units are those of quantitykind:ElectricQuadrupoleMoment
Momen kuadrupol elektrik
electric quadrupole moment
elektrik kuadrupol momenti
elektrisches Quadrupolmoment
elektryczny moment kwadrupolowy
moment quadrupolaire électrique
momento de cuadrupolo eléctrico
momento de quadrupolo elétrico
momento di quadrupolo elettrico
Электрический квадрупольный момент
گشتاور چهار قطبی الکتریکی
四極子
电四极矩
"Electric Susceptibility" is the ratio of electric polarization to electric field strength, normalized to the electric constant. The definition applies to an isotropic medium. For an anisotropic medium, electric susceptibility is a second order tensor.
$\chi = \frac{P}{(\epsilon_0 E)}$, where $P$ is electric polorization, $\epsilon_0$ is the electric constant, and $E$ is electric field strength.
Applicable units are those of quantitykind:ElectricSusceptibility
electric susceptibility
elektrische Suszeptibilität
podatność elektryczna
susceptibilidad eléctrica
susceptibilidade eléctrica
susceptibilité électrique
suscettività elettrica
электрическая восприимчивость
المتأثرية الكهربائية، سرعة التأثر الكهربائية
電気感受率
susceptywność elektryczna
диэлектрическая восприимчивость
measure of the capability of a material to conduct electric current, the value of which is defined as the reciprocal of the electrical resistance
Maß für die Fähigkeit eines Stoffes, den elektrischen Strom zu leiten, das wertmäßig definiert ist als Kehrwert des elektrischen Widerstandes
Applicable units are those of quantitykind:ElectricalConductance
electrical conductance
Applicable units are those of quantitykind:SpecificPower
Electrical Power To Mass Ratio
different properties of materials which impede the electrical current in its movement when the free charged particles in these materials are set in motion by electrical fields and/or electrical potentials
unterschiedlich ausgeprägte Eigenschaft von Stoffen, den elektrischen Strom in seiner Bewegung zu hemmen, wenn die freien Ladungsträger in diesen Stoffen durch elektrische Felder und/oder elektrische Potentiale in Bewegung gesetzt werden
Applicable units are those of quantitykind:ElectricalResistance
electrical resistance
"Electrolytic Conductivity" of an electrolyte solution is a measure of its ability to conduct electricity.
$x = \frac{J}{E}$, where $J$ is the electrolytic current density and $E$ is the electric field strength.
Applicable units are those of quantitykind:ElectrolyticConductivity
Electrolytic Conductivity
$\textit{Electromagnetic Energy Density}$, also known as the $\color{indigo} {\text{Volumic Electromagnetic Energy}}$, is the energy associated with an electromagnetic field, per unit volume of the field.
$w = (1/2) ( \mathbf{E} \cdot \mathbf{D} + \mathbf{B} \cdot \mathbf{H})$, where $\mathbf{E}$ is electric field strength, $\mathbf{D}$ is electric flux density, $\mathbf{M}$ is magnetic flux density, and $\mathbf{H}$ is magnetic field strength.
Applicable units are those of quantitykind:ElectromagneticEnergyDensity
Electromagnetic Energy Density
$\textit{Permeability}$ is the degree of magnetization of a material that responds linearly to an applied magnetic field. In general permeability is a tensor-valued quantity. The definition given applies to an isotropic medium. For an anisotropic medium permeability is a second order tensor. In electromagnetism, permeability is the measure of the ability of a material to support the formation of a magnetic field within itself. In other words, it is the degree of magnetization that a material obtains in response to an applied magnetic field. Magnetic permeability is typically represented by the Greek letter $\mu$. The term was coined in September, 1885 by Oliver Heaviside. The reciprocal of magnetic permeability is $\textit{Magnetic Reluctivity}$.
$\mu = \frac{B}{H}$, where $B$ is magnetic flux density, and $H$ is magnetic field strength.
Applicable units are those of quantitykind:ElectromagneticPermeability
Permeability
$\textit{Electromagnetic Permeability Ratio}$ is the ratio of the electromagnetic permeability of a specific medium to the electromagnetic permeability of free space.
The ratio of the electromagnetic permeability of a specific medium to the electromagnetic permeability of free space.
Applicable units are those of quantitykind:ElectromagneticPermeabilityRatio
Electromagnetic Permeability Ratio
$\textit{Electromagnetic Wave Phase Speed}$ is the ratio of angular velocity and wavenumber.
$c = w/k$ where $w$ is angular velocity and $k$ is angular wavenumber.
"Electromagnetic Wave Phase Speed" is the ratio of angular velocity and wavenumber.
Applicable units are those of quantitykind:ElectromagneticWavePhaseSpeed
Electromagnetic Wave Phase Speed
In physics, $\textit{Electromotive Force}$, or most commonly $emf$ (seldom capitalized), or (occasionally) electromotance is that which tends to cause current (actual electrons and ions) to flow. More formally, $emf$ is the external work expended per unit of charge to produce an electric potential difference across two open-circuited terminals. $\textit{Electromotive Force}$ is deprecated in the ISO System of Quantities.
Applicable units are those of quantitykind:EnergyPerElectricCharge
Daya gerak elektrik
Elektromotor kuvvet
Elektromotorické napětí
electromotive force
elektromotorische Kraft
elektromotorna sila
force électromotrice
forza elettromotrice
força eletromotriz
forță electromotoare
fuerza electromotriz
siła elektromotoryczna
электродвижущая сила
قوة محركة كهربائية
نیروی محرک الکتریکی
विद्युतवाहक बल
起電力
電動勢
$\textit{Electron Affinity}$ is the energy difference between an electron at rest at infinity and an electron at the lowest level of the conduction band in an insulator or semiconductor. The amount of energy released when an electron is added to a neutral atom or molecule to form a negative ion.
"Electron Affinity" is the energy difference between an electron at rest at infinity and an electron at the lowest level of the conduction band in an insulator or semiconductor. The the amount of energy released when an electron is added to a neutral atom or molecule to form a negative ion.
Electron Affinity
$\textit{Electron Density}$ is the number of electrons per volume in conduction bands. It is the measure of the probability of an electron being present at a specific location.
"Electron Density" is the number of electrons per volume in conduction bands. It is the measure of the probability of an electron being present at a specific location.
Electron Density
$\textit{Electron Mean Free Path}$ is the mean free path of electrons.
"Electron Mean Free Path" is the mean free path of electrons.
Electron Mean Free Path
Applicable units are those of quantitykind:Mobility
$\textit{Electron Radius}$, also known as the Lorentz radius or the Thomson scattering length, is based on a classical (i.e., non-quantum) relativistic model of the electron.
$r_e = \frac{e^2}{4\pi m_e c_0^2}$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, item $m_e$ is the rest mass of electrons, and $c_0$ is the speed of light in vacuum.
"Electron Radius", also known as the Lorentz radius or the Thomson scattering length, is based on a classical (i.e., non-quantum) relativistic model of the electron.
Electron Radius
Height measurement relative to the Normaal Amsterdams Peil (NAP) (en: Amsterdam Ordnance System). Being a form of gravity related height
Applicable units are those of quantitykind:ElevationRelativeToNAP
Elevation relative to NAP
Hoogte ten opzichte van NAP
Velocity at apogee for an elliptical orbit velocity
Elliptical Orbit Apogee Velocity
Elliptical Orbit Perigee Velocity
Emissivity of a material (usually written $\varepsilon$ or e) is the relative ability of its surface to emit energy by radiation.
$\varepsilon = \frac{M}{M_b}$, where $M$ is the radiant exitance of a thermal radiator and $M_b$ is the radiant exitance of a blackbody at the same temperature.
Applicable units are those of quantitykind:Emissivity
Emissivity
Energy is the quantity characterizing the ability of a system to do work.
Energie
Tenaga
energia , munka , hő
energia
energie
energija
energy
enerji
énergie
Έργο - Ενέργεια
Енергия
Энергия
אנרגיה ועבודה
الطاقة
انرژی
ऊर्जा
エネルギー
能量
saved quantity of energy which can be used physically or chemically
gespeicherte Energiemenge, die physikalisch oder chemisch nutzbar ist
energy content
Energy density is defined as energy per unit volume. The SI unit for energy density is the joule per cubic meter.
Applicable units are those of quantitykind:EnergyDensity
Energy Density
"Energy Density of States" refers to electrons or other entities, e.g. phonons. It can, for example, refer to amount of substance instead of volume.
$\rho(E) = n_E(E) = \frac{dN(E)}{dE}\frac{1}{V}$, where $N(E)$ is the total number of states with energy less than $E$, and $V$ is the volume.
Applicable units are those of quantitykind:EnergyDensityOfStates
Energy Density of States
Energy expenditure is dependent on a person's sex, metabolic rate, body-mass composition, the thermic effects of food, and activity level. The approximate energy expenditure of a man lying in bed is $1.0\,kilo\,calorie\,per\,hour\,per\,kilogram$. For slow walking (just over two miles per hour), $3.0\,kilo\,calorie\,per\,hour\,per\,kilogram$. For fast steady running (about 10 miles per hour), $16.3\,kilo\,calorie\,per\,hour\,per\,kilogram$. Females expend about 10 per cent less energy than males of the same size doing a comparable activity. For people weighing the same, individuals with a high percentage of body fat usually expend less energy than lean people, because fat is not as metabolically active as muscle.
Energy Expenditure
"Energy Fluence" can be used to describe the energy delivered per unit area
$\Psi = \frac{dR}{dA}$, where $dR$ describes the sum of radiant energies, exclusive of rest energy, of all particles incident on a small spherical domain, and $dA$ describes the cross-sectional area of that domain.
Applicable units are those of quantitykind:EnergyFluence
Energy Fluence
"Energy Fluence Rate" can be used to describe the energy fluence delivered per unit time.
$\Psi = \frac{d\Psi}{dt}$, where $d\Psi$ is the increment of the energy fluence during an infinitesimal time interval with duration $dt$.
Energy Fluence Rate
The "Energy Imparted", is a physical quantity associated with the energy delivered to a particular volume of matter by all the directly and indirectly ionizing particles (i.e. charged and uncharged) entering that volume.
For ionizing radiation in the matter in a given 3D domain, $\varepsilon = \sum_i \varepsilon_i$, where the energy deposit, $\varepsilon_i$ is the energy deposited in a single interaction $i$, and is given by $\varepsilon_i = \varepsilon_{in} - \varepsilon_{out} + Q$, where $\varepsilon_{in}$ is the energy of the incident ionizing particle, excluding rest energy, $\varepsilon_{out}$ is the sum of the energies of all ionizing particles leaving the interaction, excluding rest energy, and $Q$ is the change in the rest energies of the nucleus and of all particles involved in the interaction.
Energy Imparted
The internal energy is the total energy contained by a thermodynamic system. It is the energy needed to create the system, but excludes the energy to displace the system's surroundings, any energy associated with a move as a whole, or due to external force fields. Internal energy has two major components, kinetic energy and potential energy. The internal energy (U) is the sum of all forms of energy (Ei) intrinsic to a thermodynamic system: $ U = \sum_i E_i $
Notranja energija
Tenaga dalaman
energia interna
energia wewnętrzna
energie internă
energía interna
innere Energie
internal energy
vnitřní energie
énergie interne
İç enerji
внутренняя энергия
انرژی درونی
طاقة داخلية
आन्तरिक ऊर्जा
内能
内部エネルギー
energia termodinamica
tenaga termodinamik
thermodynamic energy
thermodynamische Energie
énergie thermodynamique
The kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Energie cinetică
Kinetik enerji
Tenaga kinetik
energia cinetica
energia cinética
energia kinetyczna
energía cinética
kinetic energy
kinetická energie
kinetische Energie
énergie cinétique
кинетическая энергия
انرژی جنبشی
طاقة حركية
गतिज ऊर्जा
动能
運動エネルギー
"Energy Level" is the ionization energy for an electron at the Fermi energy in the interior of a substance.
Energy Level
Energy per unit area is a measure of the energy either impinging upon or generated from a given unit of area. This can be a measure of the "toughness" of a material, being the amount of energy that needs to be applied per unit area of a crack to cause it to fracture. This is a constant for a given material..
Applicable units are those of quantitykind:EnergyPerArea
Energy per Area
"Energy Per Area Electric Charge" is the amount of electric energy associated with a unit of area.
Applicable units are those of quantitykind:EnergyPerAreaElectricCharge
Energy Per Area Electric Charge
Voltage is a representation of the electric potential energy per unit charge. If a unit of electrical charge were placed in a location, the voltage indicates the potential energy of it at that point. In other words, it is a measurement of the energy contained within an electric field, or an electric circuit, at a given point. Voltage is a scalar quantity. The SI unit of voltage is the volt, such that $1 volt = 1 joule/coulomb$.
Energy per electric charge
"Energy Per Square Magnetic Flux Density" is a measure of energy for a unit of magnetic flux density.
Energy Per Square Magnetic Flux Density
Applicable units are those of quantitykind:EnergyPerMassAmountOfSubstance
Energy and work per mass amount of substance
Applicable units are those of quantitykind:EnergyPerSquareMagneticFluxDensity
Applicable units are those of quantitykind:EnergyPerTemperature
Energy per temperature
Square Energy
In thermodynamics, $\textit{enthalpy}$ is the sum of the internal energy $U$ and the product of pressure $p$ and volume $V$ of a system. The characteristic function (also known as thermodynamic potential) $\textit{enthalpy}$ used to be called $\textit{heat content}$, which is why it is conventionally indicated by $H$. The specific enthalpy of a working mass is a property of that mass used in thermodynamics, defined as $h=u+p \cdot v$, where $u$ is the specific internal energy, $p$ is the pressure, and $v$ is specific volume. In other words, $h = H / m$ where $m$ is the mass of the system. The SI unit for $\textit{Specific Enthalpy}$ is $\textit{joules per kilogram}$
$H = U + pV$, where $U$ is internal energy, $p$ is pressure and $V$ is volume.
Entalpi
Entalpie
Enthalpie
entalpia
entalpie
entalpija
entalpía
enthalpie
enthalpy
энтальпия
آنتالپی
محتوى حراري
पूर्ण ऊष्मा
エンタルピー
When a small amount of heat $dQ$ is received by a system whose thermodynamic temperature is $T$, the entropy of the system increases by $dQ/T$, provided that no irreversible change takes place in the system.
Applicable units are those of quantitykind:Entropy
Entropi
Entropie
entropi
entropia
entropie
entropija
entropy
entropía
Энтропия
آنتروپی
إنتروبيا
एन्ट्रॉपी
エントロピー
The "Equlilbrium Constant", also known as the thermodynamic equilibrium constant, is an expression that gives us a ratio of the products and reactants of a reaction at equilibrium with respect to a specific unit.
$K^\Theta = \Pi_B(\lambda_B^\Theta)^{-\nu_B}$, where $\Pi_B$ denotes the product for all substances $B$, $\lambda_B^\Theta$ is the standard absolute activity of substance $B$, and $\nu_B$ is the stoichiometric number of the substance $B$.
Applicable units are those of quantitykind:EquilibriumConstant
Equilibrium Constant
Kc = ΠB(cB)νB for solutions
Kc = ΠB(cB)νB für Lösungen
equilibrium constant based on concentration
Kp = ΠB(pB)νB for gases
Kp = ΠB(pB)νB für Gase
equilibrium constant based on pressure
$K_c = \Pi_B(c_B)^{-\nu_B}$, for solutions
The unit is unit:MOL-PER-M3 raised to the N where N is the summation of stoichiometric numbers. I don't know what to do with this.
Equilibrium Constant on Concentration Basis
Equilibrium Constant on Pressure Basis
"Equilibrium Position Vector of Ion" is the position vector of a particle in equilibrium.
Equilibrium Position Vector of Ion
ratio of equivalence dose within an appropriately small interval to this interval, calculated as the differential quotient: q • D = q • ∂D/∂t as a measure of the current radiation exposure
Quotient aus der Äquivalenzdosis in einer angemessenen kleinen Zeitspanne und dieser Zeitspanne, berechenbar als Differentialquotient: q • D = q • ∂D/∂t als Maß für die aktuelle Strahlenbelastung
equivalence dose output
In a diffuse sound field, the Equivalent Absorption Area is that area of a surface having an absorption factor equal to 1, which, if diffraction effects are neglected, would, in the same diffuse sound field, absorb the same power.
Equivalent absorption area
"Equivalent Concentration" is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction, per volume.
The amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction, per volume.
Equivalent Concentration
"Equivalent Density" is the mass of a substance that reacts with (or is equivalent to) an arbitrary mass of another substance in a given chemical reaction, per volume.
Equivalent Density
"Mass Equivalent" is the mass of a substance that reacts with (or is equivalent to) an arbitrary mass of another substance in a given chemical reaction.
"Molar Equivalent" is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction.
Molar Equivalent
Evaporative Heat Transfer
"Evaporative Heat Transfer Coefficient" is the areic heat transfer coefficient multiplied by the water vapor pressure difference between skind and the environment, and by the exchange area.
Applicable units are those of quantitykind:EvaporativeHeatTransferCoefficient
"Exchange Integral" is the constituent of the interaction energy between the spins of adjacent electrons in matter arising from the overlap of electron state functions.
Applicable units are those of quantitykind:ExchangeIntegral
Exchange Integral
Exhaust Gas Mean Molecular Weight
Specific heat of exhaust gases at constant pressure.
Applicable units are those of quantitykind:SpecificHeatCapacity
Exhaust Gases Specific Heat
Applicable units are those of quantitykind:Power
Exhaust Stream Power
Cross-sectional area at exit plane of nozzle
Exit Plane Cross-sectional Area
Exit Plane Pressure
Exit Plane Temperature
Expansion Ratio
"Exposure" reflects the extent of ionization events taking place when air is irradiated by ionizing photons (gamma radiation and/or x rays). In photography, exposure is the amount of light allowed to fall on each area unit of a photographic medium (photographic film or image sensor) during the process of taking a photograph. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance in a specified region.
For X-or gamma radiation, $X = \frac{dQ}{dm}$, where $dQ$ is the absolute value of the mean total electric charge of the ions of the same sign produced in dry air when all the electrons and positrons liberated or created by photons in an element of air are completely stopped in air, and $dm$ is the mass of that element.
Exposure
measure of an electromagnetic radiation field to which a material is exposed in terms of ionization, which the radiation produces as reference material air, expressed as ratio of ∂Q and ∂m, where ∂Q is the absolute value of the total charge of the ions of one sign produced in the air of mass ∂m when all of the electrons (and positrons) liberated by photons in this mass element are completely stopped
Maß für die Wirkung eines elektromagnetischen Feldes auf Materie in Form der Ionisation, die die Strahlung im Referenzmaterial Luft erzeugt, ausgedrückt als Quotient aus ∂Q und ∂m, wobei ∂Q der Absolutwert der gesamten elektrischen Ladung der Ionen eines Vorzeichens ist, die in Luft der Masse ∂m gebildet wird, wenn in diesem Massenelement alle Elektronen (und Positronen), die durch die Photonen freigesetzt werden, komplett gestoppt werden
exposure of ionizing radiation
"Exposure Rate" expresses the rate of charge production per unit mass of air and is commonly expressed in roentgens per hour (R/h) or milliroentgens per hour (mR/h).
$\dot{X} = \frac{dX}{dt}$, where $X$ is the increment of exposure during time interval with duration $t$.
Applicable units are those of quantitykind:ExposureRate
Exposure Rate
ratio between the exposure of ionizing radiation dJ in a time interval and the duration dt of this interval
Quotient Ionendosis dJ in einem Zeitintervall durch Dauer dt dieses Zeitintervalls
exposure rate of ionizing radiation
In physical chemistry, the "Extent of Reaction" is a quantity that measures the extent in which the reaction proceeds.
$dn_B = \nu_B d\xi$, where $n_B$ is the amount of substance $B$ and $\nu_B$ is the stoichiometric number of substance $B$.
Applicable units are those of quantitykind:ExtentOfReaction
Extent of Reaction
A quantity of propellant, at a nominal mixture ratio, along with fuel bias that is set aside from total propellant loaded to cover for statistical variations of flight hardware characteristics and environment conditions on the day of launch. The launch vehicle is designed to accommodate the maximum FPR loading.
Flight Performance Reserve Propellant Mass
An additional quantity of fuel to ensure depletion of high-weight oxidizer before fuel for systems with high-oxidizer mixing ratios (e.g., 6:1). This practice allows for more efficient propellant utilization. Denoted as a percentage.
Fuel Bias
quantity whose zero point is defined by the temperature of a mixture of ice, water and ammonium chloride (-17.8 °C) and its fixed points on the Fahrenheit scale are 32 °F (melting point of ice) and 212 °F (boiling point of water)
Größe, deren Nullpunkt durch die Mischungstemperatur von Eis, Wasser und Salmiak (Ammoniumchlorid) definiert ist (-17,8 °C) und deren Fixpunkte auf der Fahrenheit-Skala 32 °F (Schmelztemperatur von Eis) und 212 °F (Siedetemperatur des Wassers) sind
Fahrenheit temperature
limiting value - if it exists - of the ratio between the conditional probability that the fault time t of a resource will fall within a defined interval (t, t + Δt), and the duration of this interval if Δt approaches zero and the unit is in an operational state at the beginning of the interval
Grenzwert - falls er existiert - des Quotienten aus der bedingten Wahrscheinlichkeit, dass der Ausfallzeitpunkt t eines Betriebsmittels in ein gegebenes Zeitintervall (t, t + Δt) fällt, und der Dauer dieses Zeitintervalls, wenn Δt gegen null geht und das Betriebsmittel sich zu Beginn des Zeitintervalls im betriebsfähigen Zustand befindet
failure rate
"Fast Fission Factor" in an infinite medium, is the ratio of the mean number of neutrons produced by fission due to neutrons of all energies to the mean number of neutrons produced by fissions due to thermal neutrons only.
Applicable units are those of quantitykind:FastFissionFactor
Fast Fission Factor
Applicable units are those of quantitykind:FermiAngularWavenumber
Fermi Angular Wavenumber
"Fermi Energy" in a metal is the highest occupied energy level at zero thermodynamic temperature.
Fermi Energy
"Fermi Temperature" is the temperature associated with the Fermi energy.
$T_F = \frac{E_F}{k}$, where $E_F$ is the Fermi energy and $k$ is the Boltzmann constant.
Fermi Temperature
Final Or Current Vehicle Mass
The first moment of area is the summation of area times distance to an axis. It is a measure of the distribution of the area of a shape in relationship to an axis.
First Moment of Area
Mass ratio for the first stage of a multistage launcher.
Applicable units are those of quantitykind:MassRatio
First Stage Mass Ratio
A time that quantifies how long its takes to transform 50% of a substance's total concentration from any concentration point in time in fish via whole body metabolic reactions.
Applicable units are those of quantitykind:FishBiotransformationHalfLife
Fish Biotransformation Half Life
Fission Core Radius To Height Ratio
Fission Fuel Utilization Factor
The number of fission neutrons produced per absorption in the fuel.
Fission Multiplication Factor
A temperature that is the lowest one at which the vapors of a volatile material will ignite if exposed to an ignition source. It is frequently used to characterize fire hazards and distinguish different flammable fuels.
Applicable units are those of quantitykind:FlashPoint
Flash Point Temperature
Flight path angle is defined in two different ways. To the aerodynamicist, it is the angle between the flight path vector (where the airplane is going) and the local atmosphere. To the flight crew, it is normally known as the angle between the flight path vector and the horizon, also known as the climb (or descent) angle.
Flight Path Angle
Applicable units are those of quantitykind:FloatingPointCalculationCapability
fluidity of a material as complement of the dynamic viscosity
Fließvermögen eines Stoffes als Kehrwert der dynamischen Viskosität
Applicable units are those of quantitykind:Fluidity
fluidity
Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. [Wikipedia]
Applicable units are those of quantitykind:Flux
Flux
"Force" is an influence that causes mass to accelerate. It may be experienced as a lift, a push, or a pull. Force is defined by Newton's Second Law as $F = m \times a $, where $F$ is force, $m$ is mass and $a$ is acceleration. Net force is mathematically equal to the time rate of change of the momentum of the body on which it acts. Since momentum is a vector quantity (has both a magnitude and direction), force also is a vector quantity.
$F = \frac{dp}{dt}$, where $F$ is the resultant force acting on a body, $p$ is momentum of a body, and $t$ is time.
Daya
Kraft
Síla
erő
force
forza
força
forță
fuerza
kuvvet
sila
siła
vis
Δύναμη
Сила
сила
כוח
نیرو
وحدة القوة في نظام متر كيلوغرام ثانية
भार
The 'magnitude' of a force is its 'size' or 'strength', regardless of the direction in which it acts.
Force Magnitude
Applicable units are those of quantitykind:ForcePerAngle
Force per Angle
The force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)
Force Per Area
Applicable units are those of quantitykind:ForcePerAreaTime
Force Per Area Time
The electric field depicts the force exerted on other electrically charged objects by the electrically charged particle the field is surrounding. The electric field is a vector field with SI units of newtons per coulomb ($N C^{-1}$) or, equivalently, volts per metre ($V m^{-1}$ ). The SI base units of the electric field are $kg m s^{-3} A^{-1}$. The strength or magnitude of the field at a given point is defined as the force that would be exerted on a positive test charge of 1 coulomb placed at that point
Applicable units are those of quantitykind:ForcePerElectricCharge
Force per Electric Charge
Applicable units are those of quantitykind:ForcePerLength
Force per Length
"Frequency" is the number of occurrences of a repeating event per unit time. The repetition of the events may be periodic (that is. the length of time between event repetitions is fixed) or aperiodic (i.e. the length of time between event repetitions varies). Therefore, we distinguish between periodic and aperiodic frequencies. In the SI system, periodic frequency is measured in hertz (Hz) or multiples of hertz, while aperiodic frequency is measured in becquerel (Bq). In spectroscopy, $\nu$ is mostly used. Light passing through different media keeps its frequency, but not its wavelength or wavenumber.
$f = 1/T$, where $T$ is a period. Alternatively, $\nu = 1/T$
Frekuensi
Frekvence
Frequenz
częstotliwość
frecuencia
frecvență
frekans
frekvenca
frekvencia
frequency
frequentia
frequenza
frequência
fréquence
Συχνότητα
Частота
Честота
תדירות
التردد لدى نظام الوحدات الدولي
بسامد
आवृत्ति
周波数
频率
"Friction" is the force of two surfaces In contact, or the force of a medium acting on a moving object (that is air on an aircraft). When contacting surfaces move relative to each other, the friction between the two objects converts kinetic energy into thermal energy.
Friction
"Friction Coefficient" is the ratio of the force of friction between two bodies and the force pressing them together
Friction Coefficient
"Fugacity" of a real gas is an effective pressure which replaces the true mechanical pressure in accurate chemical equilibrium calculations. It is equal to the pressure of an ideal gas which has the same chemical potential as the real gas.
Applicable units are those of quantitykind:Fugacity
Fugasiti
Fugazität
Lotność
fugacidad
fugacidade
fugacita
fugacitate
fugacity
fugacità
fugacité
fügasite
انفلاتية
بی‌دوامی
フガシティー
逸度
"Fundamental Lattice vector" are fundamental translation vectors for the crystal lattice.
Fundamental Lattice vector
"Fundamental Reciprocal Lattice Vector" are fundamental, or primary, translation vectors the reciprocal lattice.
Fundamental Reciprocal Lattice Vector
The "g-Factor of Nucleus" is associated with the spin and magnetic moments of protons, neutrons, and many nuclei.
$g = \frac{\mu}{I\mu_B}$, where $\mu$ is the magnitude of magnetic dipole moment, $I$ is the nuclear angular momentum quantum number, and $\mu_B$ is the Bohr magneton.
Applicable units are those of quantitykind:GFactorOfNucleus
g-Factor of Nucleus
The sum of a rocket's inert mass and usable fluids and gases at sea level.
Gross Lift-Off Weight
A general term used to denote an increase in signal power or signal strength in transmission from one point to another. Gain is usually expressed in decibels and is widely used to denote transducer gain. An increase or amplification. In radar there are two general usages of the term: (a) antenna gain, or gain factor, is the ratio of the power transmitted along the beam axis to that of an isotropic radiator transmitting the same total power; (b) receiver gain, or video gain, is the amplification given a signal by the receiver.
Gain
"Gap Energy" is the difference in energy between the lowest level of conduction band and the highest level of valence band. It is an energy range in a solid where no electron states can exist.
Gap Energy
ratio of the pV value of a gas (product of pressure and volume of a given quantity of gas at the respective temperature) flowing through a pipe cross-section during a time interval and the related interval
Quotient aus dem pV-Wert eines Gases (Produkt aus Druck und Volumen einer bestimmten Menge eines Gases bei der jeweils herrschenden Temperatur), das während einer Zeitspanne durch einen Leitungsquerschnitt strömt, und der zugehörigen Zeitspanne
gas leak rate
Gauge Pressure is the pressure of a system relative to the pressure of the surrounding atmosphere. It is the difference between the absolute pressure and the atmospheric pressure. Gauge pressure is positive for pressures above atmospheric pressure and negative for pressures below it. A Quantity in QUDT having a QuantityKind of GaugePressure would typically also assert the value of qudt:isDeltaQuantity to be true, indicating that the value is a difference between two pressures.
Gauge Pressure
The abundance of each gene family in the community. Gene families are groups of evolutionarily-related protein-coding sequences that often perform similar functions. Gene family abundance is reported in RPK (reads per kilobase) units to normalize for gene length.
Applicable units are those of quantitykind:GeneFamilyAbundance
Gene Family Abundance
Generalized Coordinates refers to the parameters that describe the configuration of the system relative to some reference configuration. These parameters must uniquely define the configuration of the system relative to the reference configuration.
$q_i$, where $q_i$ is one of the coordinates that is used to describe the position of the system under consideration, and $N$ is the lowest number of coordinates necessary to fully define the position of the system.
Applicable units are those of quantitykind:GeneralizedCoordinate
Generalized Coordinate
Generalized Forces find use in Lagrangian mechanics, where they play a role conjugate to generalized coordinates.
$\delta A = \sum Q_i\delta q_i$, where $A$ is work and $q_i$ is a generalized coordinate.
Applicable units are those of quantitykind:GeneralizedForce
Generalized Force
Generalized Momentum, also known as the canonical or conjugate momentum, extends the concepts of both linear momentum and angular momentum. To distinguish it from generalized momentum, the product of mass and velocity is also referred to as mechanical, kinetic or kinematic momentum.
$p_i = \frac{\partial L}{\partial \dot{q_i}}$, where $L$ is the Langrange function and $\dot{q_i}$ is a generalized velocity.
Applicable units are those of quantitykind:GeneralizedMomentum
Generalized Velocities are the time derivatives of the generalized coordinates of the system.
$\dot{q_i} = \frac{dq_i}{dt}$, where $q_i$ is the generalized coordinate and $t$ is time.
Applicable units are those of quantitykind:GeneralizedVelocity
Generalized Velocity
$\textit{Internal Energy}$ is one of the potentials are used to measure energy changes in systems as they evolve from an initial state to a final state. The potential used depends on the constraints of the system, such as constant temperature or pressure. $\textit{Internal Energy}$ is the internal energy of the system, $\textit{Enthalpy}$ is the internal energy of the system plus the energy related to pressure-volume work, and Helmholtz and Gibbs free energy are the energies available in a system to do useful work when the temperature and volume or the pressure and temperature are fixed, respectively. The name $\textit{Gibbs Free Energy}$ is also used.
$G = H - T \cdot S$, where $H$ is enthalpy, $T$ is thermodynamic temperature and $S$ is entropy.
Gibbs Energy is one of the potentials used to measure energy changes in systems as they evolve from an initial state to a final state. The potential used depends on the constraints of the system, such as constant temperature or pressure. $\textit{Internal Energy} is the internal energy of the system, Enthalpy is the internal energy of the system plus the energy related to pressure-volume work, and Helmholtz and Gibbs free energy are the energies available in a system to do useful work when the temperature and volume or the pressure and temperature are fixed, respectively. The name Gibbs Free Energy is also used.
Energía de Gibbs
Entalpie liberă
Gibbs Serbest Enerjisi
Gibbs energy
Gibbsova volná energie
Prosta entalpija
Tenaga Gibbs
energia libera di Gibbs
energia livre de Gibbs
entalpia swobodna
enthalpie libre
freie Enthalpie
энергия Гиббса
انرژی آزاد گیبس
طاقة غيبس الحرة
ギブズエネルギー
吉布斯自由能
Gibbs function
Gibbs-Energie
Gibbs-Funktion
fungsi Gibbs
Applicable units are those of quantitykind:Gradient
An "Grand Canonical Partition Function" for a grand canonical ensemble, a system that can exchange both heat and particles with the environment, which has a constant temperature and a chemical potential.
$\Xi = \sum_{N_A, N_B, ...} Z(N_A, N_B, ...) \cdot \lambda_A^{N_A} \cdot \lambda_B^{N_B} \cdot ...$, where $Z(N_A, N_B, ...)$ is the canonical partition function for the given number of particles $A, B, ...,$, and $\lambda_A, \lambda_B, ...$ are the absolute activities of particles $A, B, ...$.
Grand Canonical Partition Function
The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; the more remote the body the less the gravity; the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them.
Gravitational Attraction
In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. The group speed of sound describes the propagation of the disturbance.
$c_g = \frac{d\omega}{dk}$, where $\omega$ is the angular frequency and $k$ is angular wavenumber.
Applicable units are those of quantitykind:GroupSpeedOfSound
Group Speed of Sound
The sum of excess temperature over 5.5°C, where the temperature is the mean of the minimum and maximum atmospheric temperature in a day. This measure is appropriate for most cereal crops.
Applicable units are those of quantitykind:GrowingDegreeDay
Growing Degree Days (Cereals)
Applicable units are those of quantitykind:TimeTemperature
"Gruneisen Parameter" named after Eduard Grüneisen, describes the effect that changing the volume of a crystal lattice has on its vibrational properties, and, as a consequence, the effect that changing temperature has on the size or dynamics of the lattice.
$\gamma = \frac{\alpha_V}{x_T c_V\rho}$, where $\alpha_V$ is the cubic expansion coefficient, $x_T$ is isothermal compressibility, $c_V$ is specific heat capacity at constant volume, and $\rho$ is mass density.
Applicable units are those of quantitykind:GruneisenParameter
Gruneisen Parameter
"Gustatory Threshold" are thresholds for classes of taste that can be detected by the human mouth and thresholds of sensitivity to foods, drinks and other substances.
Gustatory Threshold
$\textit{Gyromagnetic Ratio}$, also sometimes known as the magnetogyric ratio in other disciplines, of a particle or system is the ratio of its magnetic dipole moment to its angular momentum, and it is often denoted by the symbol, $\gamma$. Its SI units are radian per second per tesla ($rad s^{-1} \cdot T^{1}$) or, equivalently, coulomb per kilogram ($C \cdot kg^{-1}$).
$\mu = \gamma J$, where $\mu$ is the magnetic dipole moment, and $J$ is the total angular momentum.
Gyromagnetic Ratio
The "Half-Life" is the average duration required for the decay of one half of the atoms or nuclei.
Halbwertszeit
Poločas rozpadu
Separuh hayat
half-life
meia-vida
semiperiodo
tempo di dimezzamento
temps de demi-vie
yarılanma süresi
نیمه عمر
半衰期
semivita
The "Half-Value Thickness" is the thickness of the material at which the intensity of radiation entering it is reduced by one half.
Half-Value Thickness
"Hall Coefficient" is defined as the ratio of the induced electric field to the product of the current density and the applied magnetic field.
In an isotropic conductor, the relation between electric field strength, $E$, and electric current density, $J$ is $E = \rho J + R_H(B X J)$, where $\rho$ is resistivity, and $B$ is magnetic flux density.
Applicable units are those of quantitykind:HallCoefficient
Hall Coefficient
The Hamilton–Jacobi equation (HJE) is a necessary condition describing extremal geometry in generalizations of problems from the calculus of variations.
$H = \sum p_i\dot{q_i} - L$, where $p_i$ is a generalized momentum, $\dot{q_i}$ is a generalized velocity, and $L$ is the Lagrange function.
Applicable units are those of quantitykind:HamiltonFunction
Hamilton Function
Head End Pressure
The number of heartbeats per unit of time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart). The heart rate may be too fast (tachycardia) or too slow (bradycardia). The average adult pulse rate at rest is 60–80 per minute, but exercise, injury, illness, and emotion may produce much faster rates.
Applicable units are those of quantitykind:HeartRate
Heart Rate
"Heat" is the energy transferred by a thermal process. Heat can be measured in terms of the dynamical units of energy, as the erg, joule, etc., or in terms of the amount of energy required to produce a definite thermal change in some substance, as, for example, the energy required per degree to raise the temperature of a unit mass of water at some temperature ( calorie, Btu).
Applicable units are those of quantitykind:ThermalEnergy
Wärme
calor
calore
cantitate de căldură
ciepło
heat
jednotka tepla
kuantiti haba Haba
labor
quantidade de calor
quantité de chaleur
toplota
ısı miktarı
Теплота
حرارة
کمیت گرما
ऊष्मा
热量
熱量
Wärmemenge
amount of heat
chaleur
jumlah haba
quantità di calore
"Heat Capacity" (usually denoted by a capital $C$, often with subscripts), or thermal capacity, is the measurable physical quantity that characterizes the amount of heat required to change a substance's temperature by a given amount. In the International System of Units (SI), heat capacity is expressed in units of joule(s) (J) per kelvin (K).
$C = dQ/dT$, where $Q$ is amount of heat and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:HeatCapacity
Wärmekapazität
capacidad calorífica
capacidade térmica
capacitate termică
capacità termica
capacité thermique
heat capacity
isı kapasitesi
muatan haba
pojemność cieplna
tepelná kapacita
toplotna kapaciteta
теплоёмкость
سعة حرارية
ظرفیت گرمایی
ऊष्मा धारिता
热容
熱容量
The heat capacity ratio, or ratio of specific heats, is the ratio of the heat capacity at constant pressure ($C_P$) to heat capacity at constant volume ($C_V$). For an ideal gas, the heat capacity is constant with temperature ($\theta$). Accordingly we can express the enthalpy as $H = C_P*\theta$ and the internal energy as $U = C_V \cdot \theta$. Thus, it can also be said that the heat capacity ratio is the ratio between enthalpy and internal energy.
Heat Capacity Ratio
The rate of heat flow between two systems is measured in watts (joules per second). The formula for rate of heat flow is $\bigtriangleup Q / \bigtriangleup t = -K \times A \times \bigtriangleup T/x$, where $\bigtriangleup Q / \bigtriangleup t$ is the rate of heat flow; $-K$ is the thermal conductivity factor; A is the surface area; $\bigtriangleup T$ is the change in temperature and $x$ is the thickness of the material. $\bigtriangleup T/ x$ is called the temperature gradient and is always negative because of the heat of flow always goes from more thermal energy to less).
Heat Flow Rate
$\textit{Heat Flux}$ is the heat rate per area. In SI units, heat flux is measured in $W/m^2$. Heat rate is a scalar quantity, while heat flux is a vectorial quantity. To define the heat flux at a certain point in space, one takes the limiting case where the size of the surface becomes infinitesimally small.
Heat Flow Rate per Unit Area
Heat Flux Density
The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.
Applicable units are those of quantitykind:SpecificEnergy
Calorific Value
Energy Value
Heating Value
"Height" is the measurement of vertical distance, but has two meanings in common use. It can either indicate how "tall" something is, or how "high up" it is.
Höhe
Ketinggian
Výška
altezza
altura
hauteur
height
yükseklik
Înălțime
высота
ارتفاع
高度
$\textit{Helmholtz Energy}$ is one of the potentials are used to measure energy changes in systems as they evolve from an initial state to a final state. The potential used depends on the constraints of the system, such as constant temperature or pressure. $\textit{Internal Energy}$ is the internal energy of the system, $\textit{Enthalpy}$ is the internal energy of the system plus the energy related to pressure-volume work, and Helmholtz and Gibbs free energy are the energies available in a system to do useful work when the temperature and volume or the pressure and temperature are fixed, respectively. The name $\textit{Helmholz Free Energy}$ is also used.
$H = U - T \cdot S$, where $U$ is internal energy, $T$ is thermodynamic temperature and $S$ is entropy.
Energía de Helmholtz
Helmholtz energy
Helmholtz enerjisi
Helmholtzova volná energie
Prosta energija
Tenaga Helmholtz
energia libera di Helmholz
energia livre de Helmholtz
energia swobodna
freie Energie
énergie libre
свободная энергия Гельмгольца
انرژی آزاد هلمولتز
طاقة هلمهولتز الحرة
ヘルムホルツの自由エネルギー
亥姆霍兹自由能
Helmholtz fonksiyonu
Helmholtz function
Helmholtz-Energie
Helmholtz-Funktion
fungsi Helmholtz
A quantity kind that is a proportionality constant that relates the partial pressure of a gas above a liquid and the concentration of the gas dissolved in the liquid. The numerator contains the gaseous concentration and the denominator contains the liquid concentration.
Applicable units are those of quantitykind:HenrysLawVolatilityConstant
Henry's Law Volatility Constant
"Hole Density" is the number of holes per volume in a valence band.
Hole Density
Component of a projectile's velocity, which acts parallel to the ground and does not lift the projectile in the air.
Horizontal Velocity
Permeability is a property of porous materials that is an indication of the ability for fluids (gas or liquid) to flow through them. Fluids can more easily flow through a material with high permeability than one with low permeability. The permeability of a medium is related to the porosity, but also to the shapes of the pores in the medium and their level of connectedness.
Applicable units are those of quantitykind:HydraulicPermeability
Hydraulic Permeability
Fluid Permeability
The "Hyperfine Structure Quantum Number" is a quantum number of an atom describing inclination of the nuclear spin with respect to a quantization axis given by the magnetic field produced by the orbital electrons.
Applicable units are those of quantitykind:HyperfineStructureQuantumNumber
Hyperfine Structure Quantum Number
The sum of the vehicle dry mass, residual fluids and gasses, personnel and personnel provisions, and cargo.
Inert Mass
Ignition interval time
Illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of the intensity of the incident light, wavelength-weighted by the luminosity function to correlate with human brightness perception.
$E_v = \frac{d\Phi}{dA}$, where $d\Phi$ is the luminous flux incident on an element of the surface with area $dA$.
Applicable units are those of quantitykind:LuminousFluxPerArea
Beleuchtungsstärke
Intenzita osvětlení
Pencahayaan
aydınlanma şiddeti
illuminamento
illuminance
iluminamento
iluminare
luminosidad
megvilágítás
natężenie oświetlenia
osvetljenost
éclairement lumineux
Осветеност
Освещённость
הארה (שטף ליחידת שטח)
شدة الضوء
شدت روشنایی
प्रदीपन
照度
éclairement
"Impedance" is the measure of the opposition that a circuit presents to the passage of a current when a voltage is applied. In quantitative terms, it is the complex ratio of the voltage to the current in an alternating current (AC) circuit. Impedance extends the concept of resistance to AC circuits, and possesses both magnitude and phase, unlike resistance, which has only magnitude. When a circuit is driven with direct current (DC), there is no distinction between impedance and resistance; the latter can be thought of as impedance with zero phase angle.
$\underline{Z} = \underline{U} / \underline{I}$, where $\underline{U}$ is the voltage phasor and $\underline{I}$ is the electric current phasor.
Applicable units are those of quantitykind:Impedance
Impedance
product of force and time
Produkt aus Kraft und Zeit
Applicable units are those of quantitykind:Impulse
impulse
In epidemiology, incidence is a measure of the probability of occurrence of a given medical condition in a population within a specified period of time.
Incidence
Incidence proportion (also known as cumulative incidence) is the number of new cases within a specified time period divided by the size of the population initially at risk. For example, if a population initially contains 1,000 non-diseased persons and 28 develop a condition over two years of observation, the incidence proportion is 28 cases per 1,000 persons per two years, i.e. 2.8% per two years.
Incidence Proportion
The incidence rate is a measure of the frequency with which a disease or other incident occurs over a specified time period. It is also known as the incidence density rate or person-time incidence rate, when the denominator is the combined person-time of the population at risk (the sum of the time duration of exposure across all persons exposed)
Incidence Rate
"Inductance" is an electromagentic quantity that characterizes a circuit's resistance to any change of electric current; a change in the electric current through induces an opposing electromotive force (EMF). Quantitatively, inductance is proportional to the magnetic flux per unit of electric current.
$L =\frac{\Psi}{I}$, where $I$ is an electric current in a thin conducting loop, and $\Psi$ is the linked flux caused by that electric current.
Applicable units are those of quantitykind:Inductance
Inductance électrique
Indukstans
Induktivität
Indukčnost
inductance
inductancia
inductantia
inductanță
indukcyjność
induktivitás
induktivnost
induttanza
indutância
İndüktans
Индуктивност
Индуктивность
השראות
القاوری
المحاثة (التحريض)
प्रेरकत्व
インダクタンス・誘導係数
电感
Induktiviti
inductivity
The "Infinite Multiplication Factor" is the multiplication factor for an infinite medium or for an infinite repeating lattice.
Infinite Multiplication Factor
I(xi) as the information content I(xi) of a result xi (e.g. the occurrence of a character xi) is the common logarithm of the reciprocal of the probability p(xi) of its occurrence, i.e.: l(x) lg 1/p(x) Hart, where p(x) is the probability of the event x
(xi) als der Informationsgehalt I(xi) eines Ergebnisses xi (z. B. das Auftreten eines Zeichens xi) ist der dekatischer Logarithmus des Kehrwertes der Wahrscheinlichkeit p (xi) für sein eintreten, also: l(x) lg 1/p(x) Hart, dabei ist p(x) die Wahrscheinlichkeit des Ereignisses x
information content expressed as a logarithm to base 10
I(xi) as the information content I(xi) of a result xi (e.g. the occurrence of a character xi) is the binary logarithm of the reciprocal of the probability p(xi) of its occurrence, i.e.: l(x) lb 1/p(x) Sh, where p(x) is the probability of the event x
I(xi) als der Informationsgehalt I(xi) eines Ergebnisses xi (z. B. das Auftreten eines Zeichens xi) ist der binäre Logarithmus des Kehrwertes der Wahrscheinlichkeit p (xi) für sein eintreten, also: l(x) = lb 1/p(x) Sh, dabei ist p(x) die Wahrscheinlichkeit des Ereignisses x
information content expressed as a logarithm to base 2
I(xi) as the information content I(xi) of a result xi (e.g. the occurrence of a character xi) is the natural logarithm of the reciprocal of the probability p(xi) of its occurrence, i.e.: l(x) ln 1/p(x) nat, where p(x) is the probability of the event x
I(xi) als der Informationsgehalt I(xi) eines Ergebnisses xi (z. B. das Auftreten eines Zeichens xi) ist der natürliche Logarithmus des Kehrwertes der Wahrscheinlichkeit p (xi) für sein eintreten, also: l(x) = ln 1/p(x) nat, dabei ist p(x) die Wahrscheinlichkeit des Ereignisses x
information content expressed as a logarithm to base e
Information Entropy is a concept from information theory. It tells how much information there is in an event. In general, the more uncertain or random the event is, the more information it will contain. The concept of information entropy was created by a mathematician. He was named Claude Elwood Shannon. It has applications in many areas, including lossless data compression, statistical inference, cryptography and recently in other disciplines as biology, physics or machine learning.
Applicable units are those of quantitykind:InformationEntropy
Information Entropy
Applicable units are those of quantitykind:InformationFlowRate
Information flow rate
Initial Expansion Ratio
Initial Nozzle Throat Diameter
Initial Vehicle Mass
The velocity of a moving body at starting; especially, the velocity of a projectile as it leaves the mouth of a firearm from which it is discharged.
Initial Velocity
For a two-terminal element or a two-terminal circuit with terminals A and B, $\textit{Instantaneous Power}$ is the product of the voltage $u_{AB}$ between the terminals and the electric current i in the element or circuit: $$p = u_{AB} \cdot i$$ Where $u_{AB}$ is the line integral of the electric field strength from A to B, and where the electric current in the element or circuit is taken positive if its direction is from A to B and negative in the opposite case. $$$$ For an n-terminal circuit, it is the sum of the instantaneous powers relative to the n - 1 pairs of terminals when one of the terminals is chosen as a common terminal for the pairs. $$$$ For a polyphase element, it is the sum of the instantaneous powers in all phase elements of a polyphase element. $$$$ For a polyphase line consisting of m line conductors and one neutral conductor, it is the sum of the m instantaneous powers expressed for each line conductor by the product of the polyphase line-to-neutral voltage and the corresponding line current.
Instantaneous Power
The "InternalConversionFactor" describes the rate of internal conversion. It is the ratio of the number of internal conversion electrons to the number of gamma quanta emitted by the radioactive atom in a given transition.
Applicable units are those of quantitykind:InternalConversionFactor
InternalConversionFactor
"Internal Energy" is simply its energy. "internal" refers to the fact that some energy contributions are not considered. For instance, when the total system is in uniform motion, it has kinetic energy. This overall kinetic energy is never seen as part of the internal energy; one could call it external energy. Or, if the system is at constant non-zero height above the surface the Earth, it has constant potential energy in the gravitational field of the Earth. Gravitational energy is only taken into account when it plays a role in the phenomenon of interest, for instance in a colloidal suspension, where the gravitation influences the up- downward motion of the small particles comprising the colloid. In all other cases, gravitational energy is assumed not to contribute to the internal energy; one may call it again external energy.
For a closed thermodynamic system, $\Delta U = Q + W$, where $Q$ is amount of heat transferred to the system and $W$ is work done on the system provided that no chemical reactions occur.
Internal Energy
"Intinsic Carrier Density" is proportional to electron and hole densities.
$np = n_i^2$, where $n$ is electron density and $p$ is hole density.
Intinsic Carrier Density
Applicable units are those of quantitykind:InverseAmountOfSubstance
Inverse amount of substance
Applicable units are those of quantitykind:InverseEnergy
Inverse Energy
Inverse Square Energy
Reciprocal length or inverse length is a measurement used in several branches of science and mathematics. As the reciprocal of length, common units used for this measurement include the reciprocal metre or inverse metre ($m^{-1}$), the reciprocal centimetre or inverse centimetre ($cm^{-1}$), and, in optics, the dioptre.
Applicable units are those of quantitykind:InverseLength
Inverse Length
Applicable units are those of quantitykind:InverseLengthTemperature
Inverse Length Temperature
Applicable units are those of quantitykind:InverseMagneticFlux
Inverse Magnetic Flux
Applicable units are those of quantitykind:InverseMass
Inverse Square Mass
Applicable units are those of quantitykind:InversePermittivity
Inverse Permittivity
Applicable units are those of quantitykind:InversePressure
Inverse Pressure
Applicable units are those of quantitykind:InverseSquareEnergy
Applicable units are those of quantitykind:InverseSquareMass
Applicable units are those of quantitykind:InverseSquareTime
Inverse Square Time
Applicable units are those of quantitykind:InverseTemperature
Inverse Temperature
Inverse Time
Applicable units are those of quantitykind:InverseTimeTemperature
Inverse Time Temperature
Applicable units are those of quantitykind:InverseVolume
Inverse Volume
"Ion Concentration" is the number of ions per unit volume. Also known as ion density.
An ion current is the influx and/or efflux of ions through an ion channel.
Ion Current
"Ion Density" is the number of ions per unit volume. Also known as ion concentration.
$n^+ = \frac{N^+}{V}$, $n^- = \frac{N^-}{V}$ where $N^+$ and $N^-$ are the number of positive and negative ions, respectively, in a 3D domain with volume $V$.
Ion Density
The "Ion Transport Number" is a quantity which indicates the different contribution of ions to the electric current in electrolytes due to different electrical mobility.
$t_B = \frac{i_B}{i}$, where $i_B$ is the electric current carried by the ion $B$ and $i$ is the total electric current.
Applicable units are those of quantitykind:IonTransportNumber
Ion Transport Number
The total charge of an ion. The charge of an electron; the charge of any ion is equal to this electron charge in magnitude, or is an integral multiple of it.
Ionic Charge
The "Ionic Strength" of a solution is a measure of the concentration of ions in that solution.
$I = \frac{1}{2} \sum z_i^2 b_i$, where the summation is carried out over all ions with charge number $z_i$ and molality $m_i$.
Applicable units are those of quantitykind:IonicStrength
Ionic Strength
"Ionization Energy" is the energy difference between an electron at rest at infinity and an electron at a certain energy level. The amount of energy required to remove an electron from that atom or molecule in the gas phase.
Ionization Energy
Irradiance and Radiant Emittance are radiometry terms for the power per unit area of electromagnetic radiation at a surface. "Irradiance" is used when the electromagnetic radiation is incident on the surface. "Radiant emmitance" (or "radiant exitance") is used when the radiation is emerging from the surface.
$E = \frac{d\Phi}{dA}$, where $d\Phi$ is the radiant flux incident on an element of the surface with area $dA$.
Applicable units are those of quantitykind:Irradiance
Bestrahlungsstärke
Intenzita záření
Kepenyinaran
irradiance
irradiancia
irradianza
irradiância
yoğunluk
éclairement énergétique
Поверхностная плотность потока энергии
الطاقة الهلامية
پرتو افکنی/چگالی تابش
熱流束
辐照度
koyuluk
$\textit{Isentropic compressibility}$ is the extent to which a material reduces its volume when it is subjected to compressive stresses at a constant value of entropy.
$\varkappa_S = \frac{1}{V}\left (\frac{\partial V}{\partial p} \right )_S$, where $V$ is volume, $p$ is $pressure$, and $S$ is entropy,
Isentropic compressibility is the extent to which a material reduces its volume when it is subjected to compressive stresses at a constant value of entropy.
Applicable units are those of quantitykind:IsentropicCompressibility
Isentropic Compressibility
$\textit{Isentropic Exponent}$ is a variant of $\textit{Specific Heat Ratio Capacities}$. For an ideal gas $\textit{Isentropic Exponent}$, $\varkappa$. is equal to $\gamma$, the ratio of its specific heat capacities $c_p$ and $c_v$ under steady pressure and volume.
$\varkappa = -\frac{V}{p}\left \{ \frac{\partial p}{\partial V}\right \}_S$, where $V$ is volume, $p$ is pressure, and $S$ is entropy.
Applicable units are those of quantitykind:IsentropicExponent
Coefficiente di dilatazione adiabatica
Coeficient de transformare adiabatică
Coeficiente de dilatación adiabática
Coeficiente de expansão adiabática
Isentropenexponent
Poissonova konstanta
Wykładnik adiabaty
adiabatni eksponent
exposant isoentropique
isentropic exponent
ısı sığası oranı; adyabatik indeks
Показатель адиабаты
نسبة السعة الحرارية
比熱比
绝热指数
indice adiabatico
indice adiabatique
The isothermal compressibility defines the rate of change of system volume with pressure.
$\varkappa_T = \frac{1}{V}\left (\frac{\partial V}{\partial p} \right )_T$, where $V$ is volume, $p$ is $pressure$, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:IsothermalCompressibility
Izotermna stisljivost
Ketermampatan isotermik
compresibilidad isotérmica
compressibilidade isotérmica
compressibilité isotherme
comprimibilità isotermica
isothermal compressibility
isotherme Kompressibilität
objemová stlačitelnost
ściśliwość izotermiczna
изотермический коэффициент сжимаемости
ضریب تراکم‌پذیری همدما
معامل الانضغاط عند ثبوت درجة الحرارة
等温压缩率
等温圧縮率
"Isothermal Moisture Capacity" is the capacity of a material to absorb moisture in the Effective Moisture Penetration Depth (EMPD) model.
Isothermal Moisture Capacity
"Kerma" is the sum of the initial kinetic energies of all the charged particles liberated by uncharged ionizing radiation (i.e., indirectly ionizing radiation such as photons and neutrons) in a sample of matter, divided by the mass of the sample.
For indirectly ionizing (uncharged) particles, $K= \frac{dE_{tr}}{dm}$, where $dE_{tr}$ is the mean sum of the initial kinetic energies of all the charged ionizing particles liberated by uncharged ionizing particles in an element of matter, and $dm$ is the mass of that element.
Applicable units are those of quantitykind:Kerma
Kerma
"Kerma Rate" is the kerma per unit time.
$\dot{K} = \frac{dK}{dt}$, where $K$ is the increment of kerma during time interval with duration $t$.
Applicable units are those of quantitykind:KermaRate
Kerma Rate
The ratio of the viscosity of a liquid to its density. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. In many situations, we are concerned with the ratio of the inertial force to the viscous force (that is the Reynolds number), the former characterized by the fluid density $\rho$. This ratio is characterized by the kinematic viscosity (Greek letter $\nu$), defined as follows: $\nu = \mu / \rho$. The SI unit of $\nu$ is $m^{2}/s$. The SI unit of $\nu$ is $kg/m^{1}$.
$\nu = \frac{\eta}{\rho}$, where $\eta$ is dynamic viscosity and $\rho$ is mass density.
Applicable units are those of quantitykind:KinematicViscosity
Kelikatan kinematik
Kinematik akmazlık
Viscozitate cinematică
kinematic viscosity
kinematische Viskosität
kinematična viskoznost
lepkość kinematyczna
viscosidad cinemática
viscosidade cinemática
viscosità cinematica
viscosité cinématique
кинематическую вязкость
گرانروی جنبشی/ویسکوزیته جنبشی
运动粘度
ratio of the dynamic viscosity and the density of a material measured at the same temperature, or ratio of the diffusion current density and carrier density gradient, or ratio of thermal conductivity divided by heat capacity
Quotient aus der dynamischen Viskosität und der Dichte eines Stoffes oder Quotient Diffusionsstromdichte durch Gradient der Ladungsträgerdichte oder Quotient Wärmeleitfähigkeit durch Wärmekapazität
kinematic viscosity or diffusion constant or thermal diffusivity
$\textit{Kinetic Energy}$ is the energy which a body possesses as a consequence of its motion, defined as one-half the product of its mass $m$ and the square of its speed $v$, $ \frac{1}{2} mv^{2} $. The kinetic energy per unit volume of a fluid parcel is the $ \frac{1}{2} p v^{2}$ , where $p$ is the density and $v$ the speed of the parcel. See potential energy. For relativistic speeds the kinetic energy is given by $E_k = mc^2 - m_0 c^2$, where $c$ is the velocity of light in a vacuum, $m_0$ is the rest mass, and $m$ is the moving mass.
$T = \frac{mv^2}{2}$, where $m$ is mass and $v$ is speed.
Kinetic Energy
energy presented in the movement of a body, composed of translation and rotation energies, determined by the movement of this body compared to another system and by its mass (mass distribution) or energy in the terms of heat
Energie, die in der Bewegung eines Körpers steckt und sich aus Translationsenergie und Rotationsenergie zusammen setzt, die durch die Bewegung dieses Körpers gegenüber einem anderen System und durch seine Masse (Massenverteilung) bestimmt wird oder Energie in Form von Wärme
kinetic or thermal energy
The Lagrange Function is a function that summarizes the dynamics of the system.
$L(q_i, \dot{q_i}) = T(q_i, \dot{q_i}) - V(q_i)$, where $T$ is kinetic energy, $V$ is potential energy, $q_i$ is a generalized coordinate, and $\dot{q_i}$ is a generalized velocity.
Applicable units are those of quantitykind:LagrangeFunction
Lagrange Function
"Landau-Ginzburg Number", also known as the Ginzburg-Landau parameter, describes the relationship between London penetration depth and coherence length.
At zero thermodynamic temperature $\kappa = \frac{\lambda_L}{(\varepsilon\sqrt{2})}$, where $\lambda_L$ is London penetration depth and $\varepsilon$ is coherence length.
Applicable units are those of quantitykind:Landau-GinzburgNumber
Landau-Ginzburg Number
The "Lande g-Factor" is a particular example of a g-factor, namely for an electron with both spin and orbital angular momenta. It is named after Alfred Landé, who first described it in 1921.
$g = \frac{\mu}{J\mu_B}$, where $\mu$ is the magnitude of magnetic dipole moment, $J$ is the total angular momentum quantum number, and $\mu_B$ is the Bohr magneton.
Applicable units are those of quantitykind:LandeGFactor
Lande g-Factor
The "Larmor Frequency" describes angular momentum vector precession about the external field axis with an angular frequency.
$\omega_L = \frac{e}{2m_e}B$, where $e$ is the elementary charge, $m_e$ is the rest mass of electron, and $B$ is the magnetic flux density.
"Lattice Plane Spacing" is the distance between successive lattice planes.
Lattice Plane Spacing
"Lattice Vector" is a translation vector that maps the crystal lattice on itself.
Lattice Vector
"Leakage Factor" is the ratio of the total magnetic flux to the useful magnetic flux of a magnetic circuit.
$\sigma = 1 - k^2$, where $k$ is the coupling factor.
Applicable units are those of quantitykind:LeakageFactor
Leakage Factor
In geometric measurements, length most commonly refers to the est dimension of an object. In some contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured.
Délka
Länge
Panjang
comprimento
dolžina
długość
hossz
length
longitud
longitudo
longueur
lunghezza
lungime
uzunluk
Μήκος
Длина
Дължина
אורך
طول
लम्बाई
長さ
长度
Length Force
Applicable units are those of quantitykind:LengthEnergy
Length Energy
Applicable units are those of quantitykind:LengthMass
Length Mass
Applicable units are those of quantitykind:LengthMolarEnergy
Length Molar Energy
Length per Electric Current
Applicable units are those of quantitykind:LengthRatio
Length Ratio
Applicable units are those of quantitykind:LengthTemperature
Length Temperature
Applicable units are those of quantitykind:LengthTemperatureTime
Length Temperature Time
The "Lethargy" is a dimensionless logarithm of the ratio of the energy of source neutrons to the energy of neutrons after a collision.
$u = \ln(\frac{E_0}{E})$, where $E_0$ is a reference energy.
Applicable units are those of quantitykind:Lethargy
Lethargy
The "Level Width" is the uncertainty in the energy of a quantum-mechanical system having discrete energy levels in a state that is not strictly stationary. The system may be an atom, a molecule, or an atomic nucleus.
$\Gamma = \frac{\hbar}{\tau}$, where $\hbar$ is the reduced Planck constant and $\tau$ is the mean lifetime.
Applicable units are those of quantitykind:LevelWidth
Level Width
The lift coefficient is a dimensionless coefficient that relates the lift generated by a lifting body, the dynamic pressure of the fluid flow around the body, and a reference area associated with the body.
Lift Coefficient
The lift force, lifting force or simply lift is the sum of all the forces on a body that force it to move perpendicular to the direction of flow.
Lift Force
The Linear Absorption Coefficient is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter.
$\alpha(\lambda) = \frac{1}{\Phi_\lambda(\lambda)}\frac{d\Phi_\lambda(\lambda)}{dl}$, where $\frac{d\Phi}{\Phi}$ is the relative decrease, caused by absorption, in the spectral radiant flux $\Phi$ of a collimated beam of electromagnetic radiation corresponding to the wavelength $\lambda$ during traversal of an infinitesimal layer of a medium and $dl$ is the length traversed.
Applicable units are those of quantitykind:LinearAbsorptionCoefficient
Linear Absorption Coefficient
Applicable units are those of quantitykind:LinearAcceleration
Linear Acceleration
"Linear Attenuation Coefficient", also called the attenuation coefficient, narrow beam attenuation coefficient, or absorption coefficient, is a quantity that characterizes how easily a material or medium can be penetrated by a beam of light, sound, particles, or other energy or matter.
$\mu = -\frac{1}{J}\frac{dJ}{dx}$, where $J$ is the magnitude of the current rate of a beam of particles parallel to the $x-direction$. Or: $\mu(\lambda) = \frac{1}{\Phi_\lambda(\lambda)}\frac{d\Phi_\lambda(\lambda)}{dl}$, where $\frac{d\Phi}{\Phi}$ is the relative decrease in the spectral radiant flux $\Phi$ of a collimated beam of electromagnetic radiation corresponding to the wavelength $\lambda$ during traversal of an infinitesimal layer of a medium and $dl$ is the length traversed.
Applicable units are those of quantitykind:LinearAttenuationCoefficient
Linear Attenuation Coefficient
Applicable units are those of quantitykind:LinearBitDensity
Linear Compressibility is a measure of the relative length change of a solid as a response to a normal force change.
Applicable units are those of quantitykind:LinearCompressibility
Linear Compressibility
The Linear density, linear mass density or linear mass is a measure of mass per unit of length, and it is a characteristic of strings or other one-dimensional objects.
$\rho_l = \frac{dm}{dl}$, where $m$ is mass and $l$ is length.
Applicable units are those of quantitykind:LinearDensity
Linear Density
"Linear Electric Linear Current" is the electric current per unit line.
Linear Electric Current
"Linear Electric Linear Current Density" is the electric current per unit length. Electric current, $I$, through a curve $C$ is defined as $I = \int_C J _s \times e_n$, where $e_n$ is a unit vector perpendicular to the surface and line vector element, and $dr$ is the differential of position vector $r$.
$J_s = \rho_A v$, where $\rho_A$ is surface density of electric charge and $v$ is velocity.
Linear Electric Current Density
"Linear Energy Transfer" (LET) is the linear density of energy lost by a charged ionizing particle travelling through matter.Typically, this measure is used to quantify the effects of ionizing radiation on biological specimens or electronic devices.
For ionizing charged particles, $L_\Delta = \frac{dE_\Delta}{dl}$, where $dE_\Delta$ is the mean energy lost in elctronic collisions locally to matter along a small path through the matter, minus the sum of the kinetic energies of all the electrons released with kinetic energies in excess of $\Delta$, and $dl$ is the length of that path.
Applicable units are those of quantitykind:LinearEnergyTransfer
Linear Energy Transfer
$\alpha_l = \frac{1}{l} \; \frac{dl}{dT}$, where $l$ is $length$ and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:LinearExpansionCoefficient
coefficient de dilatation linéique
coefficiente di dilatazione lineare
coeficiente de dilatação térmica linear
coeficiente de expansión térmica lineal
linear expansion coefficient
linearer Ausdehnungskoeffizient
współczynnik liniowej rozszerzalności cieplnej
معدل التمدد الحراري الخطي
線熱膨張係数
线性热膨胀系数
Another name for Force Per Length, used by the Industry Foundation Classes (IFC) standard.
Linear Force
Streckenlast
"Linear Ionization" is a description of how the ionization of an atom or molecule takes place. For example, an ion with a +2 charge can be created only from an ion with a +1 charge or a +3 charge. That is, the numerical charge of an atom or molecule must change sequentially, always moving from one number to an adjacent, or sequential, number. Using sequential ionization definition.
$N_{il} = \frac{1}{e}\frac{dQ}{dl}$, where $e$ is the elementary charge and $dQ$ is the average total charge of all positive ions produced over an infinitesimal element of the path with length $dl$ by an ionizing charged particle.
Applicable units are those of quantitykind:LinearIonization
Linear Ionization
Applicable units are those of quantitykind:LinearLogarithmicRatio
Applicable units are those of quantitykind:LinearMass
Linear momentum is the quantity obtained by multiplying the mass of a body by its linear velocity. The momentum of a continuous medium is given by the integral of the velocity over the mass of the medium or by the product of the total mass of the medium and the velocity of the center of gravity of the medium.The SI unit for linear momentum is meter-kilogram per second ($m-kg/s$).
Applicable units are those of quantitykind:LinearMomentum
Linear Momentum
Applicable units are those of quantitykind:LinearResistance
Stiffness is the extent to which an object resists deformation in response to an applied force. Linear Stiffness is the term used in the Industry Foundation Classes (IFC) standard.
A strain is a normalized measure of deformation representing the displacement between particles in the body relative to a reference length.
$\xi = \frac{\Delta l}{l_0}$, where $\Delta l$ is the increase in length and $l_0$ is the length in a reference state to be specified.
Linear Strain
When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling; this dimensional response to temperature change is expressed by its coefficient of thermal expansion. Different coefficients of thermal expansion can be defined for a substance depending on whether the expansion is measured by: linear thermal expansion, area thermal expansion, or volumetric thermal expansion.
Applicable units are those of quantitykind:LinearThermalExpansion
Linear Thermal Expansion
Applicable units are those of quantitykind:LinearTorque
Linear Velocity, as the name implies deals with speed in a straight line, the units are often $km/hr$ or $m/s$ or $mph$ (miles per hour). Linear Velocity (v) = change in distance/change in time, where $v = \bigtriangleup d/\bigtriangleup t$
Applicable units are those of quantitykind:LinearVelocity
Linear Velocity
ratio identifying the relationship between induced voltage and velocity
Verhältnis, das den Zusammenhang zwischen induzierter Spannung zur Geschwindigkeit kennzeichnet
linear voltage coefficient
electric charge divided by related length
elektrische Ladung dividiert durch dazugehörige Länge
lineic charge
number of data, usually dependent on the respective information complexity or its coding procedure, divided by the related length
Anzahl von Daten, die in der Regel abhängig von der jeweiligen Komplexität der Information oder deren Codierungsverfahren ist, dividiert durch die zugehörige Länge
lineic data volume
logarithm of the relationship between the value of a given quantity and the quantity of a reference value of the same type divided by the related length
Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art dividiert durch die zugehörige Länge
lineic logarithmic ratio
ratio between mass divided by the related length
Quotient Masse dividiert durch die dazugehörige Länge
lineic mass
power divided by the associated length
Leistung dividiert durch die zugehörige Länge
Applicable units are those of quantitykind:LineicPower
lineic power
lineic quantity
ratio of resistance divided by length
Quotient Widerstand durch Länge
lineic resistance
graphic resolution capacity of output devices such as printers or of data acquisition such as scanners, as a number of pixels per length
grafisches Auflösungsvermögen von Ausgabegeräten wie Druckern oder von Datenerfassungsgeräten wie Scannern als Anzahl der Bildpunkte je Länge
Applicable units are those of quantitykind:LineicResolution
lineic resolution
torque divided by the appropriate length
Drehmoment dividiert durch die zugehörige Länge
lineic torque
"Linked Flux" is defined as the path integral of the magnetic vector potential. This is the line integral of a magnetic vector potential $A$ along a curve $C$. The line vector element $dr$ is the differential of position vector $r$.
$\Psi_m = \int_C A \cdot dr$, where $A$ is magnetic vector potential and $dr$ is the vector element of the curve $C$.
Applicable units are those of quantitykind:MagneticFlux
Linked Flux
Liquid volume is the volume of a given amount of liquid, that is, the amount of space a liquid takes up. There are a number of different units used to measure liquid volume, but most of them fall under either the metric system of measurement or the Imperial system of measurement.
Applicable units are those of quantitykind:LiquidVolume
Liquid Volume
logarithmic frequency interval to base 10
A dimensionless ratio that is the logarithm of the ratio of a compound's concentration within a two phase mixture of liquid octanol and gaseous air at equilibrium. More simply, it is a comparison of the solubilities of the compound solute in these two immiscible substances.
Applicable units are those of quantitykind:LogOctanolAirPartitionCoefficient
Octanol Air Partition Coefficient
A dimensionless ratio that is the logarithm of the ratio of a compound's concentration within a two phase mixture of octanol and water at equilibrium. More simply, it is a comparison of the solubilities of the compound solute in these two immiscible liquids. This property is used to measure the lipophilicity and the hydrophilicity of a substance.
Applicable units are those of quantitykind:LogOctanolWaterPartitionCoefficient
Logarithm of Octanol Water Partition Coefficient
common logarithm of the ratio between the value of a defined variable and the value of a reference variable of the same type
dekadischer Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art
logarithm ratio to base 10
napierian logarithm of the ratio between the value of a given quantity and the value of a reference variable of the same type (base of logarithm: e = 2.718...)
natürlicher Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art (Basis des Logarithmus: e = 2,718...)
logarithm ratio to base e
$G = \log_{2}(f2/f1)$, where $f1$ and $f2 \geq f1$ are frequencies of two tones.
Applicable units are those of quantitykind:LogarithmicFrequencyInterval
Frequenzmaßintervall
Interval měření frekvence ?
Selang kekerapan logaritma
intervalle de fréquence logarithmique
intervallo logaritmico di frequenza
intervalo logarítmico de frequência
logarithmic frequency interval
logaritmik frekans aralığı
частотный интервал
فاصله فرکانس لگاریتمی
对数频率间隔
common logarithm of the ratio of two frequencies, whereby the frequency that forms the numerator is greater than the frequency that forms the denominator
dekadischer Logarithmus des Quotienten aus zwei Frequenzen, wobei die im Zähler stehende Frequenz größer als die Frequenz im Nenner ist
ratio of the median information content divided by the expected value for the duration of a character, expressed as a logarithm to base e
Quotient mittlerer Informationsgehalt durch den Erwartungswert für die Dauer eines Zeichens, ausgedrückt als Logarithmus zur Basis e
median information flow (from a source of information), expressed as a natural logarithm
"London Penetration Depth" characterizes the distance to which a magnetic field penetrates into a superconductor and becomes equal to 1/e times that of the magnetic field at the surface of the superconductor.
If an applied magnetic field is parallel to the plane surface of a semi-infinite superconductor, the field penetrates the superconductor according to the expression $B(x) = B(0) \exp{(\frac{-x}{\lambda_L})}$, where $B$ is magnetic flux density and $x$ is the distance from the surface.
London Penetration Depth
"Long-Range Order Parameter" is the fraction of atoms in an Ising ferromagnet having magnetic moments in one direction, minus the fraction having magnetic moments in the opposite direction.
Applicable units are those of quantitykind:Long-RangeOrderParameter
Long-Range Order Parameter
"Lorenz Coefficient" is part mof the Lorenz curve.
$L = \frac{\lambda}{\sigma T}$, where $\lambda$ is thermal conductivity, $\sigma$ is electric conductivity, and $T$ is thermodynamic temperature.
Applicable units are those of quantitykind:LorenzCoefficient
Lorenz Coefficient
$\delta = \arctan d$, where $d$ is loss factor.
Loss Angle
$\textit{Loss Factor}$ is the inverse of $\textit{Quality Factor}$ and is the ratio of the $\textit{resistance}$ and modulus of $\textit{reactance}$.
$d = \frac{1}{Q}$, where $Q$ is quality factor.
Loss Factor is the inverse of Quality Factor and is the ratio of the resistance and modulus of reactance.
Applicable units are those of quantitykind:LossFactor
Loss Factor
measure of the subjective hearing sensation on a scale extending from soft to loud; a progressive mono-frequency (single-frequency) wave of frequency 1 kHz and sound pressure level 40 dB, directed head-on to hearers is assigned the loudness 1 sone, and a tone which is identified by the listeners as being n-times as loud as that identified by 1 sone is assigned the loudness n sone
Maß für die Stärke der subjektiven Hörempfindung, welche auf einer Skala "leise-laut" in sone skaliert wird; einer frei fortschreitenden monofrequenten Welle mit der Frequenz 1 kHz und dem Schalldruckpegel 40 dB, die frontal auf die Zuhörer trifft, ist die Lautheit 1 sone zugeordnet und ein Laut, welcher von den Zuhörern als n-mal so laut wie derjenige mit 1 sone bezeichnet wird, erhält die Lautheit n sone zugeordnet
loudness
value specified in phon as a measure of the level of the subjective perception of a sound which corresponds to the sound pressure level of a reference sound specified in dB which comprises a wave coming from the front with a frequency of 1000 Hz and assessed to be just as loud as the noise
in phon angegebener Wert als Maß für die Stärke der subjektiven Wahrnehmung eines Schallvorgange, der zahlenmäßig dem in dB angegebenen Schalldruckpegel eines Referenzschalls entspricht, der aus einer frontal einfallenden ebenen Welle mit der Frequenz 1000 Hz besteht und als gleich laut wie das Geräusch empfunden wird
loudness level
"Lower Critical Magnetic Flux Density" for type II superconductors, is the threshold magnetic flux density for magnetic flux entering the superconductor.
Applicable units are those of quantitykind:MagneticFluxDensity
Lower Critical Magnetic Flux Density
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle.
$L_v = \frac{dI_v}{dA}$, where $dI_v$ is the luminous intensity of an element of the surface with the area $dA$ of the orthogonal projection of this element on a plane perpendicular to the given direction.
Applicable units are those of quantitykind:Luminance
Luminance
Luminous Efficacy is the ratio of luminous flux (in lumens) to power (usually measured in watts). Depending on context, the power can be either the radiant flux of the source's output, or it can be the total electric power consumed by the source.
$K = \frac{\Phi_v}{\Phi}$, where $\Phi_v$ is the luminous flux and $\Phi$ is the corresponding radiant flux.
Applicable units are those of quantitykind:LuminousEfficacy
Luminous Efficacy
"Luminous Emittance" is the luminous flux per unit area emitted from a surface.
Luminous Emmitance
Luminous Energy is the perceived energy of light. This is sometimes also called the quantity of light.
$Q_v = \int_{0}^{\Delta t}{\Phi_v}{dt}$, where $\Phi_v$ is the luminous flux occurring during the time interval with duration $\Delta t$.
Applicable units are those of quantitykind:LuminousEnergy
Luminous Energy
$\textit{Luminous Exitance}$ is the ratio of the luminous flux dΦ, leaving an element of the surface containing the point, by the area dA of that element.
Luminous Exitance is the ratio of the luminous flux dΦ, leaving an element of the surface containing the point, by the area dA of that element.
Quotient aus dem Lichtstrom dΦ, der ein den Punkt enthaltendes Element der Oberfläche verlässt, und der Fläche dA dieses Elementes
luminous exitance
Luminous Exposure is the time-integrated illuminance.
Applicable units are those of quantitykind:LuminousExposure
Luminous Exposure
$\textit{Luminous Flux}$, or $\textit{Luminous Power}$, is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light.
$\Phi_v = K_m \int_{0}^{\infty}{\Phi_\lambda(\lambda)}{V(\lambda)d\lambda}$, where $K_m$ is the maximum spectral luminous efficacy, $\Phi_\lambda(\lambda)$ is the spectral radiant flux, $V(\lambda)$ is the spectral luminous efficiency, and $\lambda$ is the wavelength.
Luminous Flux or Luminous Power is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light.
Applicable units are those of quantitykind:LuminousFlux
Fluks berluminositi
Lichtstrom
Světelný tok
fluctús lucis
flujo luminoso
flusso luminoso
flux lumineux
flux luminos
fluxo luminoso
fényáram
işık akısı
luminous flux
strumień świetlny
svetlobni tok
Светлинен поток
Световой поток
שטף הארה
التدفق الضوئي
شار نوری
प्रकाशीय बहाव
光束
光通量
In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of how much the incident light illuminates the surface, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. In SI derived units these are measured in $lux (lx)$ or $lumens per square metre$ ($cd \cdot m^{-2}$). In the CGS system, the unit of illuminance is the $phot$, which is equal to $10,000 lux$. The $foot-candle$ is a non-metric unit of illuminance that is used in photography.
Luminous Flux per Area
Luminous Flux Ratio (or Relative Luminous Flux or Relative Luminous Power) is the measure of the perceived power of light. It differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light. It is expressed as a percentage or fraction of full power.
Applicable units are those of quantitykind:LuminousFluxRatio
Luminous Flux Ratio
Luminous Intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle. The weighting is determined by the luminosity function, a standardized model of the sensitivity of the human eye to different wavelengths.
Applicable units are those of quantitykind:LuminousIntensity
Keamatan berluminositi
Lichtstärke
Svítivost
fényerősség
intensidad luminosa
intensidade luminosa
intensitas luminosa
intensitate luminoasă
intensità luminosa
intensité lumineuse
luminous intensity
svetilnost
ışık şiddeti
światłość
Ένταση Φωτεινότητας
Интензитет на светлината
Сила света
עוצמת הארה
شدة الإضاءة
شدت نور
प्रकाशीय तीव्रता
光度
发光强度
"Luminous Intensity Distribution" is a measure of the luminous intensity of a light source that changes according to the direction of the ray. It is normally based on some standardized distribution light distribution curves. Usually measured in Candela/Lumen (cd/lm) or (cd/klm).
Applicable units are those of quantitykind:LuminousIntensityDistribution
The minimum mass a propulsive system can deliver to a specified target or location. Most mass- delivered requirements have associated Delta-V requirements, effectively specifying the path between the two points.
Mass Delivered
A factor applied to basic mass at the lowest level of design detail available based on type and maturity of hardware according to an approved MGA depletion schedule.
Mass Growth Allowance
Requirement minus predicted value. Margin is used as a metric in risk management. Positive margin mitigates the risk of mass increases from requirements maturation and implementation, underestimated predicted system, or subsystem mass.
Mass Margin
Variation in predicted MP due to lack of definition, manufacturing variations, environment effects, or accuracy limitation of measuring devices.
Mass Property Uncertainty
The rotational inertia or resistance to change in direction or speed of rotation about a defined axis.
Applicable units are those of quantitykind:MomentOfInertia
Moment of Inertia in the Y axis
Moment of Inertia in the Z axis
"Mach Number" is a dimensionless quantity representing the speed of an object moving through air or other fluid divided by the local speed of sound. It is commonly used to represent the speed of an object when it is traveling close to or above the speed of sound. The Mach number is commonly used both with objects traveling at high speed in a fluid, and with high-speed fluid flows inside channels such as nozzles, diffusers or wind tunnels. As it is defined as a ratio of two speeds, it is a dimensionless number.
$Ma = \frac{v_o}{c_o}$, where $v_0$ is speed, and $c_o$ is speed of sound.
Applicable units are those of quantitykind:MachNumber
Mach number
Mach sayısı
Mach-Zahl
Machovo číslo
Machovo število
Nombor Mach
liczba Macha
nombre de Mach
numero di Mach
număr Mach
número de Mach
число Маха
عدد ماخ
मैक संख्या
マッハ数n
马赫
"Macroscopic Cross-section" is the sum of the cross-sections for a reaction or process of a specified type over all atoms or other entities in a given 3D domain, divided by the volume of that domain.
$\sum = n_1\sigma_1 + \cdots + n_j\sigma_j +$, where $n_j$ is the number density and $\sigma_j$ the cross-section for entities of type $j$.
Macroscopic Cross-section
"Macroscopic Total Cross-section" is the total cross-sections for all atoms or other entities in a given 3D domain, divided by the volume of that domain.
Macroscopic Total Cross-section
"Madelung Constant" is used in determining the electrostatic potential of a single ion in a crystal by approximating the ions by point charges. It is named after Erwin Madelung, a German physicist.
For a uni-univalent ionic crystal of specified structure, the binding energy $V_b$ per pair of ions is $V_b = \alpha\frac{e^2}{4\pi \varepsilon_0 a}$, where $e$ is the elementary charge, $\varepsilon_0$ is the electric constant, and $a$ is the lattice constant which should be specified.
Applicable units are those of quantitykind:MadelungConstant
Constante de Madelung
Costante di Madelung
Madelung constant
Madelung-Konstante
Stała Madelunga
constante de Madelung
постоянная Маделунга
ثابت مادلونك
ثابت مادلونگ
マーデルングエネルギー
馬德隆常數
"Magnetic Area Moment", for a magnetic dipole, is a vector quantity equal to the product of the current, the loop area, and the unit vector normal to the loop plane, the direction of which corresponds to the loop orientation. "Magnetic Area Moment" is also referred to as "Magnetic Moment".
$m = I e_n A$, where $I$ is electric current in a small closed loop, $e_n$ is a unit vector perpendicular to the loop, and $A$ is the area of the loop. The magnetic moment of a substance within a domain is the vector sum of the magnetic moments of all entities included in the domain.
Applicable units are those of quantitykind:MagneticAreaMoment
Magnetic Area Moment
"Magnetic Dipole Moment" is the magnetic moment of a system is a measure of the magnitude and the direction of its magnetism. Magnetic moment usually refers to its Magnetic Dipole Moment, and quantifies the contribution of the system's internal magnetism to the external dipolar magnetic field produced by the system (that is, the component of the external magnetic field that is inversely proportional to the cube of the distance to the observer). The Magnetic Dipole Moment is a vector-valued quantity. For a particle or nucleus, vector quantity causing an increment $\Delta W = -\mu \cdot B$ to its energy $W$ in an external magnetic field with magnetic flux density $B$.
$E_m = -m \cdot B$, where $E_m$ is the interaction energy of the molecule with magnetic diploe moment $m$ and a magnetic field with magnetic flux density $B$ or, $J_m = \mu_0 M$ where $\mu_0$ is the magnetic constant and $M$ is Magnetization.
Applicable units are those of quantitykind:MagneticDipoleMoment
Magnetic Dipole Moment
Em = -m•B, where Em is the interaction energy of the molecule with the magnetic dipole moment m and a magnetic field with the magnetic induced flux density B
Em = -m•B, wobei Em die Interaktionsenergie vom Molekül ist mit dem magnetischem Dipolmoment m und einem Magnetfeld mit der magnetischen Induktionsflussdichte B
magnetic dipole moment of a molecule
The Magnetic Field, denoted $B$, is a fundamental field in electrodynamics which characterizes the magnetic force exerted by electric currents. It is closely related to the auxillary magnetic field H (see quantitykind:AuxillaryMagneticField).
Applicable units are those of quantitykind:MagneticField
Magnetic Field
$\textit{Magnetic Field Strength}$ is a vector quantity obtained at a given point by subtracting the magnetization $M$ from the magnetic flux density $B$ divided by the magnetic constant $\mu_0$. The magnetic field strength is related to the total current density $J_{tot}$ via: $\text{rot} H = J_{tot}$.
$\mathbf{H} = \frac{\mathbf{B} }{\mu_0} - M$, where $\mathbf{B} $ is magnetic flux density, $\mu_0$ is the magnetic constant and $M$ is magnetization.
Câmp magnetic
Kekuatan medan magnetik
Magnetické pole
Manyetik alan
intensidad de campo magnético
intensidade de campo magnético
intensità di campo magnetico
intensité de champ magnétique
jakost magnetnega polja
magnetic field strength
magnetische Feldstärke
pole magnetyczne
Магнитное поле
حقل مغناطيسي
شدت میدان مغناطیسی
磁場
"Magnetic Flux" is the product of the average magnetic field times the perpendicular area that it penetrates.
$\Phi = \int_S B \cdot e_n d A$, over a surface $S$, where $B$ is magnetic flux density and $e_n dA$ is the vector surface element.
Fluks magnet
Flux d'induction magnétique
Magnetický tok
flujo magnético
flusso magnetico
flux de inducție magnetică
fluxo magnético
fluxus magneticus
magnetic flux
magnetischer Flux
magnetni pretok
manyetik akı
mágneses fluxus
strumień magnetyczny
Магнитен поток
Магнитный поток
שטף מגנטי
التدفق المغناطيسي
شار مغناطیسی
चुम्बकीय बहाव
磁束
磁通量
"Magnetic Flux Density" is a vector quantity and is the magnetic flux per unit area of a magnetic field at right angles to the magnetic force. It can be defined in terms of the effects the field has, for example by $B = F/q v \sin \theta$, where $F$ is the force a moving charge $q$ would experience if it was travelling at a velocity $v$ in a direction making an angle θ with that of the field. The magnetic field strength is also a vector quantity and is related to $B$ by: $H = B/\mu$, where $\mu$ is the permeability of the medium.
$\mathbf{F} = qv \times B$, where $F$ is force and $v$ is velocity of any test particle with electric charge $q$.
vektorielle Feldgröße B, die auf jedes geladene Teilchen, das eine Geschwindigkeit v hat, eine Kraft F ausübt, die gleich dem Produkt aus dem Vektorprodukt v x B und der elektrischen Ladung Q des Teilchens ist oder vektorielle Größe gleich dem Produkt aus der Magnetisierung M und der magnetischen Feldkonstante µ₀
Densidad de flujo magnético
Densité de flux magnétique
Ketumpatan fluks magnet
Magnetická indukce
densidade de fluxo magnético
densitas fluxus magnetici
densità di flusso magnetico
gostota magnetnega pretoka
inducție magnetică
indukcja magnetyczna
magnetic flux density
magnetische Flussdichte
manyetik akı yoğunluğu
mágneses indukció
Магнитна индукция
Магнитная индукция
צפיפות שטף מגנטי
المجال المغناطيسي
چگالی شار مغناطیسی
चुम्बकीय क्षेत्र
磁束密度
磁通量密度
inducción magnética
magnetische Induktion
field vector B which exhibits a force F on any charged particle which has a velocity v, where the force is the product of the vector product v x B and the electric charge Q of the particle or vector quantity equal to the product of the magnetization M and the magnetic constant µ₀
magnetic flux density or magnetic polarization
"Magnetic Flux per Length" is a quantity in the SI and C.G.S. Systems of Quantities.
Applicable units are those of quantitykind:MagneticFluxPerLength
Magnetic flux per length
"Magnetic Moment", for a magnetic dipole, is a vector quantity equal to the product of the current, the loop area, and the unit vector normal to the loop plane, the direction of which corresponds to the loop orientation. "Magnetic Moment" is also referred to as "Magnetic Area Moment", and is not to be confused with Magnetic Dipole Moment.
Applicable units are those of quantitykind:MagneticMoment
Magnetický dipól
Manyetik moment
Momen magnetik
dipol magnetyczny
magnetic moment
magnetisches Dipolmoment
moment magnétique
momento de dipolo magnético
momento di dipolo magnetico
Магнитный момент
دوقطبی مغناطیسی
عزم مغناطيسي
चुम्बकीय द्विध्रुव
磁偶极
磁気双極子
giromagnetic moment
momen giromagnetik
moment giromagnétique
$\text{Magnetic Polarization}$ is a vector quantity equal to the product of the magnetization $M$ and the magnetic constant $\mu_0$.
$J_m = \mu_0 M$, where $\mu_0$ is the magentic constant and $M$ is magnetization.
Magnetic Polarization
The "Magnetic Quantum Number" describes the specific orbital (or "cloud") within that subshell, and yields the projection of the orbital angular momentum along a specified axis.
Applicable units are those of quantitykind:MagneticQuantumNumber
Magnetic Quantum Number
"Length Per Unit Magnetic Flux" is the the resistance of a material to the establishment of a magnetic field in it. It is the reciprocal of $\textit{Magnetic Permeability}$, the inverse of the measure of the ability of a material to support the formation of a magnetic field within itself.
Length Per Unit Magnetic Flux is the the resistance of a material to the establishment of a magnetic field in it. It is the reciprocal of Magnetic Permeability, the inverse of the measure of the ability of a material to support the formation of a magnetic field within itself.
Applicable units are those of quantitykind:MagneticReluctivity
Magnetic Reluctivity
"Magnetic Susceptability" is a scalar or tensor quantity the product of which by the magnetic constant $\mu_0$ and by the magnetic field strength $H$ is equal to the magnetic polarization $J$. The definition given applies to an isotropic medium. For an anisotropic medium permeability is a second order tensor.
$\kappa = \frac{M}{H}$, where $M$ is magnetization, and $H$ is magnetic field strength.
Applicable units are those of quantitykind:MagneticSusceptability
Magnetic Susceptability
"Magnetic Tension" is a scalar quantity equal to the line integral of the magnetic field strength $\mathbf{H}$ along a specified path linking two points a and b.
$U_m = \int_{r_a(C)}^{r_b} \mathbf{H} \cdot dr$, where $\mathbf{H}$ is magnetic field strength and $r$ is the position vector along a given curve $C$ from point $a$ to point $b$.
Magnetic Tension is a scalar quantity equal to the line integral of the magnetic field strength H along a specified path linking two points a and b.
Applicable units are those of quantitykind:MagneticTension
Magnetic Tension
"Magnetic Vector Potential" is the vector potential of the magnetic flux density. The magnetic vector potential is not unique since any irrotational vector field quantity can be added to a given magnetic vector potential without changing its rotation. Under static conditions the magnetic vector potential is often chosen so that its divergence is zero.
$B = \text{rot} A$, where $B$ is magnetic flux density.
Applicable units are those of quantitykind:MagneticVectorPotential
Keupayaan vektor magnetik
magnetic vector potential
magnetický potenciál
magnetisches Potenzial
manyetik potansiyeli
potencial magnético
potencjał magnetyczny
potentiel magnétique
potenziale vettore magnetico
potențial magnetic
Магнитний потенциал
پتانسیل برداری مغناطیسی
磁向量势
"Magnetization" is defined as the ratio of magnetic moment per unit volume. It is a vector-valued quantity.
$M = dm/dV$, where $m$ is magentic moment of a substance in a domain with Volume $V$.
Magnetisierung
aimantation
magnetización
magnetization
magnetização
magnetizzazione
magnetyzacia
намагниченность
مغنطة
磁化
The Magnetization Field is defined as the ratio of magnetic moment per unit volume. It is a vector-valued quantity.
Magnetization Field
$\text{Magnetomotive Force}$, also referred to as ($mmf$), is the ability of an electric circuit to produce magnetic flux. Just as the ability of a battery to produce electric current is called its electromotive force or emf, mmf is taken as the work required to move a unit magnet pole from any point through any path which links the electric circuit back the same point in the presence of the magnetic force produced by the electric current in the circuit. $\text{Magnetomotive Force}$ is the scalar line integral of the magnetic field strength along a closed path.
$F_m = \oint \mathbf{H} \cdot dr$, where $\mathbf{H}$ is magnetic field strength and $r$ is position vector along a given curve $C$ from point $a$ to point $b$.
Applicable units are those of quantitykind:MagnetomotiveForce
Magnetomotive Force
In physics, mass, more specifically inertial mass, can be defined as a quantitative measure of an object's resistance to acceleration. The SI unit of mass is the kilogram ($kg$)
Hmotnost
Jisim
Masse
kütle
masa
mass
massa
masse
masă
tömeg
Μάζα
Маса
Масса
מסה
جرم
كتلة
質量
质量
The mass absorption coefficient is the linear absorption coefficient divided by the density of the absorber.
$a_m = \frac{a}{\rho}$, where $a$ is the linear absorption coefficient and $\rho$ is the mass density of the medium.
Applicable units are those of quantitykind:MassAbsorptionCoefficient
Mass Absorption Coefficient
Mass Amount of Substance
Applicable units are those of quantitykind:MassAmountOfSubstanceTemperature
Mass Amount of Substance Temperature
"Mass Attenuation Coefficient" is a measurement of how strongly a chemical species or substance absorbs or scatters light at a given wavelength, per unit mass.
$\mu_m = \frac{\mu}{\rho}$, where $\mu$ is the linear attenuation coefficient and $\rho$ is the mass density of the medium.
Applicable units are those of quantitykind:MassAttenuationCoefficient
Mass Attenuation Coefficient
Applicable units are those of quantitykind:MassBasedBloodGlucoseLevel
The "Mass Concentration" of substance B is defined as the mass of a constituent divided by the volume of the mixture .
$\rho_B = \frac{m_B}{V}$, where $m_B$ is the mass of substance $B$ and $V$ is the volume.
Applicable units are those of quantitykind:MassConcentration
Mass Concentration
"Mass Concentration of Water" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w = m/V$, where $m$ is mass of water, irrespective of the form of aggregation, and $V$ is volume. Mass concentration of water at saturation is denoted $w_{sat}$.
Mass Concentration of Water is one of a number of Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassConcentrationOfWater
Mass Concentration of Water
"Mass Concentration of Water Vapour" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w = m/V$, where $m$ is mass of water vapour and $V$ is total gas volume. Mass concentration of water vapour at saturation is denoted $v_{sat}$.
Applicable units are those of quantitykind:MassConcentrationOfWaterVapour
Mass Concentration of Water Vapour
the rate at which a specific chemical element or compound changes concentration over time, where with concentration expressed as mass per volume. SI unit is kg * m-3 * s-1
Applicable units are those of quantitykind:MassConcentrationRateOfChange
Mass Concentration Rate Of Change
The "Mass Defect", also termed mass deficit, or mass packing fraction, describes mass change (decrease) in bound systems, particularly atomic nuclei.
$B = Zm(^{1}\textrm{H}) + Nm_n - m_a$, where $Z$ is the proton number of the atom, $m(^{1}\textrm{H})$ is atomic mass of $^{1}\textrm{H}$, $N$ is the neutron number, $m_n$ is the rest mass of the neutron, and $m_a$ is the rest mass of the atom.
Mass Defect
The mass density or density of a material is its mass per unit volume.
$\rho = \frac{dm}{dV}$, where $m$ is mass and $V$ is volume.
Gostôta
Ketumpatan jisim
Massendichte
densidad
densidade
densitate
densità
densité
gęstość
hustota
mass density
плотность
الكثافة
چگالی
घनत्व
密度
jisim isipadu
massa volumica
volumenbezogene Masse
volumic mass
भार घनत्व
"Mass Energy Transfer Coefficient" is that fraction of the mass attenuation coefficient which contributes to the production of kinetic energy in charged particles.
$\frac{\mu_{tr}}{\rho} = -\frac{1}{\rho}\frac{1}{R}\frac{dR_{tr}}{dl}$, where $dR_{tr}$ is the mean energy that is transferred to kinetic energy of charged particles by interactions of the incident radiation $R$ in traversing a distance $dl$ in the material of density $\rho$.
Applicable units are those of quantitykind:MassEnergyTransferCoefficient
Mass Energy Transfer Coefficient
The "Mass Excess" of a nuclide is the difference between its actual mass and its mass number in atomic mass units. It is one of the predominant methods for tabulating nuclear mass.
$\Delta = m_a - Am_u$, where $m_a$ is the rest mass of the atom, $A$ is its nucleon number, and $m_u$ is the unified atomic mass constant.
Mass Excess
"Mass Flow Rate" is a measure of Mass flux. The common symbol is $\dot{m}$ (pronounced $m-dot$), although sometimes $\mu$ is used. The SI units are $kg s-1$.
$q_m = \frac{dm}{dt}$, where $m$ is mass and $t$ is time.
Applicable units are those of quantitykind:MassFlowRate
Mass Flow Rate
product of flow velocity and density
Produkt aus Strömungsgeschwindigkeit und Dichte
Applicable units are those of quantitykind:MassPerAreaTime
mass flux density
The "Mass Fraction" is the fraction of one substance with mass to the mass of the total mixture .
$w_B = \frac{m_B}{m}$, where $m_B$ is the mass of substance $B$ and $m$ is the total.
Applicable units are those of quantitykind:MassFraction
Mass Fraction
"Mass Fraction of Dry Matter" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w_d= 1 - w_{h2o}$, where $w_{h2o}$ is mass fraction of water.
"Mass Fraction of Dry Matter" is one of a number of Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassFractionOfDryMatter
Mass Fraction of Dry Matter
"Mass Fraction of Water" is one of a number of $\textit{Concentration}$ quantities defined by ISO 80000.
$w_{H_2o} = \frac{u}{1+u}$, where $u$ is mass ratio of water to dry water.
Mass Fraction of Water is one of a number of Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassFractionOfWater
Mass Fraction of Water
The "Mass Number" (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. Nuclides with the same value of $A$ are called isobars.
$A = Z + N$, where $Z$ is the atomic number and $N$ is the neutron number.
Applicable units are those of quantitykind:MassNumber
Mass Number
Mass Of Electrical Power Supply
Mass Of Solid Booster
Earth mass is the unit of mass equal to that of the Earth. Earth mass is often used to describe masses of rocky terrestrial planets.
Mass Of The Earth
The area density (also known as areal density, surface density, or superficial density) of a two-dimensional object is calculated as the mass per unit area. The SI derived unit is: kilogram per square metre ($kg \cdot m^{-2}$).
Mass per Area
In Physics and Engineering, mass flux is the rate of mass flow per unit area. The common symbols are $j$, $J$, $\phi$, or $\Phi$ (Greek lower or capital Phi), sometimes with subscript $m$ to indicate mass is the flowing quantity. Its SI units are $ kg s^{-1} m^{-2}$.
$j_m = \lim\limits_{A \rightarrow 0}\frac{I_m}{A}$
Mass per Area Time
The mass-to-charge ratio ratio ($m/Q$) is a physical quantity that is widely used in the electrodynamics of charged particles, for example, in electron optics and ion optics. The importance of the mass-to-charge ratio, according to classical electrodynamics, is that two particles with the same mass-to-charge ratio move in the same path in a vacuum when subjected to the same electric and magnetic fields. Its SI units are $kg/C$, but it can also be measured in Thomson ($Th$).
Applicable units are those of quantitykind:MassPerElectricCharge
Mass per Electric Charge
Mass per Energy ($m/E$) is a physical quantity that bridges mass and energy. The SI unit is $kg/J$ or equivalently $s^2/m^2$.
Mass per Energy is a physical quantity that can be used to relate the energy of a system to its mass.
Applicable units are those of quantitykind:MassPerEnergy
Mass per Energy
Linear density, linear mass density or linear mass is a measure of mass per unit of length, and it is a characteristic of strings or other one-dimensional objects. The SI unit of linear density is the kilogram per metre ($kg/m$).
Applicable units are those of quantitykind:MassPerLength
Mass per Length
Applicable units are those of quantitykind:MassPerTime
Mass per Time
In aerospace engineering, mass ratio is a measure of the efficiency of a rocket. It describes how much more massive the vehicle is with propellant than without; that is, it is the ratio of the rocket's wet mass (vehicle plus contents plus propellant) to its dry mass (vehicle plus contents)
Mass Ratio
"Mass Ratio of Water to Dry Matter" is one of a number of $\textit{Concentration Ratio}$ quantities defined by ISO 80000.
$u = m/m_d$, where $m$ is mass of water vapour and $m_d$ is mass of dry matter. Mass ratio of water to dry matter at saturation is denoted $u_{sat}$.
Mass Ratio of Water to Dry Matter is one of a number of Concentration Ratio quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassRatioOfWaterToDryMatter
Mass Concentration of Water To Dry Matter
"Mass Ratio of Water Vapour to Dry Gas" is one of a number of $\textit{Concentration Ratio}$ quantities defined by ISO 80000.
$x = m/m_d$, where $m$ is mass of water vapour and $m_d$ is mass of dry gas. Mass ratio of water vapour to dry gas at saturation is denoted $x_{sat}$.
Mass Ratio of Water Vapour to Dry Gas is one of a number of Concentration Ratio quantities defined by ISO 80000.
Applicable units are those of quantitykind:MassRatioOfWaterVapourToDryGas
Mass Ratio of Water Vapour to Dry Gas
electrical current intensity divided by the associated mass
elektrische Stromstärke dividiert durch die zugehörige Masse
mass-related electrical current
the rate at which a specific chemical element or compound is processed or transformed within an ecosystem, calculated per unit mass of the relevant biological material. Unreduced, SI unit is kg * kg-1 * s-1
the rate at which a specific chemical element or compound is processed or transformed within an ecosystem, calculated per unit mass of the relevant biological material. Unreduced, SI unit is g * g-1 * s-1
Applicable units are those of quantitykind:MassSpecificBiogeochemicalRate
Mass Specific Biogeochemical Rate
Applicable units are those of quantitykind:MassStoppingPower
Applicable units are those of quantitykind:MassTemperature
Mass Temperature
"Massic Activity" is the activity divided by the total mass of the sample.
Massic Activity
Applicable units are those of quantitykind:MassicElectricCurrent
ratio of heat capacity divided by mass
Quotient Wärmekapazität dividiert durch Masse
Applicable units are those of quantitykind:MassicHeatCapacity
massic heat capacity
ratio energy divided by time and related mass
Quotient Energie durch Zeit und durch zugehöriger Masse
massic power
ratio of torque divided by the mass to be moved
Quotient Drehmoment dividiert durch die Masse, die bewegt oder befördert wird
massic torque
The Massieu function, $\Psi$, is defined as: $\Psi = \Psi (X_1, \dots , X_i, Y_{i+1}, \dots , Y_r )$, where for every system with degree of freedom $r$ one may choose $r$ variables, e.g. , to define a coordinate system, where $X$ and $Y$ are extensive and intensive variables, respectively, and where at least one extensive variable must be within this set in order to define the size of the system. The $(r + 1)^{th}$ variable,$\Psi$ , is then called the Massieu function.
$J = -A/T$, where $A$ is Helmholtz energy and $T$ is thermodynamic temperature.
Massieu Function
Maximum Expected Operating Thrust
Max Operating Thrust
Max Sea Level Thrust
"Maximum Beta-Particle Energy" is the maximum energy of the energy spectrum in a beta-particle disintegration process.
Maximum Beta-Particle Energy
Maximum Expected Operating Pressure
Maximum Operating Pressure
The "Mean Energy Imparted", is the average energy imparted to irradiated matter.
To the matter in a given domain, $\bar{\varepsilon} = R_{in} - R_{out} + \sum Q$, where $R_{in}$ is the radiant energy of all those charged and uncharged ionizing particles that enter the domain, $R_{out}$ is the radiant energy of all those charged and uncharged ionizing particles that leave the domain, and $\sum Q$ is the sum of all changes of the rest energy of nuclei and elementary particles that occur in that domain.
Mean Energy Imparted
"Mean Free Path" is the average distance travelled by a moving particle (such as an atom, a molecule, a photon) between successive impacts (collisions) which modify its direction or energy or other particle properties.
Mean Free Path
The "Mean Lifetime" is the average length of time that an element remains in the set of discrete elements in a decaying quantity, $N(t)$.
$\tau = \frac{1}{\lambda}$, where $\lambda$ is the decay constant.
Mean Lifetime
"Mean Linear Range" is, in a given material, for specified charged particles of a specified energy, the average displacement of the particles before they stop. That is, the mean totl rectified path length travelled by a particle in the course of slowing down to rest (or to some suitable cut-off energy) in a given substance under specified conditions averaged over a group of particles having the same initial energy.
Mean Linear Range
"Mean Mass Range" is the mean linear range multiplied by the mass density of the material.
$R_\rho = R\rho$, where $R$ is the mean linear range and $\rho$ is the mass density of the sample.
Applicable units are those of quantitykind:MeanMassRange
Mean Mass Range
Mechanical Energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.
$E = T + V$, where $T$ is kinetic energy and $V$ is potential energy.
Mechanical Energy
Mechanical Impedance
Applicable units are those of quantitykind:MechanicalMobility
Mechanical Mobility
Mechanical surface impedance at a surface, is the complex quotient of the total force on the surface by the component of the average sound particle velocity at the surface in the direction of the force
$Z_m = Z_a A^2$, where $A$ is the area of the surface considered and $Z_a$ is the acoustic impedance.
There are various interpretations of MechanicalSurfaceImpedance: Pressure/Velocity - https://apps.dtic.mil/sti/pdfs/ADA315595.pdf, Force / Speed - https://www.wikidata.org/wiki/Q6421317, and (Pressure / Velocity)**0.5 - https://www.sciencedirect.com/topics/engineering/mechanical-impedance. We are seeking a resolution to these differences.
Mechanical surface impedance
at a point of a body upon which a force acts which attempts to change the shape of the body, the limit value of the ratio between the force and area of a flat surface around this point when the dimensions approach zero
an einem Punkt eines Körpers, an dem eine Kraft angreift, welche die Form des Körpers zu verändern sucht, der Grenzwert des Quotienten Kraft durch Fläche einer ebenen Oberfläche um diesen Punkt, wenn deren Abmessungen gegen null gehen
mechanical tension
A temperature that is the one at which a substance will change its physical state from a solid to a liquid. It is also the temperature where the solid and liquid forms of a pure substance can exist in equilibrium.
Applicable units are those of quantitykind:MeltingPoint
Melting Point Temperature
A "Micro Canonical Partition Function" applies to a micro canonical ensemble, in which the system is allowed to exchange heat with the environment at fixed temperature, volume, and a fixed number of particles.
$\Omega = \sum_r 1$, where the sum is over all quantum states consistent with given energy. volume, external fields, and content.
Micro Canonical Partition Function
Microbial Formation
"Migration Area" is the sum of the slowing-down area from fission energy to thermal energy and the diffusion area for thermal neutrons.
Migration Area
"Migration Length" is the square root of the migration area.
$M = \sqrt{M^2}$, where $M^2$ is the migration area.
Migration Length
"Mobility" characterizes how quickly a particle can move through a metal or semiconductor, when pulled by an electric field. The average drift speed imparted to a charged particle in a medium by an electric field, divided by the electric field strength.
Beweglichkeit
mobilidade
mobility
mobilità
mobilité
mobilność
movilidad
قابلية التحرك
移動度
迁移率
Mobilität
"MobilityRatio" describes permeability of a porous material to a given phase divided by the viscosity of that phase.
$b = \frac{\mu_n}{\mu_p}$, where $\mu_n$ and $\mu_p$ are mobilities for electrons and holes, respectively.
Applicable units are those of quantitykind:MobilityRatio
Mobility Ratio
"Modulus Of Admittance" is the absolute value of the quantity "admittance".
$Y = \left | \underline{Y} \right |$, where $\underline{Y}$ is admittance.
Modulus Of Admittance
The Modulus of Elasticity is the mathematical description of an object or substance's tendency to be deformed elastically (that is, non-permanently) when a force is applied to it.
$E = \frac{\sigma}{\varepsilon}$, where $\sigma$ is the normal stress and $\varepsilon$ is the linear strain.
Applicable units are those of quantitykind:ModulusOfElasticity
Modulus of Elasticity
"Modulus Of Impedance} is the absolute value of the quantity $\textit{impedance}$. Apparent impedance is defined more generally as the quotient of rms voltage and rms electric current; it is often denoted by $Z$.
$Z = \left | \underline{Z} \right |$, where $\underline{Z}$ is impedance.
Applicable units are those of quantitykind:ModulusOfImpedance
Modulus Of Impedance
Modulus of Linear Subgrade Reaction is a measure for modulus of linear subgrade reaction, which expresses the elastic bedding of a linear structural element per length, such as for a beam. It is typically measured in N/m^2
Applicable units are those of quantitykind:ModulusOfLinearSubgradeReaction
Modulus of Linear Subgrade Reaction
Modulus of Rotational Subgrade Reaction is a measure for modulus of rotational subgrade reaction, which expresses the rotational elastic bedding of a linear structural element per length, such as for a beam. It is typically measured in Nm/(m*rad).
Applicable units are those of quantitykind:ModulusOfRotationalSubgradeReaction
Modulus of Rotational Subgrade Reaction
Modulus of Subgrade Reaction is a geotechnical measure describing interaction between foundation structures and the soil. May also be known as bedding measure. Usually measured in N/m3.
Applicable units are those of quantitykind:ModulusOfSubgradeReaction
Modulus of Subgrade Reaction
Applicable units are those of quantitykind:VolumeFlowRate
Moisture Diffusivity
The "Molality of Solute" of a solution is defined as the amount of substance of solute divided by the mass in kg of the solvent.
$b_B = \frac{n_B}{m_a}$, where $n_B$ is the amount of substance and $m_A$ is the mass.
Applicable units are those of quantitykind:MolalityOfSolute
Molality of Solute
"Molar Absorption Coefficient" is a spectrophotometric unit indicating the light a substance absorbs with respect to length, usually centimeters, and concentration, usually moles per liter.
$x = aV_m$, where $a$ is the linear absorption coefficient and $V_m$ is the molar volume.
Applicable units are those of quantitykind:MolarAbsorptionCoefficient
Molar Absorption Coefficient
Applicable units are those of quantitykind:MolarAngularMomentum
Molar Angular Momentum
"Molar Attenuation Coefficient" is a measurement of how strongly a chemical species or substance absorbs or scatters light at a given wavelength, per amount of substance.
$\mu_c = -\frac{\mu}{c}$, where $\mu$ is the linear attenuation coefficient and $c$ is the amount-of-substance concentration.
Applicable units are those of quantitykind:MolarAttenuationCoefficient
Molar Attenuation Coefficient
"Molar Conductivity" is the conductivity of an electrolyte solution divided by the molar concentration of the electrolyte, and so measures the efficiency with which a given electrolyte conducts electricity in solution.
$\Gamma_m = \frac{x}{c_B}$, where $x$ is the electrolytic conductivity and $c_B$ is the amount-of-substance concentration.
Applicable units are those of quantitykind:MolarConductivity
Molar Conductivity
quantity whose value is inversely proportional to the quantity of material
Größe, deren Wert sich umgekehrt proportional zu Stoffmengenwert verhält
molar density
"Molar Energy" is the total energy contained by a thermodynamic system. The unit is $$J/mol$$, also expressed as $$joule/mole$$, or $$joules per mole$$. This unit is commonly used in the SI unit system. The quantity has the dimension of $$M \cdot L^2 \cdot T^{-2} \cdot N^{-1}$$ where $$M$$ is mass, $$L$$ is length, $$T$$ is time, and $$N$$ is amount of substance.
$U_m = \frac{U}{n}$, where $U$ is internal energy and $n$ is amount of substance.
Molar Energy
The "Standard Molar Entropy" is the entropy content of one mole of substance, under standard conditions (not standard temperature and pressure STP).
$S_m = \frac{S}{n}$, where $S$ is entropy and $n$ is amount of substance.
Applicable units are those of quantitykind:MolarEntropy
Molar Entropy
Molar Flow Rate is a measure of the amount of substance (the number of molecules) that passes through a given area perpendicular to the flow in a given time. Typically this area is constrained, for example a section through a pipe, but it could also apply to an open flow.
Applicable units are those of quantitykind:MolarFlowRate
Molar Flow Rate
the rate at which moles of a substance pass through a unit area per unit time. It is used for describing the flow of materials in terms of the transport of molecules or particles rather than bulk mass. The SI units are mol m-2 s-1
Applicable units are those of quantitykind:MolarFluxDensity
Molar Flux Density
Applicable units are those of quantitykind:MolarFluxDensityVariance
Molar Flux Density Variance
Variance for NEON Molar Flux Denisity data measured in unit:MicroMOL-PER-M2-SEC
Molar Flux Density Variance, NEON
"Molar Heat Capacity" is the amount of heat energy required to raise the temperature of 1 mole of a substance. In SI units, molar heat capacity (symbol: cn) is the amount of heat in joules required to raise 1 mole of a substance 1 Kelvin.
$C_m = \frac{C}{n}$, where $C$ is heat capacity and $n$ is amount of substance.
Applicable units are those of quantitykind:MolarHeatCapacity
Molar Heat Capacity
In chemistry, the molar mass M is defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. It is a physical property of a given substance. The base SI unit for molar mass is $kg/mol$.
Applicable units are those of quantitykind:MolarMass
Jisim molar
Masa molowa
Masă molară
Molmasse
Molární hmotnost
masa molar
massa molar
massa molare
masse molaire
molar kütle
molar mass
molska masa
Молярная масса
جرم مولی
كتلة مولية
मोलर द्रव्यमान
モル質量
摩尔质量
molare Masse
stoffmengenbezogene Masse
material-specific quantity resulting as the specific angle of rotation of a substance for a particular wavelength and a particular temperature from the relationship: ratio between measured angle of rotation divided by the concentration of material and the covered path
materialspezifische Größe, die sich als spezifischer Drehwinkel einer Substanz für eine bestimmte Wellenlänge und eine bestimmte Temperatur ergibt durch die Beziehung: Quotient aus gemessener Drehwinkel dividiert durch die Stoffmenegenkonzentration und die durchstrahlte Wegstrecke
molar optical rotational ability
The "Molar Optical Rotatory Power" Angle of optical rotation divided by the optical path length through the medium and by the amount concentration giving the molar optical rotatory power.
$\alpha_n = \alpha \frac{A}{n}$, where $\alpha$ is the angle of optical rotation, and $n$ is the amount of substance of the optically active component in the path of a linearly polarized light beam of cross sectional area $A$.
Applicable units are those of quantitykind:MolarOpticalRotatoryPower
Molar Optical Rotatory Power
A quantity kind that is a measure of the total polarizability of a mole of substance that depends on the temperature, the index of refraction and the pressure.
Applicable units are those of quantitykind:MolarRefractivity
Molar Refractivity
thermal capacity divided by the amount of substance
auf die Stoffmenge bezogene Wärmekapazität
molar thermal capacity
energy in relation to the amount of a substance
auf die Stoffmenge bezogene Energie
molar thermodynamic energy
The molar volume, symbol $V_m$, is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. It is equal to the molar mass ($M$) divided by the mass density ($\rho$). It has the SI unit cubic metres per mole ($m^{1}/mol$). For ideal gases, the molar volume is given by the ideal gas equation: this is a good approximation for many common gases at standard temperature and pressure. For crystalline solids, the molar volume can be measured by X-ray crystallography.
$V_m = \frac{V}{n}$, where $V$ is volume and $n$ is amount of substance.
Applicable units are those of quantitykind:MolarVolume
Isipadu molar
Molvolumen
molar hacim
molar volume
molski volumen
molární objem
volum molar
volume molaire
volume molar
volume molare
volumen molar
Молярный объём
حجم مولي
حجم مولی
モル体積
摩尔体积
molares Volumen
stoffmengenbezogenes Volumen
In chemistry, the mole fraction of a component in a mixture is the relative proportion of molecules belonging to the component to those in the mixture, by number of molecules. It is one way of measuring concentration.
Mole Fraction
The "Molecular Concentration" of substance B is defined as the number of molecules of B divided by the volume of the mixture
$C_B = \frac{N_B}{V}$, where $N_B$ is the number of molecules of $B$ and $V$ is the volume.
Molecular Concentration
The molecular mass, or molecular weight of a chemical compound is the mass of one molecule of that compound, relative to the unified atomic mass unit, u. Molecular mass should not be confused with molar mass, which is the mass of one mole of a substance.
Applicable units are those of quantitykind:MolecularMass
Molecular Mass
Molecules in a fluid close to a solid boundary sometime strike the boundary and transfer momentum to it. Molecules further from the boundary collide with molecules that have struck the boundary, further transferring the change in momentum into the interior of the fluid. This transfer of momentum is molecular viscosity. Molecules, however, travel only micrometers between collisions, and the process is very inefficient for transferring momentum even a few centimeters. Molecular viscosity is important only within a few millimeters of a boundary. The coefficient of molecular viscosity has the same value as the dynamic viscosity.
Molecular Viscosity
Moment of force (often just moment) is the tendency of a force to twist or rotate an object.
$M = r \cdot F$, where $r$ is the position vector and $F$ is the force.
Applicable units are those of quantitykind:MomentOfForce
Moment of Force
$I_Q = \int r^2_Q dm$, where $r_Q$ is the radial distance from a $Q-axis$ and $m$ is mass.
Eylemsizlik momenti
Massenträgheitsmoment
Momen inersia
Moment bezwładności
Moment de inerție
Moment setrvačnosti
moment d'inertie
moment of inertia
momento de inercia
momento de inércia
momento di inerzia
Момент инерции
عزم القصور الذاتي
گشتاور لختی
जड़त्वाघूर्ण
慣性モーメント
轉動慣量
The momentum of a system of particles is given by the sum of the momentums of the individual particles which make up the system or by the product of the total mass of the system and the velocity of the center of gravity of the system. The momentum of a continuous medium is given by the integral of the velocity over the mass of the medium or by the product of the total mass of the medium and the velocity of the center of gravity of the medium.
Applicable units are those of quantitykind:Momentum
Impuls
Momentum
cantidad de movimiento
gibalna količina
hybnost
impuls
momento linear
momentum
pęd
quantità di moto
quantité de mouvement
импульс
تکانه
زخم الحركة
动量
運動量
Applicable units are those of quantitykind:MomentumPerAngle
Momentum per Angle
Morbidity rate is a measure of the incidence of a disease in a particular population, scaled to the size of that population, per unit of time.
Applicable units are those of quantitykind:MorbidityRate
Morbidity Rate
Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time.
Applicable units are those of quantitykind:MortalityRate
Mortality Rate
quantitiy/variable which identifies a characteristic of a motor
Größe, die eine Eigenschaft eines Motors kennzeichnet
motor constant
The "Multiplication Factor" is the ratio of the total number of fission or fission-dependent neutrons produced in a time interval to the total number of neutrons lost by absorption and leakage during the same interval.
Multiplication Factor
$\textit{Mutual Inductance}$ is the non-diagonal term of the inductance matrix. For two loops, the symbol $M$ is used for $L_{12}$.
$L_{mn} = \frac{\Psi_m}{I_n}$, where $I_n$ is an electric current in a thin conducting loop $n$ and $\Psi_m$ is the linked flux caused by that electric current in another loop $m$.
Mutual Inductance
The amount of propellant mass within a stage that is available for impulse for use in nominal payload performance prediction. This mass excludes loaded propellant that has been set aside for off- nominal performance behavior (FPR and fuel bias).
Nominal Ascent Propellant Mass
Napierian Absorbance is the natural (Napierian) logarithm of the reciprocal of the spectral internal transmittance.
$A_e(\lambda) = -ln(\tau(\lambda))$, where $\tau$ is the transmittance at a given wavelength $\lambda$.
Applicable units are those of quantitykind:NapierianAbsorbance
Napierian Absorbance
"Neel Temperature" is the critical thermodynamic temperature of an antiferromagnet.
Neel Temperature
ratio between two physical variables of the same type, expressed as a number which describes the relationship between these variables where the units are cancelled against each other
Quotient aus zwei physikalischen Größen gleicher Art als Zahl, welche das Verhältnis dieser Größen zueinander ausdrückt, wobei die einheiten gegeneinander gekürzt sind
neutral ratio
$D_n = -\frac{J_x}{\frac{\partial dn}{\partial dx}}$, where $J_x$ is the $x-component$ of the particle current and $n$ is the particle number density.
Applicable units are those of quantitykind:NeutronDiffusionCoefficient
The neutron diffusion length is equivalent to the relaxation length, that is, to the distance, in which the neutron flux decreases by a factor e
Neutron Diffusion Length
"Neutron Number", symbol $N$, is the number of neutrons in a nuclide. Nuclides with the same value of $N$ but different values of $Z$ are called isotones. $N - Z$ is called the neutron excess number.
Applicable units are those of quantitykind:NeutronNumber
Neutronenzahl
Neutronové číslo
Nombor neutron
Nombre de neutrons
liczba neutronowa
neutron number
numero neutronico
nötron snumarası
número de neutrons
número neutrónico
число нейтронов
عدد النيوترونات
عدد نوترون
中子數
The "Neutron Yield per Absorption" is the average number of fission neutrons, both prompt and delayed, emitted per neutron absorbed in a fissionable nuclide or in a nuclear fuel, as specified.
Applicable units are those of quantitykind:NeutronYieldPerAbsorption
Neutron Yield per Absorption
The "Neutron Yield per Fission" is the average number of fission neutrons, both prompt and delayed, emitted per fission event.
Applicable units are those of quantitykind:NeutronYieldPerFission
Neutron Yield per Fission
The "Non-Leakage Probability" is the probability that a neutron will not escape from the reactor during the slowing-down process or while it diffuses as a thermal neutron
Applicable units are those of quantitykind:Non-LeakageProbability
Non-Leakage Probability
"Non-active Power", for a two-terminal element or a two-terminal circuit under periodic conditions, is the quantity equal to the square root of the difference of the squares of the apparent power and the active power.
$Q^{'} = \sqrt{{\left | \underline{S} \right |}^2 - P^2}$, where $\underline{S}$ is apparent power and $P$ is active power.
Non-active Power
"NonNegativeLength" is a measure of length greater than or equal to zero.
Positive Length
Normal stress is defined as the stress resulting from a force acting normal to a body surface. Normal stress can be caused by several loading methods, the most common being axial tension and compression, bending, and hoop stress.
$\sigma = \frac{dF_n}{dA}$, where $dF_n$ is the normal component of force and $dA$ is the area of the surface element.
Normal Stress
A "Normalized Dimensionless Ratio" is a dimensionless ratio ranging from 0.0 to 1.0
Positive Dimensionless Ratio
Cross-sectional area of the nozzle at the throat.
Nozzle Throat Cross-sectional Area
Nozzle Throat Diameter
Nozzle Throat Pressure
Nozzle Walls Thrust Reaction
"Nuclear Quadrupole Moment" is a quantity that characterizes the deviation from spherical symmetry of the electrical charge distribution in an atomic nucleus.
$Q = (\frac{1}{e}) \int (3z^2 - r^2)\rho(x, y, z)dV$, in the quantum state with the nuclear spin in the field direction $(z)$, where $\rho(x, y, z)$ is the nuclear electric charge density, $e$ is the elementary charge, $r^2 = x^2 + y^2 + z^2$, and $dV$ is the volume element $dx$ $dy$ $dz$.
Applicable units are those of quantitykind:NuclearQuadrupoleMoment
Nuclear Quadrupole Moment
"Nuclear Radius" is the conventional radius of sphere in which the nuclear matter is included
This quantity is not exactly defined. It is given approximately for nuclei in their ground state only by $R = r_0 A^{\frac{1}{3}}$, where $r_0 \approx 1.2 x 10^{-15} m$ and $A$ is the nucleon number.
Nuclear Radius
The "Spin Quantum Number" describes the spin (intrinsic angular momentum) of the electron within that orbital, and gives the projection of the spin angular momentum S along the specified axis
$I^2 = \hbar^2 I(I + 1)$, where $\hbar$ is the Planck constant.
Applicable units are those of quantitykind:NuclearSpinQuantumNumber
Spin Quantum Number
Number of nucleons in an atomic nucleus.A = Z+N. Nuclides with the same value of A are called isobars.
Applicable units are those of quantitykind:NucleonNumber
Nombor nukleon
Nukleonenzahl
Nukleové číslo
liczba masowa
nombre de masse
nucleon number
numero di massa
número de massa
número másico
nükleon numarası
عدد جرمی
عدد كتلي
質量数
质量数
Massenzahl
kütle numarası
mass number
nombor jisim
numero di nucleoni
In physics, astronomy, and chemistry, number density (symbol: n) is a kind of quantity used to describe the degree of concentration of countable objects (atoms, molecules, dust particles, galaxies, etc.) in the three-dimensional physical space.
$n = \frac{N}{V}$, where $N$ is the number of particles and $V$ is volume.
Number Density
"Number of Particles", also known as the particle number, of a thermodynamic system, conventionally indicated with the letter N, is the number of constituent particles in that system.
Applicable units are those of quantitykind:NumberOfParticles
Number of Particles
"Olfactory Threshold" are thresholds for the concentrations of various classes of smell that can be detected.
Olfactory Threshold
In the context of mechanical systems, "opening ratio" might refer to the proportion of time or the extent to which a valve or gate is open relative to its maximum capacity.
Applicable units are those of quantitykind:OpeningRatio
Opening Ratio
Angular momentum of the orbit per mass of the vehicle
Orbital Angular Momentum per Mass
The "Principal Quantum Number" describes the electron shell, or energy level, of an atom. The value of $n$ ranges from 1 to the shell containing the outermost electron of that atom.
$l^2 = \hbar^2 l(l + 1), l = 0, 1, ..., n - 1$, where $l_i$ refers to a specific particle $i$.
Applicable units are those of quantitykind:OrbitalAngularMomentumQuantumNumber
Orbital Angular Momentum Quantum Number
Orbital Radial Distance
"Order of Reflection" is $n$ in the Bragg's Law equation.
Applicable units are those of quantitykind:OrderOfReflection
Order of Reflection
The "Osmotic Coefficient" is a quantity which characterises the deviation of a solvent from ideal behavior.
$\varphi = -(M_A\sum b_B)^{-1} \ln a_A$, where $M_A$ is the molar mass of the solvent $A$, $\sum$ denotes summation over all the solutes, $b_B$ is the molality of solute $B$, and $a_A$ is the activity of solvent $A$.
Applicable units are those of quantitykind:OsmoticCoefficient
Osmotic Coefficient
The "Osmotic Concentration" is the moles of an osmotically active entity (solute) in the volume of a solution.
$osmolarity = \sum_{i} \varphi_i n_i C_i, where \varphi is the osmotic coefficient of the solution n, is the number of particles (e.g. ions), C is the molar concentration of the solute, and i is the index of solute$
Osmotic Concentration
The "Osmotic Pressure" is the pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.
Osmotický tlak
Tekanan osmotik
osmotic pressure
osmotischer Druck
ozmotik basıç
presión osmótica
pression osmotique
pressione osmotica
pressão osmótica
فشار اسمزی
渗透压
Additional distance traveled by a rocket because Of excessive initial velocity.
Over-range distance
Sum of the basic mass and the MGA. Current prediction of the final mass based on the current requirements and design.
Predicted Mass
The quantity kind $\textit{Product of Inertia}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
A measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Product of Inertia
The quantity kind $\textit{Product of Inertia in the X axis}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Product of Inertia in the X axis
The quantity kind $\textit{Product of Inertia in the Y axis}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
The quantity kind 'Product of Inertia in the Y axis' is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Product of Inertia in the Y axis
The quantity kind $\textit{Product of Inertia in the Z axis}$ is a measure of a body's dynamic (or coupled) imbalance resulting in a precession when rotating about an axis other than the body's principal axis.
Product of Inertia in the Z axis
The "Packing Fraction" is the fraction of volume in a crystal structure that is occupied by atoms.
$f = \frac{\Delta_r}{A}$, where $\Delta_r$ is the relative mass excess and $A$ is the nucleon number.
Applicable units are those of quantitykind:PackingFraction
Packing Fraction
The quantity kind $\textit{Partial Pressure}$ is the pressure that the gas would have if it alone occupied the volume of the mixture at the same temperature.
$p_B = x_B \cdot p$, where $x_B$ is the amount-of-substance fraction of substance $B$ and $p$ is the total pressure.
"Partial Pressure" is the pressure that the gas would have if it alone occupied the volume of the mixture at the same temperature.
Partial Pressure
The quantity kind $\textit{Particle Current}$ can be used to describe the net number of particles passing through a surface in an infinitesimal time interval.
$\int J \cdot e_n dA = \frac{dN}{dt}$, where $e_ndA$ is the vector surface element, $N$ is the net number of particles passing over a surface, and $dt$ describes the time interval.
"Particle Current" can be used to describe the net number of particles passing through a surface in an infinitesimal time interval.
Particle Current
The quantity kind $\textit{Particle Current Density}$ is a vector whose component is perpendicular to a surface equal to the net number of particles crossing that surface in the positive direction per unit area and per unit time.
Vektor, dessen Komponente senkrecht zu einer Fläche gleich der Nettoanzahl von Teilchen ist, die flächen- und zeitbezogen in positiver Richtung durch diese Fläche hindurchgehen
particle current density
The quantity kind $\textit{Particle Fluence}$ is the total number of particles that intersect a unit area in a specific time interval of interest, and has units of $m^{-2}$ (number of particles per meter squared).
$\Phi = \frac{dN}{dA}$, where $dN$ describes the number of particles incident on a small spherical domain at a given point in space, and $dA$ describes the cross-sectional area of that domain.
"Particle Fluence" is the total number of particles that intersect a unit area in a specific time interval of interest, and has units of /m2 (number of particles per meter squared).
Applicable units are those of quantitykind:ParticleFluence
Particle Fluence
"Particle Fluence Rate" can be defined as the total number of particles (typically Gamma Ray Photons ) crossing over a sphere of unit cross section which surrounds a Point Source of Ionising Radiation.
$\theta = \frac{d\Phi}{dt}$, where $d\Phi$ is the increment of the particle fluence during an infinitesimal time interval with duration $dt$.
Applicable units are those of quantitykind:ParticleFluenceRate
Particle Fluence Rate
The "Particle Number Density" is obtained by dividing the particle number of a system by its volume.
$n = \frac{N}{V}$, where $N$ is the number of particles in the 3D domain with the volume $V$.
Particle Number Density
"Particle Position Vector" is the position vector of a particle.
Particle Position Vector
"Particle Source Density" is the rate of production of particles in a 3D domain divided by the volume of that element.
Applicable units are those of quantitykind:ParticleSourceDensity
Particle Source Density
Path Length
Payload mass is the mass of the payload carried by the craft. In a multistage spacecraft the payload mass of the last stage is the mass of the payload and the payload masses of the other stages are considered to be the gross masses of the next stages.
Payload Mass
The payload ratio is defined as the mass of the payload divided by the empty mass of the structure. Because of the extra cost involved in staging rockets, given the choice, it's often more economic to use few stages with a small payload ratio rather than more stages each with a high payload ratio.
Payload Ratio
"Peltier Coefficient" represents how much heat current is carried per unit charge through a given material. It is the heat power developed at a junction, divided by the electric current flowing from substance a to substance b.
Peltier Coefficient
Duration of one cycle of a periodic phenomenon.
Applicable units are those of quantitykind:Period
Period
Applicable units are those of quantitykind:Permeability
The ratio of the effective permeability of a porous phase to the absolute permeability.
Applicable units are those of quantitykind:PermeabilityRatio
Permeability Ratio
"Permeance" is the inverse of reluctance. Permeance is a measure of the quantity of flux for a number of current-turns in magnetic circuit. A magnetic circuit almost acts as though the flux is "conducted", therefore permeance is larger for large cross sections of a material and smaller for longer lengths. This concept is analogous to electrical conductance in the electric circuit.
$\Lambda = \frac{1}{R_m}$, where $R_m$ is reluctance.
Applicable units are those of quantitykind:Permeance
Permeance
"Permittivity" is a physical quantity that describes how an electric field affects, and is affected by a dielectric medium, and is determined by the ability of a material to polarize in response to the field, and thereby reduce the total electric field inside the material. Permittivity is often a scalar valued quantity, however in the general case it is tensor-valued.
$\epsilon = \frac{D}{E}$, where $D$ is electric flux density and $E$ is electric field strength.
Applicable units are those of quantitykind:Permittivity
Permittivity
"Permittivity Ratio" is the ratio of permittivity to the permittivity of a vacuum.
$\epsilon_r = \epsilon / \epsilon_0$, where $\epsilon$ is permittivity and $\epsilon_0$ is the electric constant.
Applicable units are those of quantitykind:PermittivityRatio
Permittivity Ratio
The phase coefficient is the amount of phase shift that occurs as the wave travels one meter. Increasing the loss of the material, via the manipulation of the material's conductivity, will decrease the wavelength (increase $\beta$) and increase the attenuation coefficient (increase $\alpha$).
If $F(x) = Ae^{-\alpha x} \cos{[\beta (x - x_0)]}$, then $\alpha$ is the attenuation coefficient and $\beta$ is the phase coefficient.
Applicable units are those of quantitykind:PhaseCoefficient
Phase coefficient
"Phase Difference" is the difference, expressed in electrical degrees or time, between two waves having the same frequency and referenced to the same point in time. Two oscillators that have the same frequency and different phases have a phase difference, and the oscillators are said to be out of phase with each other. The amount by which such oscillators are out of step with each other can be expressed in degrees from $0^\circ$ to $360^\circ$, or in radians from 0 to ${2\pi}$. If the phase difference is $180^\circ$ ($\pi$ radians), then the two oscillators are said to be in antiphase.
$\varphi = \varphi_u - \varphi_i$, where $\varphi_u$ is the initial phase of the voltage and $\varphi_i$ is the initial phase of the electric current.
Phasenverschiebungswinkel
diferencia de fase
diferença de fase
différence de phase
phase difference
przesunięcie fazowe
sfasamento angolare
اختلاف طور
位相差
desfasagem
déphasage
In a dispersive medium sound speed is a function of sound frequency, through the dispersion relation. The spatial and temporal distribution of a propagating disturbance will continually change. Each frequency component propagates at its own Phase Velocity of Sound.
$c = \frac{\omega}{k} = \lambda f$, where $\omega$ is the angular frequency, $k$ is angular wavenumber, $\lambda$ is the wavelength, and $f$ is the frequency.
Applicable units are those of quantitykind:PhaseSpeedOfSound
Phase speed of sound
"Phonon Mean Free Path" is the mean free path of phonons.
Phonon Mean Free Path
"Photo Threshold of Awareness Function" is the ability of the human eye to detect a light that results in a $1^o$ radial angle at the eye with a given duration (temporal summation).
Photo Threshold of Awareness Function
A measure of flux of photons per solid angle
Applicable units are those of quantitykind:PhotonIntensity
Photon Intensity
ratio between the photon flux at a point on a surface and in a given direction and the product of the solid angle and the orthogonal projection of this element on a plane perpendicular to the given direction
Quotient aus dem durch eine Fläche in einer Richtung durchgehenden Photonenstrom und dem Produkt aus dem durchstrahlten Raumwinkel und der Projektion dieser Fläche auf eine Ebene senkrecht zur betrachteten Fläche
photon luminance
A measure of flux of photons per surface area per solid angle
Applicable units are those of quantitykind:PhotonRadiance
Photon Radiance
Photosynthetic Photon Flux (PPF) is a measurement of the total number of photons emitted by a light source each second within the PAR wavelength range and is measured in μmol/s. Lighting manufacturers may specify their grow light products in terms of PPF. It can be considered as analogous to measuring the luminous flux (lumens) of visible light which would typically require the use of an integrating sphere or a goniometer system with spectroradiometer sensor.
Applicable units are those of quantitykind:PhotosyntheticPhotonFlux
Photosynthetic Photon Flux
Photosynthetically Active Radiation are the wavelengths of light within the visible range of 400 to 700 nanometers (nm) that are critical for photosynthesis. PPFD measures the amount of PAR light (photons) that arrive at the plant’s surface each second. The PPFD is measured at various distances with a Full-spectrum Quantum Sensor, also known as a PAR meter. Natural sunlight has a PAR value of 900-1500μMol/m2/s when the sun is directly overhead. For a grow light to be effective, it should have PAR values of 500-1500 μMol/m2/s.
Applicable units are those of quantitykind:PhotosyntheticPhotonFluxDensity
Photosynthetic Photon Flux Density
smallest element of a display space (cell size) of a digitized two-dimensional field representation of an image which has an address (x and y coordinates corresponding to its position in the field) and a specific brightness value
kleinstes Element einer Darstellungsfläche (Zellgröße) einer digitalisierten zweidimensionalen Felddarstellung eines Bildes, die eine Adresse (x- und y-Koordinaten entsprechend seiner Position im Feld) und einen spezifischen Helligkeitswert besitzt
picture element
Another name for Force Per Area, used by the Industry Foundation Classes (IFC) standard.
Flächenlast
Planar Force
The $\textit{Planck function}$ is used to compute the radiance emitted from objects that radiate like a perfect "Black Body". The inverse of the $\textit{Planck Function}$ is used to find the $\textit{Brightness Temperature}$ of an object. The precise formula for the Planck Function depends on whether the radiance is determined on a $\textit{per unit wavelength}$ or a $\textit{per unit frequency}$. In the ISO System of Quantities, $\textit{Planck Function}$ is defined by the formula: $Y = -G/T$, where $G$ is Gibbs Energy and $T$ is thermodynamic temperature.
The Planck function, $B_{\tilde{\nu}}(T)$, is given by: $B_{\nu}(T) = \frac{2h c^2\tilde{\nu}^3}{e^{hc / k \tilde{\nu} T}-1}$ where, $\tilde{\nu}$ is wavelength, $h$ is Planck's Constant, $k$ is Boltzman's Constant, $c$ is the speed of light in a vacuum, $T$ is thermodynamic temperature.
Planck Function
The inclination to each other of two intersecting lines, measured by the arc of a circle intercepted between the two lines forming the angle, the center of the circle being the point of intersection. An acute angle is less than $90^\circ$, a right angle $90^\circ$; an obtuse angle, more than $90^\circ$ but less than $180^\circ$; a straight angle, $180^\circ$; a reflex angle, more than $180^\circ$ but less than $360^\circ$; a perigon, $360^\circ$. Any angle not a multiple of $90^\circ$ is an oblique angle. If the sum of two angles is $90^\circ$, they are complementary angles; if $180^\circ$, supplementary angles; if $360^\circ$, explementary angles.
An angle formed by two straight lines (in the same plane) angle - the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
Rovinný úhel
Sudut satah
angle plan
angolo piano
angulus planus
düzlemsel açı
ebener Winkel
kąt płaski
medida angular
plane angle
ravninski kot
szög
unghi plan
ángulo plano
Επίπεδη γωνία
Плоский угол
Равнинен ъгъл
זווית
الزاوية النصف قطرية
زاویه مستوی
क्षेत्र
弧度
角度
Applicable units are those of quantitykind:PlasmaLevel
Plasma Level
The Poisson Ratio is the negative ratio of transverse to axial strain. In fact, when a sample object is stretched (or squeezed), to an extension (or contraction) in the direction of the applied load, it corresponds a contraction (or extension) in a direction perpendicular to the applied load. The ratio between these two quantities is the Poisson's ratio.
$\mu = \frac{\Delta \delta}{\Delta l}$, where $\Delta \delta$ is the lateral contraction and $\Delta l$ is the elongation.
Applicable units are those of quantitykind:PoissonRatio
Poisson Ratio
The polar moment of inertia is a quantity used to predict an object's ability to resist torsion, in objects (or segments of objects) with an invariant circular cross-section and no significant warping or out-of-plane deformation. It is used to calculate the angular displacement of an object subjected to a torque. It is analogous to the area moment of inertia, which characterizes an object's ability to resist bending.
Polar moment of inertia
"Polarizability" is the relative tendency of a charge distribution, like the electron cloud of an atom or molecule, to be distorted from its normal shape by an external electric field, which may be caused by the presence of a nearby ion or dipole. The electronic polarizability $\alpha$ is defined as the ratio of the induced dipole moment of an atom to the electric field that produces this dipole moment. Polarizability is often a scalar valued quantity, however in the general case it is tensor-valued.
measure of the deformability of the electron shell of molecules and atoms
Maß für die Deformierbarkeit der Elektronenhülle von Molekülen und Atomen
Applicable units are those of quantitykind:Polarizability
Polarizability
polarisability
The Polarization Field is the vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material. The polarization vector P is defined as the ratio of electric dipole moment per unit volume.
Polarization Field
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world, but can also represent the number of any kind of entity.
Applicable units are those of quantitykind:Population
Population
A "Position Vector", also known as location vector or radius vector, is a Euclidean vector which represents the position of a point P in space in relation to an arbitrary reference origin O.
$r = \overrightarrow{OP}$, where $O$ and $P$ are two points in space.
Position Vector
A "Positive Dimensionless Ratio" is a dimensionless ratio that is greater than zero
"PositiveLength" is a measure of length strictly greater than zero.
A "PositivePlaneAngle" is a plane angle strictly greater than zero.
Positive Plane Angle
Energy possessed by a body by virtue of its position in a gravity field in contrast with kinetic energy, that possessed by virtue of its motion.
$V = -\int F \cdot dr$, where $F$ is a conservative force and $R$ is a position vector.
Energia potencjalna
Energie potențială
Potansiyel enerji
Tenaga keupayaan
energia potencial
energia potenziale
energía potencial
potenciální energie
potential energy
potentielle Energie
énergie potentielle
потенциальная энергия
انرژی پتانسیل
طاقة وضع
स्थितिज ऊर्जा
位置エネルギー
势能
Power is the rate at which work is performed or energy is transmitted, or the amount of energy required or expended for a given unit of time. As a rate of change of work done or the energy of a subsystem, power is: $P = W/t$, where $P$ is power, $W$ is work and {t} is time.
$P = F \cdot v$, where $F$ is force and $v$ is velocity.
Kuasa
Leistung
Výkon
güç
moc
moč
potencia
potentia
potenza
potência
power
puissance
putere
teljesítmény , hőáramlás
Ισχύς
Мощност
Мощность
הספק
القدرة
توان، نرخ جریان گرما
शक्ति
功率、热流
電力・仕事率
flux energetic
strumień promieniowania
ısı akış oranı
विकिरणी बहाव
Applicable units are those of quantitykind:PowerArea
Power Area
Applicable units are those of quantitykind:PowerAreaPerSolidAngle
Power Area per Solid Angle
ratio indicating the relationship between continuous power and continuous current
Verhältnis, das den Zusammenhang zwischen der Dauerkraft zum Dauerstrom kennzeichnet
power constant
"Power Factor", under periodic conditions, is the ratio of the absolute value of the active power $P$ to the apparent power $S$.
$\lambda = \left | P \right | / \left | S \right |$, where $P$ is active power and $S$ is apparent power.
Applicable units are those of quantitykind:PowerFactor
Leistungsfaktor
Współczynnik mocy
facteur de puissance
factor de potencia
factor de putere
faktor kuasa
fator de potência
fattore di potenza
güç faktörü
power factor
Účiník
Коэффициент_мощности
ضریب توان
معامل القدرة
शक्ति गुणांक
力率
功率因数
Power Per Area
Power per Area Angle
Applicable units are those of quantitykind:PowerPerAreaQuarticTemperature
Power per area quartic temperature
"Power Per Electric Charge" is the amount of energy generated by a unit of electric charge.
Applicable units are those of quantitykind:PowerPerElectricCharge
Power Per Electric Charge
A $\textit{Poynting Vector}$ is the vector product of the electric field strength $\mathbf{E}$ and the magnetic field strength $\mathbf{H}$ of the electromagnetic field at a given point. The flux of the Poynting vector through a closed surface is equal to the electromagnetic power passing through this surface. For a periodic electromagnetic field, the time average of the Poynting vector is a vector of which, with certain reservations, the direction may be considered as being the direction of propagation of electromagnetic energy and the magnitude considered as being the average electromagnetic power flux density.
$\mathbf{S} = \mathbf{E} \times \mathbf{H} $, where $\mathbf{E}$ is electric field strength and \mathbf{H} is magnetic field strength.
"Poynting Vector" is the vector product of the electric field strength $\mathbf{E}$ and the magnetic field strength $\mathbf{H}" of the electromagnetic field at a given point. The flux of the Poynting vector through a closed surface is equal to the electromagnetic power passing through this surface. For a periodic electromagnetic field, the time average of the Poynting vector is a vector of which, with certain reservations, the direction may be considered as being the direction of propagation of electromagnetic energy and the magnitude considered as being the average electromagnetic power flux density.
Applicable units are those of quantitykind:PoyntingVector
Poynting vector
Poynting-Vektor
vecteur de Poynting
vector de Poynting
vettore di Poynting
wektor Poyntinga
вектор Пойнтинга
متجَه بوينتنج
ポインティングベクトル
Pressure is an effect which occurs when a force is applied on a surface. Pressure is the amount of force acting on a unit area. Pressure is distinct from stress, as the former is the ratio of the component of force normal to a surface to the surface area. Stress is a tensor that relates the vector force to the vector area.
$p = \frac{dF}{dA}$, where $dF$ is the force component perpendicular to the surface element of area $dA$.
Druck
Tekanan
Tlak
basınç
ciśnienie
nyomás
presiune
presión
pressio
pression
pressione
pressure
pressão
tlak
Πίεση - τάση
Давление
Налягане
לחץ
الضغط أو الإجهاد
فشار، تنش
दबाव
压强、压力
圧力
naprężenie
pritisk
tegasan
tensione meccanica
tensiune mecanică
tensão
механично напрежение
दाब
ratio between the amount-of-substance of a dissolved material and the mass of its solvent divided by the related pressure
Quotient Molarität (Quotient aus der Stoffmenge eines gelösten Stoffes und dem Volumen der Lösung) dividiert durch den zugehörigen Druck
pressure-based amount-of-substance concentration
ratio of density divided by the related pressure
Quotient aus Dichte dividiert durch den zugehörigen Druck
pressure-based density
ratio of dynamic viscosity divided by the related pressure
Quotient aus der dynamischen Viskosität dividiert durch den zugehörigen Druck
pressure-based dynamic viscosity
ratio of electric current divided by the related pressure
Quotient elektrische Stromstärke dividiert durch den zugehörigen Druck
pressure-based electric current
ratio of electric voltage divided by the related pressure
Quotient elektrischer Spannung dividiert durch den zugehörigen Druck
pressure-based electric voltage
ratio of dynamic viscosity and density of the material divided by the related pressure
Quotient aus der dynamischen Viskosität und der Dichte eines Stoffes dividiert durch den zugehörigen Druck
pressure-based kinematic viscosity
ratio of length divided by the related pressure
Quotient Länge dividiert durch den zugehörigen Druck
pressure-based length
ratio of mass divided by the related pressure
Quotient Masse dividiert durch den zugehörigen Druck
pressure-based mass
ratio of mass flow divided by the related pressure
Quotient Massenstrom dividiert durch den zugehörigen Druck
pressure-based mass flow
ratio of molality divided by the related pressure
Quotient Molalität dividiert durch den zugehörigen Druck
pressure-based molality
pressure-based quantity
ratio of temperature divided by the related pressure
Quotient Temperatur dividiert durch den zugehörigen Druck
pressure-based temperature
ratio of velocity divided by the related pressure
Quotient Geschwindigkeit dividiert durch den zugehörigen Druck
pressure-based velocity
ratio of volume divided by the related pressure
Quotient Volumen dividiert durch den zugehörigen Druck
pressure-based volume
ratio of volume flow divided by the related pressure
Quotient Volumenstrom dividiert durch den zugehörigen Druck
pressure-based volume flow
Pressure Burning Rate Constant
Pressure Burning Rate Index
$\beta = \left (\frac{\partial p}{\partial T} \right )_V$, where $p$ is $pressure$, $T$ is thermodynamic temperature and $V$ is volume.
Applicable units are those of quantitykind:PressureCoefficient
Pressure Coefficient
differential pressure divided by the associated length
Differenzdruck dividiert durch die zugehörige Länge
Applicable units are those of quantitykind:PressureGradient
pressure gradient
ratio between pressure and the volume flow at a given cross-sectional area, passing through this cross-sectional area
an einer festgelegten Querschnittsfläche der Quotient Druck durch den Volumenstrom, der durch diese Querschnittsfläche hindurchgeht
pressure in relation to volume flow
Applicable units are those of quantitykind:PressureInRelationToVolumeFlowRate
pressure in relation to volume flow rate
"Pressure Loss per Length" refers to the power lost in overcoming the friction between two moving surfaces. Also referred to as "Friction Loss".
Applicable units are those of quantitykind:PressureLossPerLength
Pressure Loss per Length
Applicable units are those of quantitykind:PressureRatio
Pressure Ratio
In epidemiology, prevalence is the proportion of a particular population found to be affected by a medical condition (typically a disease or a risk factor such as smoking or seatbelt use) at a specific time. (Wikipedia)
Applicable units are those of quantitykind:Prevalence
Prevalence
Applicable units are those of quantitykind:PrincipalQuantumNumber
Principal Quantum Number
The propagation constant, symbol $\gamma$, for a given system is defined by the ratio of the amplitude at the source of the wave to the amplitude at some distance x.
$\gamma = \alpha + j\beta$, where $\alpha$ is the attenuation coefficient and $\beta$ is the phase coefficient.
Applicable units are those of quantitykind:PropagationCoefficient
Propagation coefficient
Applicable units are those of quantitykind:PropellantBurnRate
Propellant Burn Rate
Propellant Mass
Propellant Mean Bulk Temperature
Propellant Temperature
"Quality Factor", of a resonant circuit, is a measure of the "goodness" or quality of a resonant circuit. A higher value for this figure of merit correspondes to a more narrow bandwith, which is desirable in many applications. More formally, $Q$ is the ratio of power stored to power dissipated in the circuit reactance and resistance, respectively
If $\underline{Z} = R + jX$, then $Q = \left | X \right |/R$, where $\underline{Z}$ is impedance, $R$ is resistance, and $X$ is reactance.
Applicable units are those of quantitykind:QualityFactor
Quality Factor
Resolve Quality Facor - electronics and also doses
work of a light source provided in the form of light as the product of the luminous flux Φ produced by the light source and the time t for which this is radiated
in Form von Licht aufgebrachte Arbeit einer Lichtquelle als Produkt aus dem von der Lichtquelle ausgehenden Lichtstrom Φ und der Zeit t, während dieser ausgestrahlt wird
quantity of light
The "Quantum Number" describes values of conserved quantities in the dynamics of the quantum system. Perhaps the most peculiar aspect of quantum mechanics is the quantization of observable quantities, since quantum numbers are discrete sets of integers or half-integers.
Applicable units are those of quantitykind:QuantumNumber
Quantum Number
Applicable units are those of quantitykind:QuarticElectricDipoleMomentPerCubicEnergy
A quantity of mass held by Program/project management to mitigate the risk of over-predicted performance estimates, under predicted mass estimates, and future operational and mission specific requirements (program mass reserve, manager's mass reserve, launch window reserve, performance reserve, etc.).
Reserve Mass
Radio-Frequency Power. Power level of electromagnetic waves alternating at the frequency of radio waves (up to 10^10 Hz).
RF-Power Level
In classical geometry, the "Radial Distance" is a coordinate in polar coordinate systems (r, $\theta$). Basically the radial distance is the scalar Euclidean distance between a point and the origin of the system of coordinates.
$d = \sqrt{r_1^2 + r_2^2 -2r_1r_2\cos{(\theta_1 - \theta_2)}}$, where $P_1$ and $P_2$ are two points with polar coordinates $(r_1, \theta_1)$ and $(r_2, \theta_2)$, respectively, and $d$ is the distance.
Radial Distance
"Radiance" is a radiometric measure that describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction.
$L = \frac{dI}{dA}\frac{1}{cos\alpha}$, where $dI$ is the radiant intensity emitted from an element of the surface area $dA$, and angle $\alpha$ is the angle between the normal to the surface and the given direction.
Applicable units are those of quantitykind:Radiance
Radiance
Radiance Factor is the ratio of the radiance of the surface element in the given direction to that of a perfect reflecting or transmitting diffuser identically irradiated unit.
$\beta = \frac{L_n}{L_d}$, where $L_n$ is the radiance of a surface element in a given direction and $L_d$ is the radiance of the perfect reflecting or transmitting diffuser identically irradiated and viewed. Reflectance factor is equivalent to radiance factor or luminance factor (when the cone angle is infinitely small, and is equivalent to reflectance when the cone angle is $2π sr$.
Applicable units are those of quantitykind:RadianceFactor
Radiance Factor
$M = \frac{d\Phi}{dA}$, where $d\Phi$ is the radiant flux leaving the element of the surface area $dA$.
Radiant Emmitance
In radiometry, $\textit{Radiant Energy}$ is the energy of electromagnetic waves. The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time. In nuclear physics, $\textit{Radiant Energy}$ is energy, excluding rest energy, of the particles that are emitted, transferred, or received.
In radiometry,"Radiant Energy} is the energy of electromagnetic waves. The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time. In nuclear physics, $\textit{Radiant Energy" is energy, excluding rest energy, of the particles that are emitted, transferred, or received.
Işınım erkesi
Strahlungsenergie
Tenaga sinaran
energia promienista
energia radiante
energie záření
energía radiante
radiant energy
énergie rayonnante
энергия излучения
انرژی تابشی
طاقة إشعاعية
विकिरण ऊर्जा
放射エネルギー
辐射能
"Radiant Energy Density", or radiant power, is the radiant energy per unit volume.
$w$, $\rho = \frac{dQ}{dV}$, where $dQ$ is the radiant energy in an elementary three-dimensional domain, and $dV$ is the volume.
Applicable units are those of quantitykind:RadiantEnergyDensity
Radiant Energy Density
Radiant exposure is a measure of the total radiant energy incident on a surface per unit area; equal to the integral over time of the radiant flux density. Also known as exposure.
$H = \int_{0}^{\Delta t}{E}{dt}$, where $E$ is the irradiance acting during the time interval with duration $\Delta t$.
Radiant Exposure
Radiant fluence rate, or spherical irradiance, is equal to the total radiant flux incident on a small sphere divided by the area of the diametrical cross-section of the sphere.
$H_0 = \int_{0}^{\Delta t}{E_0}{dt}$, where $E_0$ is the spherical radiance acting during time interval with duration $\Delta t$.
Applicable units are those of quantitykind:RadiantFluence
Radiant Fluence
$E_0 = \int{L}{d\Omega}$, where $d\Omega$ is the solid angle of each elementary beam passing through the given point and $L$ its radiance at that point in the direction of the beam.
Radiant Fluence Rate
Radiant Flux, or radiant power, is the measure of the total power of electromagnetic radiation (including infrared, ultraviolet, and visible light). The power may be the total emitted from a source, or the total landing on a particular surface.
$\Phi = \frac{dQ}{dt}$, where $dQ$ is the radiant energy emitted, transferred, or received during a time interval of the duration $dt$.
Strahlungsfluss
flusso radiante
flux énergétique
moc promieniowania
potencia radiante
potência radiante
radiant flux
قدرة إشعاعية
放射パワー
Strahlungsleistung
flujo radiante
fluxo energético
moc promienista
potenza radiante
puissance rayonnante
radiant power
Radiant Intensity is a measure of the intensity of electromagnetic radiation. It is defined as power per unit solid angle.
$I = \frac{d\Phi}{d\Omega}$, where $d\Phi$ is the radiant flux leaving the source in an elementary cone containing the given direction with the solid angle $d\Omega$.
Applicable units are those of quantitykind:RadiantIntensity
Radiant Intensity
"Radiative Heat Transfer" is proportional to $(T_1^4 - T_2^4)$ and area of the surface, where $T_1$ and $T_2$ are thermodynamic temperatures of two black surfaces, for non totally black surfaces an additional factor less than 1 is needed.
Radiative Heat Transfer
number of spontaneous nuclear transformations in a defined amount of substance during a sufficiently small period of time divided by this period, expressed as a ratio ∂N/∂t, where ∂N is the expected value for the number of spontaneous transformations from this state within the time period ∂t
Anzahl der spontanen Kernumwandlungen in einer gegebenen Menge eines Stoffes während eines hinreichend kleinen Zeitintervalls, dividiert durch dieses Zeitintervall, ausgedrückt als Quotient ∂N/∂t, wobei ∂N der Erwartungswert für die Anzahl der spontanen Übergänge aus diesem Zustand im Zeitintervall ∂t ist
radioactivity
Radiosity is the total emitted and reflected radiation leaving a surface.
Applicable units are those of quantitykind:Radiosity
Radiosity
In classical geometry, the "Radius" of a circle or sphere is any line segment from its center to its perimeter the radius of a circle or sphere is the length of any such segment.
$r = \frac{d}{2}$, where $d$ is the circle diameter.
Radius
In geometry, the "Radius of Curvature", R, of a curve at a point is a measure of the radius of the circular arc which best approximates the curve at that point.
Radius of Curvature
quantity which uses a temperature scale with a zero value at the absolute temperature zero (0 K) like the Kelvin scale, but, in contrast with it, uses the scale intervals of the Fahrenheit scale
Größe, die eine Temperaturskala benutzt, die wie die Kelvin-Skala beim absoluten Temperatur-Nullpunkt (0 K) ihren Nullwert hat, jedoch im Gegensatz zu dieser den Skalenabstand der Fahrenheit-Skala verwendet
Rankine temperature
Applicable units are those of quantitykind:Ratio
The specific heat ratio of a gas is the ratio of the specific heat at constant pressure, $c_p$, to the specific heat at constant volume, $c_V$. It is sometimes referred to as the $\textit{adiabatic index}$, or the $\textit{heat capacity ratio}$, or the $\textit{isentropic expansion factor}$, or the $\textit{adiabatic exponent}$, or the $\textit{isentropic exponent}$.
$\gamma = c_p / c_V$, where $c$ is the specific heat of a gas, $c_p$ is specific heat capacity at constant pressure, $c_V$ is specific heat capacity at constant volume.
Applicable units are those of quantitykind:RatioOfSpecificHeatCapacities
Ratio of Specific Heat Capacities
$\textit{Reactance}$ is the opposition of a circuit element to a change of electric current or voltage, due to that element's inductance or capacitance. A built-up electric field resists the change of voltage on the element, while a magnetic field resists the change of current. The notion of reactance is similar to electrical resistance, but they differ in several respects. Capacitance and inductance are inherent properties of an element, just like resistance.
$X = im \underline{Z}$, where $\underline{Z}$ is impedance and $im$ denotes the imaginary part.
"Reactance" is the opposition of a circuit element to a change of electric current or voltage, due to that element's inductance or capacitance. A built-up electric field resists the change of voltage on the element, while a magnetic field resists the change of current. The notion of reactance is similar to electrical resistance, but they differ in several respects. Capacitance and inductance are inherent properties of an element, just like resistance.
Applicable units are those of quantitykind:Reactance
Reactance
"Reaction Energy" in a nuclear reaction, is the sum of the kinetic energies and photon energies of the reaction products minus the sum of the kinetic and photon energies of the reactants.
Reaction Energy
"Reactive Power", for a linear two-terminal element or two-terminal circuit, under sinusoidal conditions, is the quantity equal to the product of the apparent power $S$ and the sine of the displacement angle $\psi$. The absolute value of the reactive power is equal to the non-active power. The ISO (and SI) unit for reactive power is the voltampere. The special name $\textit{var}$ and symbol $\textit{var}$ are given in IEC 60027 1.
$Q = lm \underline{S}$, where $\underline{S}$ is complex power. Alternatively expressed as: $Q = S \cdot \sin \psi$, where $\psi$ is the displacement angle.
Applicable units are those of quantitykind:ReactivePower
Blindleistung
Jalový výkon
Kuasa reaktif
moc bierna
potencia reactiva
potenza reattiva
potência reativa
puissance réactive
reactive power
reaktif güç
القدرة الكهربائية الردفعلية;الردية
توان راکتیو
无功功率
無効電力
"Reactivity" characterizes the deflection of reactor from the critical state.
$\rho = \frac{k_{eff} - 1}{k_{eff}}$, where $k_{eff}$ is the effective multiplication factor.
Applicable units are those of quantitykind:Reactivity
Reactivity
The "Reactor Time Constant", also called the reactor period, is the time during which the neutron flux density in a reactor changes by the factor e = 2.718 (e: basis of natural logarithms), when the neutron flux density increases or decreases exponentially.
Reactor Time Constant
quantity whose value is inversely proportional to the resistance value
Größe, deren Wert sich umgekehrt proportional zum Widerstandswert verhält
reciprocal electric resistance
multiplicative inverse of energy
Kehrwert der Energie
reciprocal energy
quantity whose value is inversely proportional to the angle value
Größe, deren Wert sich umgekehrt proportional zum Winkelwert verhält
reciprocal plane angle
quantity whose value is inversely proportional to the voltage value
Größe, deren Wert sich umgekehrt proportional zum Spannungswert verhält
Applicable units are those of quantitykind:ReciprocalVoltage
reciprocal voltage
The "Recombination Coefficient" is the rate of recombination of positive ions with electrons or negative ions in a gas, per unit volume, divided by the product of the number of positive ions per unit volume and the number of electrons or negative ions per unit volume.
$-\frac{dn^+}{dt} = -\frac{dn^-}{dt} = an^+n^-$, where $n^+$ and $n^-$ are the ion number densities of positive and negative ions, respectively, recombined during an infinitesimal time interval with duration $dt$.
Applicable units are those of quantitykind:RecombinationCoefficient
Recombination Coefficient
Reflectance generally refers to the fraction of incident power that is reflected at an interface, while the term "reflection coefficient" is used for the fraction of electric field reflected. Reflectance is always a real number between zero and 1.0.
$\rho = \frac{\Phi_t}{\Phi_m}$, where $\Phi_t$ is the reflected radiant flux, the reflected luminous flux, or the reflected sound power and $\Phi_m$ is the incident radiant flux, incident luminous flux, or incident sound power, respectively.
Applicable units are those of quantitykind:Reflectance
Reflectance
Reflectance Factor is the measure of the ability of a surface to reflect light or other electromagnetic radiation, equal to the ratio of the reflected flux to the incident flux.
$R = \frac{\Phi_n}{\Phi_d}$, where $\Phi_n$ is the radiant flux or luminous flux reflected in the directions delimited by a given cone and $\Phi_d$ is the flux reflected in the same directions by an identically radiated diffuser of reflectance equal to 1.
Applicable units are those of quantitykind:ReflectanceFactor
Reflectance Factor
For homogeneous and semi-infinite materials, reflectivity is the same as reflectance. Reflectivity is the square of the magnitude of the Fresnel reflection coefficient, which is the ratio of the reflected to incident electric field; as such the reflection coefficient can be expressed as a complex number as determined by the Fresnel equations for a single layer, whereas the reflectance is always a positive real number. For layered and finite media, according to the CIE, reflectivity is distinguished from reflectance by the fact that reflectivity is a value that applies to thick reflecting objects. When reflection occurs from thin layers of material, internal reflection effects can cause the reflectance to vary with surface thickness. Reflectivity is the limit value of reflectance as the sample becomes thick; it is the intrinsic reflectance of the surface, hence irrespective of other parameters such as the reflectance of the rear surface. Another way to interpret this is that the reflectance is the fraction of electromagnetic power reflected from a specific sample, while reflectivity is a property of the material itself, which would be measured on a perfect machine if the material filled half of all space.
Reflectivity
"refractive index" or index of refraction n of a substance (optical medium) is a dimensionless number that describes how light, or any other radiation, propagates through that medium.
$n = \frac{c_0}{c}$, where $c_0$ is the speed of light in vacuum, and $c$ is the speed of light in the medium.
Applicable units are those of quantitykind:RefractiveIndex
Brechzahl
Indeks biasan
Index lomu
Indice de refracție
Współczynnik załamania
indice de réfraction
indice di rifrazione
kırılma indeksi
refractive index
índice de refracción
índice refrativo
Показатель преломления
ضریب شکست
معامل الانكسار
अपवर्तनांक
屈折率
折射率
Brechungsindex
"Relative Atomic Mass " is a dimensionless physical quantity, the ratio of the average mass of atoms of an element (from a given source) to 1/12 of the mass of an atom of carbon-12 (known as the unified atomic mass unit)
Relative Atomic Mass
$\textit{Relative Humidity}$ is the ratio of the partial pressure of water vapor in an air-water mixture to the saturated vapor pressure of water at a prescribed temperature. The relative humidity of air depends not only on temperature but also on the pressure of the system of interest. $$$$ $\textit{Relative Humidity}$ is also referred to as $\textit{Relative Partial Pressure}$. $$$$ Relative partial pressure is often referred to as $RH$ and expressed in percent.
$\varphi = p / p_{sat}$, where $p$ is partial pressure of vapour, $p_{sat}$ is thermodynamic temperature and $V$ is its partial pressure at saturation (at the same temperature). Relative partial pressure is often referred to as $RH$ and expressed in percent. $\textit{Relative Humidity}$ is also referred to as $\textit{Relative Partial Pressure}$.
Applicable units are those of quantitykind:RelativeHumidity
Relative Humidity
"Relative Mass Concentration of Vapour" is one of a number of "Relative Concentration" quantities defined by ISO 80000.
$\varphi = v / v_{sat}$, where $v$ is mass concentration of water vapour, $v_{sat}$ is its mass concentration of water vapour at saturation (at the same temperature). For normal cases, the relative partial pressure may be assumed to be equal to relative mass concentration of vapour.
Relative Mass Concentration of Vapour is one of a number of Relative Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:RelativeMassConcentrationOfVapour
Relative Mass Concentration of Vapour
The "Relative Mass Defect" is the mass defect between the monoisotopic mass of an element and the mass of its A + 1 or its A + 2 isotopic cluster.
$B_r = \frac{B}{m_u}$, where $B$ is the mass defect and $m_u$ is the unified atomic mass constant.
Relative Mass Defect
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material.
$d = \frac{\rho}{\rho_0}$, where $\rho$ is mass density of a substance and $\rho_0$ is the mass density of a reference substance under conditions that should be specified for both substances.
Applicable units are those of quantitykind:RelativeMassDensity
Relative Mass Density
The "Relative Mass Excess" is the mass excess between the monoisotopic mass of an element and the mass of its A + 1 or its A + 2 isotopic cluster (extrapolated from relative mass defect).
$\Delta_r = \frac{\Delta}{m_u}$, where $\Delta$ is the mass excess and $m_u$ is the unified atomic mass constant.
Applicable units are those of quantitykind:RelativeMassExcess
Relative Mass Excess
"Relative Mass Ratio of Vapour" is one of a number of "Relative Concentration" quantities defined by ISO 80000.
$\psi = x / x_{sat}$, where $x$ is mass ratio of water vapour to dry gas, $x_{sat}$ is its mass raio of water vapour to dry gas at saturation (at the same temperature).
Relative Mass Ratio of Vapour is one of a number of Relative Concentration quantities defined by ISO 80000.
Applicable units are those of quantitykind:RelativeMassRatioOfVapour
Relative Mass Ratio of Vapour
"Relative Molecular Mass " is equivalent to the numerical value of the molecular mass expressed in unified atomic mass units. The molecular mass (m) is the mass of a molecule.
Relative Molecular Mass
$\varphi = p / p_{sat}$, where $p$ is partial pressure of vapour, $p_{sat}$ is thermodynamic temperature and $V$ is its partial pressure at saturation (at the same temperature). Relative partial pressure is often referred to as $RH$ and expressed in percent. $\textit{Relative Partial Pressure}$ is also referred to as $\textit{Relative Humidity}$.
Applicable units are those of quantitykind:RelativePartialPressure
Relative Partial Pressure
$\alpha_p = \frac{1}{p}\left (\frac{\partial p}{\partial T} \right )_V$, where $p$ is $pressure$, $T$ is thermodynamic temperature and $V$ is volume.
Applicable units are those of quantitykind:RelativePressureCoefficient
Relative Pressure Coefficient
"Relaxation TIme" is a time constant for exponential decay towards equilibrium.
Relaxation TIme
"Reluctance" or magnetic resistance, is a concept used in the analysis of magnetic circuits. It is analogous to resistance in an electrical circuit, but rather than dissipating electric energy it stores magnetic energy. In likeness to the way an electric field causes an electric current to follow the path of least resistance, a magnetic field causes magnetic flux to follow the path of least magnetic reluctance. It is a scalar, extensive quantity, akin to electrical resistance.
$R_m = \frac{U_m}{\Phi}$, where $U_m$ is magnetic tension, and $\Phi$ is magnetic flux.
Applicable units are those of quantitykind:Reluctance
Reluctance
quantity whose value is inversely proportional to the length value
Größe, deren Wert sich umgekehrt proportional zum Längenwert verhält
Applicable units are those of quantitykind:Repetency
repetency
"Residual Resistivity" for metals, is the resistivity extrapolated to zero thermodynamic temperature.
Applicable units are those of quantitykind:ResidualResistivity
Residual Resistivity
The electrical resistance of an object is a measure of its opposition to the passage of a steady electric current.
$R = \frac{u}{i}$, where $u$ is instantaneous voltage and $i$ is instantaneous electric current.
Applicable units are those of quantitykind:Resistance
Resistance
magnetic flux through the loop, caused by an electric current in the loop, divided by the product of this current and the resistance which prevents the flow of current
Magnetfluss durch die Schleife, verursacht durch einen elektrischen Strom in der Schleife, dividiert durch das Produkt aus diesen Strom und dem Widerstand, der diesen Stromfluss behindert
resistance-based inductance
Applicable units are those of quantitykind:ResistanceRatio
Resistance Ratio
"Resistivity" is the inverse of the conductivity when this inverse exists.
$\rho = \frac{1}{\sigma}$, if it exists, where $\sigma$ is conductivity.
Applicable units are those of quantitykind:Resistivity
Resistivity
"Resonance Energy" in a nuclear reaction, is the kinetic energy of an incident particle, in the reference frame of the target, corresponding to a resonance in a nuclear reaction.
Resonance Energy
The "Resonance Escape Probability" is the fraction of fission neutrons that manage to slow down from fission to thermal energies without being absorbed. In an infinite medium, the probability that a neutron slowing down will traverse all or some specified portion of the range of resonance energies without being absorbed.
Applicable units are those of quantitykind:ResonanceEscapeProbability
Resonance Escape Probability
Fraction of fission neutrons that manage to slow down from fission to thermal energies without being absorbed.
Resonance Escape Probability For Fission
Respiratory rate (Vf, Rf or RR) is also known by respiration rate, pulmonary ventilation rate, ventilation rate, or breathing frequency is the number of breaths taken within a set amount of time, typically 60 seconds. A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower than normal respiratory rate is termed bradypnea.
Applicable units are those of quantitykind:RespiratoryRate
Respiratory Rate
"Rest Energy" is the energy equivalent of the rest mass of a body, equal to the rest mass multiplied by the speed of light squared.
For a particle, $E_0 = m_0 c_0^2$, where $m_0$ is the rest mass of that particle, and $c_0$ is the speed of light in vacuum.
Rest Energy
The $\textit{Rest Mass}$, the invariant mass, intrinsic mass, proper mass, or (in the case of bound systems or objects observed in their center of momentum frame) simply mass, is a characteristic of the total energy and momentum of an object or a system of objects that is the same in all frames of reference related by Lorentz transformations. The mass of a particle type X (electron, proton or neutron) when that particle is at rest. For an electron: $m_e = 9,109 382 15(45) 10^{-31} kg$, for a proton: $m_p = 1,672 621 637(83) 10^{-27} kg$, for a neutron: $m_n = 1,674 927 211(84) 10^{-27} kg$. Rest mass is often denoted $m_0$.
Jisim rehat
Klidová hmotnost
Mirovna masa
Ruhemasse
dinlenme kütlesi
masa invariante
masa invariantă
masa spoczynkowa
massa a riposo
massa de repouso
masse au repos
rest mass
инвариантная масса
جرم سکون
كتلة ساكنة
निश्चर द्रव्यमान
不変質量
静止质量
invariantna masa
lastna masa
masa niezmiennicza
masse invariante
masse propre
träge Masse
масса покоя
Reverberation Time is the time required for reflections of a direct sound to decay by 60 dB below the level of the direct sound.
Reverberation Time
The "Reynolds Number" (Re) is a dimensionless number that gives a measure of the ratio of inertial forces to viscous forces and consequently quantifies the relative importance of these two types of forces for given flow conditions.
$Re = \frac{\rho uL}{\mu} = \frac{uL}{\nu}$, where $\rho$ is mass density, $u$ is speed, $L$ is length, $\mu$ is dynamic viscosity, and $\nu$ is kinematic viscosity.
Applicable units are those of quantitykind:ReynoldsNumber
Reynolds Number
"Richardson Constant" is a constant used in developing thermionic emission current density for a metal.
The thermionic emission current, $J$, for a metal is $J = AT^2\exp{(-\frac{\Phi}{kT})}$, where $T$ is thermodynamic temperature, $k$ is the Boltzmann constant, and $\Phi$ is a work function.
Applicable units are those of quantitykind:RichardsonConstant
Richardson Constant
du/dt as time dependent change in voltage
du/dt als zeitabhängige änderung der Spannung
rise of off-state voltage
Transverse force on rocket due to an atmosphere
Rocket Atmospheric Transverse Force
Applicable units are those of quantitykind:Rotary-TranslatoryMotionConversion
product of the moment of force M in a time interval multiplied by the duration of this interval
Produkt Drehmoment M in einem Zeitintervall mal Dauer dt dieses Zeitintervalls
rotary shock
A measure of the number of cycles that an item revolves per time period.
IfcRotationalFrequencyMeasure is a measure of the number of cycles that an item revolves in unit time. Usually measured in cycles/s.
Applicable units are those of quantitykind:RotationalFrequency
RotationalFrequency
"Rotational Mass" denotes the inertia of a body with respect to angular acceleration. It is usually measured in kg*m^2.
Applicable units are those of quantitykind:RotationalMass
Rotational Mass
Rotational Stiffness is the extent to which an object resists deformation in response to an applied torque.
Applicable units are those of quantitykind:TorquePerAngle
Rotational Stiffness
Applicable units are those of quantitykind:RotationalVelocity
"Scalar Magnetic Potential" is the scalar potential of an irrotational magnetic field strength. The negative of the gradient of the scalar magnetic potential is the irrotational magnetic field strength. The magnetic scalar potential is not unique since any constant scalar field can be added to it without changing its gradient.
$\mathbf{H} = -grad V_m$, where $\mathbf{H}$ is magnetic field strength.
Applicable units are those of quantitykind:ScalarMagneticPotential
Scalar Magnetic Potential
The moment of inertia, also called mass moment of inertia, rotational inertia, polar moment of inertia of mass, or the angular mass is a property of a distribution of mass in space that measures its resistance to rotational acceleration about an axis.
$I_a = \int r^2_Q dA$, where $r_Q$ is the radial distance from a $Q-axis$ and $A$ is area.
Applicable units are those of quantitykind:SecondAxialMomentOfArea
Second Axial Moment of Area
The second moment of area is a property of a physical object that can be used to predict its resistance to bending and deflection. The deflection of an object under load depends not only on the load, but also on the geometry of the object's cross-section.
Applicable units are those of quantitykind:SecondMomentOfArea
Flächenträgheitsmoment
Geometryczny moment bezwładności
Segundo momento de área
moment quadratique
second moment of area
secondo momento di area
segundo momento de érea
گشتاور دوم سطح
क्षेत्रफल का द्वितीय आघूर्ण
截面二次轴矩
断面二次モーメント
momento de inércia de área
A quantity kind that is a proportionality constant that quantifies the relationship between the molar concentrations of the reactants and the rate of a second order chemical reaction.
Applicable units are those of quantitykind:SecondOrderReactionRateConstant
Reaction Rate Constant
$I_p = \int r^2_Q dA$, where $r_Q$ is the radial distance from a $Q-axis$ and $A$ is area.
Applicable units are those of quantitykind:SecondPolarMomentOfArea
Second Polar Moment of Area
constant in Planck's radiation law on the dependence of the spectral density of various radiation variables on the wavelength of the electromagnetic radiation and the absolute temperature of the black radiator, derived from the product of Planck's quantum of action times the velocity of light in relation to Boltzmann's constant
Konstante im Planckschen Strahlungsgesetz über die Abhängigkeit der spektralen Dichte verschiedener Strahlungsgrößen von der Wellenlänge der elektromagnetischen Strahlung und der absoluten Temperatur beim schwarzen Strahler, welche sich zusammensetzt aus dem Produkt Plancksches Wirkungsquantum mal Lichtgeschwindigkeit bezogen auf die Boltzmann-Konstante
Mass ratio for the second stage of a multistage launcher.
Second Stage Mass Ratio
The sectional area integral measure is typically used in torsional analysis. It is usually measured in M⁵.
Applicable units are those of quantitykind:SectionAreaIntegral
Section Area Integral
The Section Modulus is a geometric property for a given cross-section used in the design of beams or flexural members.
$Z = \frac{I_a}{(r_Q)_{max}}$, where $I_a$ is the second axial moment of area and $(r_Q)_{max}$ is the maximum radial distance of any point in the surface considered from the $Q-axis$ with respect to which $I_a$ is defined.
Applicable units are those of quantitykind:SectionModulus
Section Modulus
"Seebeck Coefficient", or thermopower, or thermoelectric power of a material is a measure of the magnitude of an induced thermoelectric voltage in response to a temperature difference across that material.
$S_{ab} = \frac{dE_{ab}}{dT}$, where $E_{ab}$ is the thermosource voltage between substances a and b, $T$ is the thermodynamic temperature of the hot junction.
Applicable units are those of quantitykind:SeebeckCoefficient
Seebeck Coefficient
Applicable units are those of quantitykind:SerumLevel
Serum Level
Serum or Plasma Level
The value indicates the multiplier of the rated power that equipment can handle for some period of time when operating according to a manufacturer's specified conditions; typically applicable to motors.
Applicable units are those of quantitykind:ServiceFactor
Service Factor
Information entropy applied to a collection of indiviual organisms [of selected species] in a sample area. A measure of biodiversity.
Shannon Diversity Index
The Shear Modulus or modulus of rigidity, denoted by $G$, or sometimes $S$ or $\mu$, is defined as the ratio of shear stress to the shear strain.
$G = \frac{\tau}{\gamma}$, where $\tau$ is the shear stress and $\gamma$ is the shear strain.
Applicable units are those of quantitykind:ShearModulus
Shear Modulus
Shear Strain is the amount of deformation perpendicular to a given line rather than parallel to it.
$\gamma = \frac{\Delta x}{d}$, where $\Delta x$ is the parallel displacement between two surfaces of a layer of thickness $d$.
Shear Strain
Shear stress occurs when the force occurs in shear, or perpendicular to the normal.
$\tau = \frac{dF_t}{dA}$, where $dF_t$ is the tangential component of force and $dA$ is the area of the surface element.
Shear Stress
"Short-Range Order Parameter" is the fraction of the nearest-neighbor atom pairs in an Ising ferromagnet having magnetic moments in one direction, minus the fraction having magnetic moments in the opposite direction.
Applicable units are those of quantitykind:Short-RangeOrderParameter
Short-Range Order Parameter
Applicable units are those of quantitykind:SignalDetectionThreshold
Signal Detection Threshold
In telecommunications, particularly in radio, signal strength refers to the magnitude of the electric field at a reference point that is a significant distance from the transmitting antenna. It may also be referred to as received signal level or field strength. Typically, it is expressed in voltage per length or signal power received by a reference antenna. High-powered transmissions, such as those used in broadcasting, are expressed in dB-millivolts per metre (dBmV/m).
Signal Strength
Single Stage Launcher Mass Ratio
"Slowing-Down Area" in an infinite homogenous medium, is one-sixth of the mean square distance between the neutron source and the point where a neutron reaches a given energy.
Slowing-Down Area
"Slowing-Down Density" is a measure of the rate at which neutrons lose energy in a nuclear reactor through collisions; equal to the number of neutrons that fall below a given energy per unit volume per unit time.
$q = -\frac{dn}{dt}$, where $n$ is the number density and $dt$ is the duration.
Applicable units are those of quantitykind:Slowing-DownDensity
Slowing-Down Density
"Slowing-Down Length" is the average straight-line distance that a fast neutron will travel between its introduction into the slowing-downmedium (moderator) and thermalization.
Slowing-Down Length
A specific volume that is the ratio of the amount of substance adsorbed per unit weight of organic carbon in the soil or sediment to the concentration of the chemical in aqueous solution at equilibrium.
Applicable units are those of quantitykind:SoilAdsorptionCoefficient
Soil Adsorption Coefficient
Applicable units are those of quantitykind:SolidAngle
Prostorový úhel
Raumwinkel
Sudut padu
angle solide
angolo solido
angulus solidus
katı cisimdeki açı
kąt bryłowy
prostorski kot
solid angle
térszög
unghi solid
ángulo sólido
ângulo sólido
Στερεά γωνία
Пространствен ъгъл
Телесный угол
זווית מרחבית
الزاوية الصلبة
زاویه فضایی
立体角
立体角度
"Solid State Diffusion Length" is the average distance traveled by a particle, such as a minority carrier in a semiconductor
$L = \sqrt{D\tau}$, where $D$ is the diffusion coefficient and $\tau$ is lifetime.
Diffusion Length (Solid State Physics)
An amount of substance per unit volume that is the concentration of a saturated solution expressed as the ratio of the solute concentration over the volume of water. A substance's solubility fundamentally depends on several physical and chemical properties of the solution as well as the environment it is in.
Water Solubility
Sound energy density is the time-averaged sound energy in a given volume divided by that volume. The sound energy density or sound density (symbol $E$ or $w$) is an adequate measure to describe the sound field at a given point as a sound energy value.
$E = \frac{I}{c}$, where $I$ is the sound intensity in $\frac{W}{m^2}$ and $c$ is the sound speed in $\frac{m}{s}$.
Sound energy density
Sound Exposure is the energy of the A-weighted sound calculated over the measurement time(s). For a given period of time, an increase of 10 dB(A) in sound pressure level corresponds to a tenfold increase in E.
$E = \int_{t1}^{t2}p^2dt$, where $t1$ and $t2$ are the starting and ending times for the integral and $p$ is the sound pressure.
Applicable units are those of quantitykind:SoundExposure
Sound exposure
Sound Exposure Level abbreviated as $SEL$ and $LAE$, is the total noise energy produced from a single noise event, expressed as a logarithmic ratio from a reference level.
$L_E = 10 \log_{10} \frac{E}{E_0} dB$, where $E$ is sound power and the reference value is $E_0 = 400 \mu Pa^2 s$.
Applicable units are those of quantitykind:SoundExposureLevel
Sound exposure level
Sound intensity or acoustic intensity ($I$) is defined as the sound power $P_a$ per unit area $A$. The usual context is the noise measurement of sound intensity in the air at a listener's location as a sound energy quantity.
$I = pv$, where $p$ is the sound pressure and $v$ is sound particle velocity.
Sound intensity
In a compressible sound transmission medium - mainly air - air particles get an accelerated motion: the particle acceleration or sound acceleration with the symbol a in $m/s2$. In acoustics or physics, acceleration (symbol: $a$) is defined as the rate of change (or time derivative) of velocity.
$a = \frac{\partial v}{\partial t}$, where $v$ is sound particle velocity and $t$ is time.
Sound particle acceleration
Sound Particle Displacement is the nstantaneous displacement of a particle in a medium from what would be its position in the absence of sound waves.
Sound Particle Displacement
Sound Particle velocity is the velocity v of a particle (real or imagined) in a medium as it transmits a wave. In many cases this is a longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string. When applied to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed of a parcel of fluid as it moves back and forth in the direction the sound wave is travelling as it passes.
$v = \frac{\partial\delta }{\partial t}$, where $\delta$ is sound particle displacement and $t$ is time.
Applicable units are those of quantitykind:SoundParticleVelocity
Schallschnelle
prędkość akustyczna
sound particle velocity
velocidad acústica de una partícula
velocidade acústica de uma partícula
velocità di spostamento
vitesse acoustique d‘une particule
سرعة جسيم
粒子速度
prędkość cząstki
Sound power or acoustic power $P_a$ is a measure of sonic energy $E$ per time $t$ unit. It is measured in watts and can be computed as sound intensity ($I$) times area ($A$).
$P_a = IA$, where $I$ is the sound intensity in $\frac{W}{m^2}$ and $A$ is the area in $m^2$.
Schallleistung
moc akustyczna
potencie acústica
potenza sonora
potência acústica
puissance acoustique
sound power
звуковая мощность
القدرة الصوتية
音源の音響出力
potência sonora
Sound Power Level abbreviated as $SWL$ expresses sound power more practically as a relation to the threshold of hearing - 1 picoW - in a logarithmic scale.
$L_W = 10 \log_{10} \frac{P}{P_0} dB$, where $P$ is sound power and the reference value is $P_0 =1pW$.
Sound power level
Sound Pressure is the difference between instantaneous total pressure and static pressure.
Sound pressure
Sound pressure level ($SPL$) or sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level.
$L_P = 10 \log_{10} \frac{p^2}{p_0^2} dB$, where $p$ is sound pressure and the reference value in airborne acoustics is $p_0 = 20 \mu Pa$.
Applicable units are those of quantitykind:SoundPressureLevel
Hladina akustického tlaku
Schalldruckpegel
Tahap medan
gerilim veya akım oranı
livello di pressione sonora
miary wielkości ilorazowych
niveau de pression acoustique
nivel de presión sonora
nível de pressão acústica
sound pressure level
уровень звукового давления
سطح یک کمیت توان-ریشه
كمية جذر الطاقة
利得
声压级
Tahap tekanan bunyi
The Sound Reduction Index is used to measure the level of sound insulation provided by a structure such as a wall, window, door, or ventilator.
$R = 10 \log (\frac{1}{\tau}) dB$, where $\tau$ is the transmission factor.
Applicable units are those of quantitykind:SoundReductionIndex
Sound reduction index
Sound Volume Velocity is the product of particle velocity $v$ and the surface area $S$ through which an acoustic wave of frequency $f$ propagates. Also, the surface integral of the normal component of the sound particle velocity over the cross-section (through which the sound propagates). It is used to calculate acoustic impedance.
$q= vS$, where $v$ is sound particle velocity and $S$ is the surface area through which an acoustic wave of frequence $f$ propagates.
Applicable units are those of quantitykind:SoundVolumeVelocity
Sound volume velocity
The quantity kind $\textit{Source Voltage}$, also referred to as $\textit{Source Tension}$ is the voltage between the two terminals of a voltage source when there is no electric current through the source. The name $\text{electromotive force}$ with the abbreviation $\textit{EMF}$ and the symbol $E$ is deprecated.
Applicable units are those of quantitykind:Voltage
Source Voltage
"Source Voltage Between Substances" is the source voltage between substance a and b.
Source Voltage Between Substances
"Spatial Summation Function" is he ability to produce a composite signal from the signals coming into the eyes from different directions.
Spatial Summation Function
Applicable units are those of quantitykind:SpecificAcousticImpedance
Specific Acoustic Impedance
The "Specific Activity" is the number of decays per unit time of a radioactive sample. The SI unit of radioactive activity is the becquerel (Bq), in honor of the scientist Henri Becquerel.
$a = \frac{A}{m}$, where $A$ is the activity of a sample and $m$ is its mass.
Applicable units are those of quantitykind:SpecificActivity
Specific Activity
Electric charge (often capacity in the context of electrochemical cells) relativ to the mass (often only active components). capacity
Applicable units are those of quantitykind:SpecificElectricCharge
Specific Electric Charge
"Specific Electric Current" is a measure to specify the applied current relative to a corresponding mass. This measure is often used for standardization within electrochemistry.
Applicable units are those of quantitykind:SpecificElectricCurrent
Specific Electrical Current
$\textit{Specific Energy}$ is defined as the energy per unit mass. Common metric units are $J/kg$. It is an intensive property. Contrast this with energy, which is an extensive property. There are two main types of specific energy: potential energy and specific kinetic energy. Others are the $\textit{gray}$ and $\textit{sievert}$, which are measures for the absorption of radiation. $$$$ The concept of specific energy applies to a particular or theoretical way of extracting useful energy from the material considered that is usually implied by context. These intensive properties are each symbolized by using the lower case letter of the symbol for the corresponding extensive property, which is symbolized by a capital letter. For example, the extensive thermodynamic property enthalpy is symbolized by $H$; specific enthalpy is symbolized by $h$.
$e = E/m$, where $E$ is energy and $m$ is mass.
Specific Energy
The "Specific Energy Imparted", is the energy imparted to an element of irradiated matter divided by the mass, dm, of that element.
For ionizing radiation, $z = \frac{\varepsilon}{m}$, where $\varepsilon$ is the energy imparted to irradiated matter and $m$ is the mass of that matter.
Specific Energy Imparted
$\textit{Specific Enthalpy}$ is enthalpy per mass of substance involved. Specific enthalpy is denoted by a lower case h, with dimension of energy per mass (SI unit: joule/kg). In thermodynamics, $\textit{enthalpy}$ is the sum of the internal energy U and the product of pressure p and volume V of a system: $H = U + pV$. The internal energy U and the work term pV have dimension of energy, in SI units this is joule; the extensive (linear in size) quantity H has the same dimension.
$h = H/m$, where $H$ is enthalpy and $m$ is mass.
Specific Enthalpy
"Specific Entropy" is entropy per unit of mass.
$s = S/m$, where $S$ is entropy and $m$ is mass.
Applicable units are those of quantitykind:SpecificEntropy
Specific Entropy
$\textit{Specific Gibbs Energy}$ is a "corresponding intensive property", which is $\textit{Gibbs Energy}$ per mass of substance involved. Energy has corresponding intensive (size-independent) properties for pure materials. $\textit{Specific Gibbs Energy}$ is denoted by a lower case $g$, with dimension of energy per mass (SI unit: $joule/kg$).
$g = G/m$, where $G$ is Gibbs energy and $m$ is mass.
Energy has corresponding intensive (size-independent) properties for pure materials. A corresponding intensive property is "Specific Gibbs Energy}, which is $\textit{Gibbs Energy} per mass of substance involved. $\textit{Specific Gibbs Energy" is denoted by a lower case g, with dimension of energy per mass (SI unit: joule/kg).
Specific Gibbs Energy
"Specific Heat Capacity" of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature. This is $\textit{Heat Capacity}$ divided by $\textit{Mass}$. Note that there are corresponding molar quantities.
Specific Heat Capacity of a solid or liquid is defined as the heat required to raise unit mass of substance by one degree of temperature. This is Heat Capacity divided by Mass. Note that there are corresponding molar quantities.
Specific Heat Capacity
Applicable units are those of quantitykind:SpecificHeatCapacityAtConstantPressure
Specific heat capacity at constant pressure
Applicable units are those of quantitykind:SpecificHeatCapacityAtConstantVolume
Specific heat capacity at constant volume
Applicable units are those of quantitykind:SpecificHeatCapacityAtSaturation
Specific Heat Capacity at Saturation
Applicable units are those of quantitykind:SpecificHeatPressure
Specific Heat Pressure
Applicable units are those of quantitykind:SpecificHeatVolume
Specific Heat Volume
The ratio of specific heats, for the exhaust gases adiabatic gas constant, is the relative amount of compression/expansion energy that goes into temperature $T$ versus pressure $P$ can be characterized by the heat capacity ratio: $\gamma\frac{C_P}{C_V}$, where $C_P$ is the specific heat (also called heat capacity) at constant pressure, while $C_V$ is the specific heat at constant volume.
Specific Heats Ratio
$\textit{Specific Helmholtz Energy}$ is a "corresponding intensive property", which is $\textit{Helmholz Energy}$ per mass of substance involved. Energy has corresponding intensive (size-independent) properties for pure materials. $\textit{Specific Helmholz Energy}$ is denoted by a lower case $u$, with dimension of energy per mass (SI unit: $joule/kg$).
$a = A/m$, where $A$ is Helmholtz energy and $m$ is mass.
Specific Helmholtz Energy
The impulse produced by a rocket divided by the mass $mp$ of propellant consumed. Specific impulse ${I_{sp}}$ is a widely used measure of performance for chemical, nuclear, and electric rockets. It is usually given in seconds for both U.S. Customary and International System (SI) units. The impulse produced by a rocket is the thrust force $F$ times its duration $t$ in seconds. $I_{sp}$ is the thrust per unit mass flowrate, but with $g_o$, is the thrust per weight flowrate. The specific impulse is given by the equation: $I_{sp} = \frac{F}{\dot{m}g_o}$.
Specific Impulse
Specific Impulse by Mass
Specific Impulse by Weight
Energy has corresponding intensive (size-independent) properties for pure materials. A corresponding intensive property is specific internal energy, which is energy per mass of substance involved. Specific internal energy is denoted by a lower case u, with dimension of energy per mass (SI unit: joule/kg).
$u = U/m$, where $U$ is thermodynamic energy and $m$ is mass.
Specific Internal Energy
Specific modulus is a materials property consisting of the elastic modulus per mass density of a material. It is also known as the stiffness to weight ratio or specific stiffness. High specific modulus materials find wide application in aerospace applications where minimum structural weight is required. The dimensional analysis yields units of distance squared per time squared.
$specific modulus = E/\rho$, where $E$ is elastic modulus and $\rho$ is density.
Applicable units are those of quantitykind:SpecificModulus
Specific Modulus
Specific Stiffness
Stiffness to Weight Ratio
material-specific quantity, which results as angle of rotation of a substance for a defined wavelength and a defined temperature from the relation: quotient of measured angle of rotation divided by the mass concentration and the radiographed distance
materialspezifische Größe, die sich als Drehwinkel einer Substanz für eine bestimmte Wellenlänge und eine bestimmte Temperatur ergibt durch die Beziehung: Quotient aus gemessener Drehwinkel dividiert durch die Massenkonzentration und die durchstrahlte Wegstrecke
specific optical rotational ability
The "Specific Optical Rotatory Power" Angle of optical rotation divided by the optical path length through the medium and by the mass concentration of the substance giving the specific optical rotatory power.
$\alpha_m = \alpha \frac{A}{m}$, where $\alpha$ is the angle of optical rotation, and $m$ is the mass of the optically active component in the path of a linearly polarized light beam of cross sectional area $A$.
Applicable units are those of quantitykind:SpecificOpticalRotatoryPower
Specific Optical Rotatory Power
Specific power, also known as power-to-weight ratio, is the amount of power output per unit mass of the power source. It is generally used to measure the performance of that power source. The higher the ratio, the more power a system produces relative to its weight. It's commonly used in the automotive and aerospace industries to compare the performance of different engines. It's generally measured in watts per kilogram (W/kg) or horsepower per pound (hp/lb).
Specific Power
Power-to-Weight Ratio
Specific surface area (SSA) is a property of solids defined as the total surface area (SA) of a material per unit mass, (with units of m2/kg or m2/g). It is a physical value that can be used to determine the type and properties of a material (e.g. soil or snow). It has a particular importance for adsorption, heterogeneous catalysis, and reactions on surfaces.
$SSA = \frac{SA}{\m}$, where $SA$ is the surface area of an object and $\m$ is the mass density of the object.
Specific surface area (SSA) is a property of solids defined as the total surface area (SA) of a material per unit mass, (with units of m²/kg or m²/g). It is a physical value that can be used to determine the type and properties of a material (e.g. soil or snow). It has a particular importance for adsorption, heterogeneous catalysis, and reactions on surfaces.
Applicable units are those of quantitykind:SpecificSurfaceArea
Specific Surface Area
Specific impulse (usually abbreviated Isp) is a way to describe the efficiency of rocket and jet engines. It represents the force with respect to the amount of propellant used per unit time.[1] If the "amount" of propellant is given in terms of mass (such as kilograms), then specific impulse has units of velocity. If it is given in terms of Earth-weight (such as kiloponds), then specific impulse has units of time. The conversion constant between the two versions of specific impulse is g. The higher the specific impulse, the lower the propellant flow rate required for a given thrust, and in the case of a rocket the less propellant is needed for a given delta-v per the Tsiolkovsky rocket equation.
Specific thrust
"Specific Volume" ($\nu$) is the volume occupied by a unit of mass of a material. It is equal to the inverse of density.
$sv = \frac{1}{\rho}$, where $\rho$ is mass density.
Specific Volume
The specific weight, also known as the unit weight is a volume-specific quantity defined as the weight per unit volume of a material. Note that weight is defined as a force, distinct from mass.
Applicable units are those of quantitykind:SpecificWeight
specific weight
"Spectral Angular Cross-section" is the cross-section for ejecting or scattering a particle into an elementary cone with energy $E$ in an energy interval, divided by the solid angle $d\Omega$ of that cone and the range $dE$ of that interval.
$\sigma = \int \int \sigma_{\Omega,E} d\Omega dE$
Applicable units are those of quantitykind:SpectralAngularCrossSection
Spectral Angular Cross-section
energy distribution of the instantaneous value of radiant energy in relation to the volume of the propagation medium
Energieverteilung des Augenblickswertes der Strahlungsenergie, bezogen auf das Volumen des Ausbreitungsmediums
spectral concentration of radiant energy density
number of vibrational modes in an infinitesimal interval of angular frequency, divided by the size of that interval and by volume
Anzahl von Vibrationsmodi in einem infinitesimalen Energie-Intervall der Kreisfrequenz, dividiert durch die Größe dieses Energie-Intervalls und durch das zugehörige Volumen
spectral concentration of vibrational modes (in terms of angular frequency)
"Spectral Cross-section" is the cross-section for a process in which the energy of the ejected or scattered particle is in an interval of energy, divided by the range $dE$ of this interval.
Applicable units are those of quantitykind:SpectralCrossSection
Spectral Cross-section
Applicable units are those of quantitykind:SpectralDensityOfVibrationalModes
Spectral Emittance is a radiometry term for the power per unit area of electromagnetic radiation unit wavelength emerging from a surface.
Spectral Irradiance is a radiometry term for the power per unit area of electromagnetic radiation per unit wavelength incident at a surface.
The Spectral Luminous Efficiency is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. A common choice is to choose units such that the maximum possible efficacy, 683 lm/W, corresponds to an efficiency of 100%.
$V(\lambda) = \frac{\Phi_\lambda(\lambda_m)}{\Phi_\lambda(\lambda)}$, where $\Phi_\lambda(\lambda_m)$ is the spectral radiant flux at wavelength $\lambda_m$ and $\Phi_\lambda(\lambda)$ is the spectral radiant flux at wavelength $\lambda$, such that both radiations produce equal luminous sensations under specified photometric conditions and $\lambda_m$ is chosen so that the maximum value of this ratio is equal to 1.
Spectral Luminous Efficiency
Spectral Radiance is a radiometry term for the power per unit area of electromagnetic radiation per unit wavelength per unit solid angle emerging from a surface.
Applicable units are those of quantitykind:SpectralRadiance
"Spectral Radiant Energy Density" is the spectral concentration of radiant energy density (in terms of wavelength), or the spectral radiant energy density (in terms of wave length).
Applicable units are those of quantitykind:SpectralRadiantEnergyDensity
Spectral Radiant Energy Density
spectral radiant energy density in terms of wavelength
Applicable units are those of quantitykind:Speed
Speed
The quantity kind $\text{Speed of Light}$ is the speed of electomagnetic waves in a given medium.
Hitrost svetlobe
Işık hızı
Kelajuan cahaya
Lichtgeschwindigkeit
Prędkość światła
Rychlost světla
Velocidade da luz
Viteza luminii
speed of light
velocidad de la luz
velocità della luce
vitesse de la lumière
Скорость света
سرعة الضوء
سرعت نور
प्रकाश का वेग
光速
The speed of sound is the distance travelled during a unit of time by a sound wave propagating through an elastic medium.
$c = \sqrt{\frac{K}{\rho}}$, where $K$ is the coefficient of stiffness, the bulk modulus (or the modulus of bulk elasticity for gases), and $\rho$ is the density. Also, $c^2 = \frac{\partial p}{\partial \rho}$, where $p$ is the pressure and $\rho$ is the density.
Hitrost zvoka
Kelajuan bunyi
Schallgeschwindigkeit
Ses hızı
prędkość dźwięku
rychlost zvuku
speed of sound
velocidad del sonido
velocidade do som
velocità del suono
vitesse du son
viteza sunetului
скорость звука
سرعة الصوت
سرعت صوت
ध्वनि का वेग
音速
Schallausbreitungsgeschwindigkeit
célérité du son
Speed ratio generally refers to the ratio of the rotational speeds of two interconnected rotating components, but it sometimes relates linear speeds.
Speed Ratio
Spherical illuminance is equal to quotient of the total luminous flux $\Phi_v$ incident on a small sphere by the cross section area of that sphere.
$E_v,0 = \int_{4\pi sr}{L_v}{d\Omega}$, where $d\Omega$ is the solid angle of each elementary beam passing through the given point and $L_v$ is its luminance at that point in the direction of the beam.
Illuminance
In quantum mechanics and particle physics "Spin" is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.
Spin
espín
spin
Спин
اسپین/چرخش
لف مغزلي
スピン角運動量
自旋
$s^2 = \hbar^2 s(s + 1)$, where $s$ is the spin quantum number and $\hbar$ is the Planck constant.
Applicable units are those of quantitykind:SpinQuantumNumber
Applicable units are those of quantitykind:SquareTime
Square Time
Stage Propellant Mass
Stage Structure Mass
The "Standard Absolute Activity" is proportional to the absoulte activity of the pure substance $B$ at the same temperature and pressure multiplied by the standard pressure.
$\lambda_B^\Theta = \lambda_B^*(p^\Theta)$, where $\lambda_B^\Theta$ the absolute activity of the pure substance $B$ at the same temperature and pressure, and $p^\Theta$ is standard pressure.
Applicable units are those of quantitykind:StandardAbsoluteActivity
Standard Absolute Activity
"Standard Chemical Potential" is the value of the chemical potential at standard conditions
Standard Chemical Potential
In celestial mechanics the standard gravitational parameter of a celestial body is the product of the gravitational constant G and the mass M of the body. Expressed as $\mu = G \cdot M$. The SI units of the standard gravitational parameter are $m^{3}s^{-2}$.
Applicable units are those of quantitykind:StandardGravitationalParameter
Standard Gravitational Parameter
function of energy in a solid, determined by the number of permissible quantum states in the energy range between E and E+dE per volume of material of this solid
Funktion der Energie in einem Festkörper, bestimmt durch die Anzahl von erlaubten Quantenzuständen im Energiebereich zwischen E und E+dE je Volumen des Materials dieses Festkörpers
state density
ratio between number of vibration modes in an infinitesimal interval of the angular frequency and the length of this interval and the volume
Quotient aus Anzahl von Vibrationsmodi in einem infinitesimalen Intervall der Kreisfrequenz durch die Spannweite dieses Intervalls und das Volumen
state density as expression of angular frequency)
state density as expression of angular frequency
"State of Charge",quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing.
""State of Charge",quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing.
Applicable units are those of quantitykind:StateOfCharge
State of charge
Remaining battery energy level
Static friction is friction between two or more solid objects that are not moving relative to each other. For example, static friction can prevent an object from sliding down a sloped surface.
Static Friction
$\mu = \frac{F_max}{N}$, where $F_max$ is the maximum tangential component of the contact force and $N$ is the normal component of the contact force between two bodies at relative rest.
Static Friction Coefficient
"Static Pressure" is the pressure at a nominated point in a fluid. Every point in a steadily flowing fluid, regardless of the fluid speed at that point, has its own static pressure $P$, dynamic pressure $q$, and total pressure $P_0$. The total pressure is the sum of the dynamic and static pressures, that is $P_0 = P + q$.
Static pressure
A "Statistical Weight" is the relative probability (possibly unnormalized) of a particular feature of a state.
Applicable units are those of quantitykind:StatisticalWeight
Statistical Weight
In probability theory, a stochastic process, or sometimes random process is a collection of random variables; this is often used to represent the evolution of some random value, or system, over time. This is the probabilistic counterpart to a deterministic process (or deterministic system).
Stochastic Process
Chemical reactions, as macroscopic unit operations, consist of simply a very large number of elementary reactions, where a single molecule reacts with another molecule. As the reacting molecules (or moieties) consist of a definite set of atoms in an integer ratio, the ratio between reactants in a complete reaction is also in integer ratio. A reaction may consume more than one molecule, and the "Stoichiometric Number" counts this number, defined as positive for products (added) and negative for reactants (removed).
Applicable units are those of quantitykind:StoichiometricNumber
Stoichiometric Number
In any branch of science dealing with materials and their behaviour, strain is the geometrical expression of deformation caused by the action of stress on a physical body. Strain is calculated by first assuming a change between two body states: the beginning state and the final state. Then the difference in placement of two points in this body in those two states expresses the numerical value of strain. Strain therefore expresses itself as a change in size and/or shape. [Wikipedia]
Strain
Defined as the 'work done' for a given strain, that is the area under the stress-strain curve after a specified eation. Source(s): http://www.prepol.com/product-range/product-subpages/terminology
Strain Energy Density
In fracture mechanics, the energy release rate, G, is the rate at which energy is transformed as a material undergoes fracture. Mathematically, the energy release rate is expressed as the decrease in total potential energy per increase in fracture surface area, and is thus expressed in terms of energy per unit area.
Applicable units are those of quantitykind:StrainEnergyReleaseRate
Strain Energy Release Rate
Stress is a measure of the average amount of force exerted per unit area of a surface within a deformable body on which internal forces act. In other words, it is a measure of the intensity or internal distribution of the total internal forces acting within a deformable body across imaginary surfaces. These internal forces are produced between the particles in the body as a reaction to external forces applied on the body. Stress is defined as ${\rm{Stress}} = \frac{F}{A}$.
Stress
In fracture mechanics, the stress intensity factor (K) is used to predict the stress state ("stress intensity") near the tip of a crack or notch caused by a remote load or residual stresses. It is a theoretical construct usually applied to a homogeneous, linear elastic material and is useful for providing a failure criterion for brittle materials, and is a critical technique in the discipline of damage tolerance. The concept can also be applied to materials that exhibit small-scale yielding at a crack tip.
Applicable units are those of quantitykind:StressIntensityFactor
Stress Intensity Factor
When a ray of light passes through a photoelastic material, its electromagnetic wave components are resolved along the two principal stress directions and each component experiences a different refractive index due to the birefringence. The difference in the refractive indices leads to a relative phase retardation between the two components. Assuming a thin specimen made of isotropic materials, where two-dimensional photoelasticity is applicable, the magnitude of the relative retardation is given by the stress-optic law Δ=((2πt)/λ)C(σ₁-σ₂), where Δ is the induced retardation, C is the stress-optic coefficient, t is the specimen thickness, λ is the vacuum wavelength, and σ₁ and σ₂ are the first and second principal stresses, respectively.
When a ray of light passes through a photoelastic material, its electromagnetic wave components are resolved along the two principal stress directions and each component experiences a different refractive index due to the birefringence. The difference in the refractive indices leads to a relative phase retardation between the two components. Assuming a thin specimen made of isotropic materials, where two-dimensional photoelasticity is applicable, the magnitude of the relative retardation is given by the stress-optic law $\Delta ={\frac {2\pi t}{\lambda }}C(\sigma _{1}-\sigma _{2})$, where $\Delta$ is the induced retardation, $C$ is the stress-optic coefficient, $t$ is the specimen thickness, $\lambda$ is the vacuum wavelength, and $\sigma_1$ and $\sigma_2$ are the first and second principal stresses, respectively.
Applicable units are those of quantitykind:StressOpticCoefficient
Stress-Optic Coefficient
Structural efficiency is a function of the weight of structure to the afforded vehicle's strength.
Structural Efficiency
"Structure Factor" is a mathematical description of how a material scatters incident radiation.
$F(h, k, l) = \sum_{n=1}^N f_n\exp{[2\pi i(hx_n + ky_n +lz_n)]}$, where $f_n$ is the atomic scattering factor for atom $n$, and $x_n$, $y_n$, and $z_n$ are fractional coordinates in the unit cell; for $h$, $k$, and $l$.
Applicable units are those of quantitykind:StructureFactor
Structure Factor
Applicable units are those of quantitykind:SunProtectionFactorOfAProduct
"Superconduction Transition Temperature" is the critical thermodynamic temperature of a superconductor.
Superconduction Transition Temperature
"Superconductor Energy Gap" is the width of the forbidden energy band in a superconductor.
Superconductor Energy Gap
The "Surface Activity Density" is undefined.
$a_s = \frac{A}{S}$, where $S$ is the total area of the surface of a sample and $A$ is its activity.
Applicable units are those of quantitykind:SurfaceActivityDensity
Surface Activity Density
$q = h (T_s - T_r)$, where $T_s$ is areic heat flow rate is the thermodynamic temperature of the surface, and is a reference thermodynamic temperature characteristic of the adjacent surroundings.
Applicable units are those of quantitykind:SurfaceCoefficientOfHeatTransfer
Surface Coefficient of Heat Transfer
The area density (also known as areal density, surface density, or superficial density) of a two-dimensional object is calculated as the mass per unit area.
$\rho_A = \frac{dm}{dA}$, where $m$ is mass and $A$ is area.
Applicable units are those of quantitykind:SurfaceDensity
Surface Density
quotient of the volume of a material, which passes through a specified surface, and the therefor required time divided by this specified area
Quotient aus dem Volumen eines Stoffes, das durch eine vorgegebene Oberfläche hindurchgeht, und der dazu benötigten Zeit dividiert durch diese vorgegebene Fläche
Applicable units are those of quantitykind:SurfaceRelatedVolumeFlow
surface-related volume flow
Applicable units are those of quantitykind:SurfaceRelatedVolumeFlowRate
"Surface Tension" is a contractive tendency of the surface of a liquid that allows it to resist an external force.
$\gamma = \frac{dF}{dl}$, where $F$ is the force component perpendicular to a line element in a surface and $l$ is the length of the line element.
Oberflächenspannung
Tegangan permukaan
Tensiune superficială
Yüzey gerilimi
napięcie powierzchniowe
povrchové napětí
površinska napetost
surface tension
tension superficielle
tensione superficiale
tensión superficial
tensão superficial
поверхностное натяжение
توتر سطحي
کشش سطحی
पृष्ठ तनाव
表面张力
表面張力
tension de surface
in a mechanical system the area-related quotient of a force affecting to a point divided by the resulting component of the particle velocity in direction of the force
in einem mechanischen System der flächenbezogene Quotient einer an einem Punkt angreifenden Kraft durch die resultierende Komponente der Teilchengeschwindigkeit in Richtung der Kraft
surge impedance of the medium
"Susceptance" is the imaginary part of admittance. The inverse of admittance is impedance and the real part of admittance is conductance.
$B = \lim{\underline{Y}}$, where $\underline{Y}$ is admittance.
Susceptance
rate, at which a symbol, consisting of one or more bits, is transmitted per second
Geschwindigkeit, mit der ein aus mehreren Bit bestehendes Symbol je Sekunde übertragen wird
symbol transmission rate
Systolic Blood Pressure
An informal mass limit established by a Project Office (at the Element Integrated Product Team (IPT) level or below) to control mass.
Target Bogie Mass
Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot. Heat spontaneously flows from bodies of a higher temperature to bodies of lower temperature, at a rate that increases with the temperature difference and the thermal conductivity.
Temperature
Applicable units are those of quantitykind:TemperatureAmountOfSubstance
Temperature Amount of Substance
ratio of material concentration divided by the related temperature
Quotient aus Stoffmengenkonzentration dividiert durch die zugehörige Temperatur
temperature-based amount-of-substance concentration
ratio of density divided by the related temperature
Quotient aus Dichte dividiert durch die zugehörige Temperatur
temperature-based density
ratio of dynamic viscosity, divided by temperature
Quotient der dynamischen Viskosität dividiert durch die Temperatur
temperature-based dynamic viscosity
ratio of dynamic viscosity and the density of a material, divided by the related temperature
Quotient aus der dynamischen Viskosität und der Dichte eines Stoffes dividiert durch die zugehörige Temperatur
temperature-based kinematic viscosity
ratio of length divided by the related temperature
Quotient aus Länge dividiert durch die zugehörige Temperatur
temperature-based length
ratio of mass divided by the related temperature
Quotient aus Masse dividiert durch die zugehörige Temperatur
temperature-based mass
ratio of mass flow divided by the related temperature
Quotient aus Massenstrom dividiert durch die zugehörige Temperatur
temperature-based mass flow rate
temperature-based quantity
ratio of velocity divided by the related temperature
Quotient aus Geschwindigkeit dividiert durch die zugehörige Temperatur
temperature-based velocity
ratio of volume flow divided by the related temperature
Quotient aus Volumenstrom dividiert durch die zugehörige Temperatur
temperature-based volume flow rate
Temperature difference (Delta T) is the difference of temperatures between two measuring points
Temperaturdifferenz
temperature difference
The temperature gradient measures the difference of a temperature per length, as for instance used in an external wall or its layers. It is usually measured in K/m.
Applicable units are those of quantitykind:TemperatureGradient
Temperature Gradient
Applicable units are those of quantitykind:TemperaturePerMagneticFluxDensity
Temperature per Magnetic Flux Density
Applicable units are those of quantitykind:TemperaturePerSquareTime
Temperature per Square Time
Applicable units are those of quantitykind:TemperaturePerTime
Temperature per Time
Temperature per Time Squared
The "Temperature Rate of Change" measures the difference of a temperature per time (positive: rise, negative: fall), as for instance used with heat sensors. It is for example measured in K/s.
Temperature Rate of Change
Applicable units are those of quantitykind:TemperatureRatio
Temperature Ratio
molarity (mass of a substance in relation to the amount of this substance) divided by temperature
Molarität (Masse einer Substanz bezogen auf die Stoffmenge dieser Substanz ) dividiert durch die Temperatur
temperature-related molar mass
volume divided by temperature
Volumen dividiert durch Temperatur
temperature-related volume
Applicable units are those of quantitykind:TemperatureVariance
Temperature Variance
Variance for NEON temperature data measured in degrees celcius
Temperature Variance, NEON
"Temporal Summation Function" is the ability of the human eye to produce a composite signal from the signals coming into an eye during a short time interval.
Applicable units are those of quantitykind:TemporalSummationFunction
Temporal Summation Function
Tension
The heat transfer coefficient is also known as thermal admittance in the sense that the material may be seen as admitting heat to flow.
Thermal Admittance
ratio between the supplied quantity of heat and the temperature range caused by the supplied quantity of heat
Quotient aus der zugeführten Wärmemenge und der Temperaturänderungen, die durch diese zugeführte Wärmemenge verursacht wird
Applicable units are those of quantitykind:ThermalCapacitance
thermal capacitance
median relative change in length over a specific length of the test piece, divided by the temperature range caused by it
auf eine festgelegte Länge des Probekörpers bezogene mittlere relative Längenänderung dividiert durch die sie verursachende Temperaturänderung
thermal coefficient of linear expansion
This quantity is also called "Heat Transfer Coefficient".
$G = 1/R$, where $R$ is "Thermal Resistance"
Applicable units are those of quantitykind:ThermalConductance
Thermal Conductance
In physics, thermal conductivity, $k$ (also denoted as $\lambda$), is the property of a material's ability to conduct heat. It appears primarily in Fourier's Law for heat conduction and is the areic heat flow rate divided by temperature gradient.
$\lambda = \frac{\varphi}{T}$, where $\varphi$ is areic heat flow rate and $T$ is temperature gradient.
Applicable units are those of quantitykind:ThermalConductivity
Thermal Conductivity
Thermal diffusion is a phenomenon in which a temperature gradient in a mixture of fluids gives rise to a flow of one constituent relative to the mixture as a whole. in the context of the equation that describes thermal diffusion, the "Thermal Diffusion Factor" is .
$\alpha_T = \frac{k_T}{(x_A x_B)}$, where $k_T$ is the thermal diffusion ratio, and $x_A$ and $x_B$ are the local amount-of-substance fractions of the two substances $A$ and $B$.
Applicable units are those of quantitykind:ThermalDiffusionFactor
Thermal Diffusion Factor
The "Thermal Diffusion Ratio" is proportional to the product of the component concentrations.
In a steady state of a binary mixture in which thermal diffusion occurs, $grad x_B = -(\frac{k_T}{T}) grad T$, where $x_B$ is the amount-of-substance fraction of the heavier substance $B$, and $T$ is the local thermodynamic temperature.
Applicable units are those of quantitykind:ThermalDiffusionRatio
Thermal Diffusion Ratio
The "Thermal Diffusion Coefficient" is .
$D_T = kT \cdot D$, where $k_T$ is the thermal diffusion ratio, and $D$ is the diffusion coefficient.
Applicable units are those of quantitykind:ThermalDiffusionRatioCoefficient
Thermal Diffusion Coefficient
In heat transfer analysis, thermal diffusivity (usually denoted $\alpha$ but $a$, $\kappa$,$k$, and $D$ are also used) is the thermal conductivity divided by density and specific heat capacity at constant pressure. The formula is: $\alpha = {k \over {\rho c_p}}$, where k is thermal conductivity ($W/(\mu \cdot K)$), $\rho$ is density ($kg/m^{3}$), and $c_p$ is specific heat capacity ($\frac{J}{(kg \cdot K)}$) .The denominator $\rho c_p$, can be considered the volumetric heat capacity ($\frac{J}{(m^{3} \cdot K)}$).
$a = \frac{\lambda}{\rho c_\rho}$, where $\lambda$ is thermal conductivity, $\rho$ is mass density and $c_\rho$ is specific heat capacity at constant pressure.
Thermal Diffusivity
Thermal efficiency is a dimensionless performance measure of a thermal device such as an internal combustion engine, a boiler, or a furnace. The input to the device is heat, or the heat-content of a fuel that is consumed. The desired output is mechanical work, or heat, or possibly both.
Thermal Efficiency
"Thermal Energy" is the portion of the thermodynamic or internal energy of a system that is responsible for the temperature of the system. From a macroscopic thermodynamic description, the thermal energy of a system is given by its constant volume specific heat capacity C(T), a temperature coefficient also called thermal capacity, at any given absolute temperature (T): $U_{thermal} = C(T) \cdot T$.
Thermal Energy
Applicable units are those of quantitykind:ThermalEnergyLength
Thermal Energy Length
The "Thermal Expansion Coefficient" is a measure of the thermal expansion coefficient of a material, which expresses its elongation (as a ratio) per temperature difference. It is usually measured in 1/K. A positive elongation per (positive) rise of temperature is expressed by a positive value.
Applicable units are those of quantitykind:ThermalExpansionCoefficient
Thermal Expansion Coefficient
$\textit{Thermal Insulance}$ is the reduction of heat transfer (the transfer of thermal energy between objects of differing temperature) between objects in thermal contact or in range of radiative influence. In building technology, this quantity is often called $\textit{Thermal Resistance}$, with the symbol $R$.
$M = 1/K$, where $K$ is "Coefficient of Heat Transfer"
Applicable units are those of quantitykind:ThermalInsulance
Thermal Insulance
temperature difference between two surfaces divided by areic heat flow rate in the direction of the temperature gradient
Temperaturdifferenz zwischen zwei Oberflächen dividiert durch den flächenbezogenen Wärmestrom in der Richtung des Temperaturgradienten
thermal insulation
$\textit{Thermal Resistance}$ is a heat property and a measure of a temperature difference by which an object or material resists a heat flow (heat per time unit or thermal resistance). Thermal resistance is the reciprocal thermal conductance. the thermodynamic temperature difference divided by heat flow rate. Thermal resistance $R$ has the units $\frac{m^2 \cdot K}{W}$.
Applicable units are those of quantitykind:ThermalResistance
opór cieplny
resistencia térmica
resistenza termica
resistência térmica
résistance thermique
thermal resistance
thermischer Widerstand
مقاومة حرارية
热阻
熱抵抗
Wärmewiderstand
The reciprocal of thermal conductivity is thermal resistivity, measured in $kelvin-metres$ per watt ($K \cdot m/W$).
Applicable units are those of quantitykind:ThermalResistivity
Thermal Resistivity
Thermal transmittance is the rate of transfer of heat through matter. The thermal transmittance of a material (such as insulation or concrete) or an assembly (such as a wall or window) is expressed as a U-value. The concept of thermal transmittance is closely related to that of thermal resistance. The thermal resistance of a structure is the reciprocal of its thermal transmittance.
Thermal Transmittance
The "Thermal Utilization Factor" in an infinite medium, is the ratio of the number of thermal absorbed in a fissionable nuclide or in a nuclear fuel, as specified, to the total number of thermal neutrons absorbed.
Applicable units are those of quantitykind:ThermalUtilizationFactor
Thermal Utilization Factor
Probability that a neutron that gets absorbed does so in the fuel material.
Thermal Utilization Factor For Fission
"Thermodynamic Critical Magnetic Flux Density" is the maximum magnetic field strength below which a material remains superconducting.
$G_n - G_s = \frac{1}{2}\frac{B_c^2 \cdot V}{\mu_0}$, where $G_n$ and $G_s$ are the Gibbs energies at zero magnetic flux density in a normal conductor and superconductor, respectively, $\mu_0$ is the magnetic constant, and $V$ is volume.
Thermodynamic Critical Magnetic Flux Density
Thermodynamic Energy
Thermodynamic Entropy is a measure of the unavailability of a system’s energy to do work. It is a measure of the randomness of molecules in a system and is central to the second law of thermodynamics and the fundamental thermodynamic relation, which deal with physical processes and whether they occur spontaneously. The dimensions of entropy are energy divided by temperature, which is the same as the dimensions of Boltzmann's constant ($kB$) and heat capacity. The SI unit of entropy is $joule\ per\ kelvin$. [Wikipedia]
Thermodynamic Entropy
Thermodynamic temperature is the absolute measure of temperature and is one of the principal parameters of thermodynamics. Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. In thermodynamics, in a system of which the entropy is considered as an independent externally controlled variable, absolute, or thermodynamic temperature is defined as the derivative of the internal energy with respect to the entropy. This is a base quantity in the International System of Quantities, ISQ, on which the International System of Units, SI, is based.
Suhu termodinamik
Termodynamická teplota
abszolút hőmérséklet
temperatura termodinamica
temperatura thermodynamica absoluta
temperatură termodinamică
température thermodynamique
termodinamik sıcaklık
thermodynamic temperature
thermodynamische Temperatur
Απόλυτη
Термодинамическая температура
Термодинамична температура
טמפרטורה מוחלטת
درجة الحرارة المطلقة
دمای ترمودینامیکی
ऊष्मगतिकीय तापमान
热力学温度
熱力学温度
temperatura assoluta
Θερμοδυναμική Θερμοκρασία
"Thickness" is the the smallest of three dimensions: length, width, thickness.
Thickness
"Thomson Coefficient" represents Thomson heat power developed, divided by the electric current and the temperature difference.
Applicable units are those of quantitykind:ThomsonCoefficient
Thomson Coefficient
Thrust is a reaction force described quantitatively by Newton's Second and Third Laws. When a system expels or accelerates mass in one direction the accelerated mass will cause a proportional but opposite force on that system. The pushing or pulling force developed by an aircraft engine or a rocket engine. The force exerted in any direction by a fluid jet or by a powered screw, as, the thrust of an antitorque rotor. Specifically, in rocketry, $ F\,= m\cdot v$ where m is propellant mass flow and v is exhaust velocity relative to the vehicle. Also called momentum thrust.
Thrust is a reaction force described quantitatively by Newton's Second and Third Laws. When a system expels or accelerates mass in one direction the accelerated mass will cause a proportional but opposite force on that system.
Thrust
The thrust force of a jet-propulsion engine per unit of frontal area per unit of incompressible dynamic pressure
Thrust Coefficient
Applicable units are those of quantitykind:ThrustToMassRatio
Thrust To Mass Ratio
Thrust-to-weight ratio is a ratio of thrust to weight of a rocket, jet engine, propeller engine, or a vehicle propelled by such an engine. It is a dimensionless quantity and is an indicator of the performance of the engine or vehicle.
Thrust To Weight Ratio
Applicable units are those of quantitykind:ThrusterPowerToThrustEfficiency
Thruster Power To Thrust Efficiency
The angle between an object's orientation vector relative to a reference frame. In the context of architecture, this would refer to the angle between the ground and the face of a surface.
Tilt
Time is a basic component of the measuring system used to sequence events, to compare the durations of events and the intervals between them, and to quantify the motions of objects.
Masa
Zeit
czas
idő
tempo
temps
tempus
tiempo
time
timp
zaman
Čas
čas
Χρόνος
Време
Время
זמן
زمان
زمن
समय
时间
時間
$I = \frac{1}{t2 - t1} \int_{t1}^{t2}i(t)dt$, where $t1$ and $t2$ are the starting and ending times for the integral and $i$ is sound intensity.
Time averaged sound intensity
Applicable units are those of quantitykind:TimeRatio
Time Ratio
logarithm of the ratio of the value of a defined variable to the value of a reference variable of the same type, divided by the related time
Logarithmus des Verhältnisses des Werts einer gegebenen Größe zum Wert einer Bezugsgröße gleicher Art dividiert durch die zugehörige Zeit
time-related logarithmic ratio
Time Temperature
Time Squared
In physics, a torque ($\tau$) is a vector that measures the tendency of a force to rotate an object about some axis. The magnitude of a torque is defined as force times its lever arm. Just as a force is a push or a pull, a torque can be thought of as a twist. The SI unit for torque is newton meters ($N m$). In U.S. customary units, it is measured in foot pounds (ft lbf) (also known as "pounds feet"). Mathematically, the torque on a particle (which has the position r in some reference frame) can be defined as the cross product: $τ = r x F$ where, r is the particle's position vector relative to the fulcrum F is the force acting on the particles, or, more generally, torque can be defined as the rate of change of angular momentum: $τ = dL/dt$ where, L is the angular momentum vector t stands for time.
$\tau = M \cdot e_Q$, where $M$ is the momentof force and $e_Q$ is a unit vector directed along a $Q-axis$ with respect to which the torque is considered.
Torsionmoment
coppia
couple
moment obrotowy
momento de torção
par
torque
عزم محورى
トルク
转矩
Drillmoment
binârio
moment de torsion
momento de torsión
momento torcente
product of magnetic induction, number of turns per unit length, and the area enclosed by the coil corresponding to the gradient of the curve representing the ratio between the torque of the motor and the current
Produkt aus der magnetischen Induktion, der Windungszahl und der von der Spule eingeschlossenen Fläche entsprechend der Steigung der Kurve des Verhältnisses Drehmoment des Motors zum Strom
torque constant
Torque per Angle
Applicable units are those of quantitykind:TorquePerLength
Torque per Length
ratio between the turning moment for elastic deformation of a torsion spring and the related angle of rotation
A torsional spring constant is a measure of the stiffness of a torsional spring, which is a type of spring that experiences twisting or torque rather than compression or extension. It is typically measured in newton-meters per radian (N·m/rad) and is used to calculate the amount of torque required to twist a spring a certain amount. It is related to the spring's geometry, material properties, and manufacturing process.
Quotient Drehmoment zur elastischen Verformung einer Drehfeder durch den zugehörigen Drehwinkel
Applicable units are those of quantitykind:TorsionalSpringConstant
Federkonstante Drehfeder
torsional spring constant
"Total Angular Momentum" combines both the spin and orbital angular momentum of all particles and fields. In atomic and nuclear physics, orbital angular momentum is usually denoted by $l$ or $L$ instead of $\Lambda$. The magnitude of $J$ is quantized so that $J^2 = \hbar^2 j(j + 1)$, where $j$ is the total angular momentum quantum number.
Total Angular Momentum
The "Total Angular Quantum Number" describes the magnitude of total angular momentum $J$, where $j$ refers to a specific particle and $J$ is used for the whole system.
Applicable units are those of quantitykind:TotalAngularMomentumQuantumNumber
Total Angular Momentum Quantum Number
The "Total Atomic Stopping Power" for an ionizing particle passing through an element, is the particle's energy loss per atom within a unit area normal to the particle's path; equal to the linear energy transfer (energy loss per unit path length) divided by the number of atoms per unit volume.
$S_a = \frac{S}{n}$, where $S$ is the total linear stopping power and $n$ is the number density of the atoms in the substance.
Applicable units are those of quantitykind:TotalAtomicStoppingPower
Total Atomic Stopping Power
"Total Cross-section" is related to the absorbance of the light intensity through Beer-Lambert's law. It is the sum of all cross-sections corresponding to the various reactions or processes between an incident particle of specified type and energy and a target particle.
Total Cross-section
"Total Current" is the sum of the electric current that is flowing through a surface and the displacement current.
$I_{tot}= I + I_D$, where $I$ is electric current and $I_D$ is displacement current.
Applicable units are those of quantitykind:TotalCurrent
Total Current
"Total Current Density" is the sum of the electric current density and the displacement current density.
$J_{tot}= J + J_D$, where $J$ is electric current density and $J_D$ is displacement current density.
Applicable units are those of quantitykind:TotalCurrentDensity
Total Current Density
"Total Ionization" by a particle, total mean charge, divided by the elementary charge, $e$, of all positive ions produced by an ionizing charged particle along its entire path and along the paths of any secondary charged particles.
Applicable units are those of quantitykind:TotalIonization
Total Ionization
The "Total Linear Stopping Power" is defined as the average energy loss of the particle per unit path length.
$S = -\frac{dE}{dx}$, where $-dE$ is the energy decrement in the $x-direction$ along an elementary path with the length $dx$.
Applicable units are those of quantitykind:TotalLinearStoppingPower
Total Linear Stopping Power
If a substance is compared in gaseous and solid form, then the linear stopping powers of the two states are very different just because of the different density. One therefore often divides S(E) by the density of the material to obtain the "Mass Stopping Power". The mass stopping power then depends only very little on the density of the material.
$S_m = \frac{S}{\rho}$, where $S$ is the total linear stopping power and $\rho$ is the mass density of the sample.
Applicable units are those of quantitykind:TotalMassStoppingPower
Total Mass Stopping Power
The total pressure is the sum of the dynamic and static pressures, that is $P_0 = P + q$.
Total Pressure
ratio between the differential change in the energy fluence dΨ and the time interval dt: ψ = dΨ / dt; the total radiance is identical to the product of the particle flux density and the average energy of the particles
Quotient aus der differentiellen Änderung der Energiefluenz dΨ im Zeitintervall dt: ψ = dΨ / dt; die Energieflussdichte ist identisch mit dem Produkt der Teilchenflussdichte und der mittleren Teilchenenergie
total radiance
"Touch Thresholds" are thresholds for touch, vibration and other stimuli to the skin.
Touch Thresholds
number of all simultaneously occupied units in a particular group of units
Anzahl aller gleichzeitig belegten Einrichtungen in einer bestimmten Gruppe von einrichtungen
traffic intensity
relationship between rotational and longitudinal movements as a measure of how an angle is converted into a linear path
Zusammenhang zwischen Dreh- und Längsbewegung als Maß dafür, wie ein überstrichener Drehwinkel in eine lineare Wegstrecke umgesetzt wird
transmission ratio between rotation and translation
Transmittance is the fraction of incident light (electromagnetic radiation) at a specified wavelength that passes through a sample.
$\tau = \frac{\Phi_t}{\Phi_m}$, where $\Phi_t$ is the transmitted radiant flux or the transmitted luminous flux, and $\Phi_m$ is the radiant flux or luminous flux of the incident radiation.
Transmittance
$A_{10}(\lambda) = -lg(\tau(\lambda))$, where $\tau$ is the transmittance at a given wavelength $\lambda$.
Applicable units are those of quantitykind:TransmittanceDensity
Transmittance Density
True Exhaust Velocity
Turbidity is the cloudiness or haziness of a fluid, or of air, caused by individual particles (suspended solids) that are generally invisible to the naked eye, similar to smoke in air. Turbidity in open water is often caused by phytoplankton and the measurement of turbidity is a key test of water quality. The higher the turbidity, the higher the risk of the drinkers developing gastrointestinal diseases, especially for immune-compromised people, because contaminants like virus or bacteria can become attached to the suspended solid. The suspended solids interfere with water disinfection with chlorine because the particles act as shields for the virus and bacteria. Similarly suspended solids can protect bacteria from UV sterilisation of water. Fluids can contain suspended solid matter consisting of particles of many different sizes. While some suspended material will be large enough and heavy enough to settle rapidly to the bottom container if a liquid sample is left to stand (the settleable solids), very small particles will settle only very slowly or not at all if the sample is regularly agitated or the particles are colloidal. These small solid particles cause the liquid to appear turbid.
Applicable units are those of quantitykind:Turbidity
Turbidity
"Turns" is the number of turns in a winding.
Applicable units are those of quantitykind:Turns
Turns
unsteady rotation of a body resulting from an anxious distribution of mass, expressed as the product of radius and related mass
durch ungleichmäßige Masseverteilung bedingter, unruhiger Lauf rotierender Körper, ausgedrückt als Produkt aus dem Radius und einer zugehörigen Masse
Applicable units are those of quantitykind:Unbalance
unbalance
Placeholder value used for reference from units where it is not clear what a given unit is a measure of.
Applicable units are those of quantitykind:Unknown
Unknown
"Upper Critical Magnetic Flux Density" for type II superconductors, is the threshold magnetic flux density for disappearance of bulk superconductivity.
Upper Critical Magnetic Flux Density
Vacuum Thrust
The moisture transmission rate of a material is referred to as its "permeability".
Vapor Permeability
A material's "permeance", is dependent on thickness much like the R-value in heat transmission. Dividing the permeability of a material by its thickness gives the material's permeance. Permeance is the number that should be used to compare various products in regard to moisture transmission resistance.
Vapor Permeance
A pressure that is the one exerted by a substance vapor in thermodynamic equilibrium with either its solid or liquid phase at a given temperature in a closed system.
Applicable units are those of quantitykind:VaporPressure
Vapor Pressure
Applicable units are those of quantitykind:VapourPermeability
Vapour Permeability
Applicable units are those of quantitykind:VapourPermeance
Vapour Permeance
Vehicle Velocity
In kinematics, velocity is the speed of an object and a specification of its direction of motion. Speed describes only how fast an object is moving, whereas velocity gives both how fast and in what direction the object is moving.
Geschwindigkeit
Halaju
Rychlost
hitrost
hız
prędkość
velocidad
velocidade
velocitas
velocity
velocità
vitesse
viteză
Επιφάνεια
Ско́рость
מהירות
السرعة
سرعت/تندی
गति
速力
速度
rapidez
वेग
Ventilation Rate is often expressed by the volumetric flowrate of outdoor air introduced to a building. However, ASHRAE now recommends ventilation rates dependent upon floor area.
Applicable units are those of quantitykind:VentilationRatePerFloorArea
Ventilation Rate per Floor Area
The rate at which a body moves upwards at an angle of 90 degrees to the ground. It is the component of a projectile's velocity which is concerned with lifting the projectile.
Vertical Velocity
Frame rate (also known as frame frequency) is the frequency (rate) at which an imaging device produces unique consecutive images called frames. The term applies equally well to computer graphics, video cameras, film cameras, and motion capture systems. Frame rate is most often expressed in frames per second (FPS) and is also expressed in progressive scan monitors as hertz (Hz).
Applicable units are those of quantitykind:VideoFrameRate
Video Frame Rate
Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or extensional stress. In general terms it is the resistance of a liquid to flow, or its "thickness". Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. [Wikipedia]. In general conversation or in non-scientific contexts, if someone refers to the viscosity of a fluid, they're likely talking about its dynamic (or absolute) viscosity. However, in engineering or scientific contexts, it's essential to clarify which type of viscosity is being discussed, as the interpretation and use of the data may differ depending on whether one is talking about dynamic or kinematic viscosity.
Applicable units are those of quantitykind:Viscosity
Viscosity
"Visible Radiant Energy", also known as luminous energy, is the energy of electromagnetic waves. It is energy of the particles that are emitted, transferred, or received as radiation.
Visible Radiant Energy
"Vision Thresholds" is an abstract term to refer to a variety of measures for the thresholds of sensitivity of the eye.
"Vision Thresholds" is the thresholds of sensitivity of the eye.
Vision Thresholds
$\textit{Voltage}$, also referred to as $\textit{Electric Tension}$, is the difference between electrical potentials of two points. For an electric field within a medium, $U_{ab} = - \int_{r_a}^{r_b} E . {dr}$, where $E$ is electric field strength. For an irrotational electric field, the voltage is independent of the path between the two points $a$ and $b$.
$U_{ab} = V_a - V_b$, where $V_a$ and $V_b$ are electric potentials at points $a$ and $b$, respectively.
Voltage
"Voltage Phasor" is a representation of voltage as a sinusoidal integral quantity using a complex quantity whose argument is equal to the initial phase and whose modulus is equal to the root-mean-square value. A phasor is a constant complex number, usually expressed in exponential form, representing the complex amplitude (magnitude and phase) of a sinusoidal function of time. Phasors are used by electrical engineers to simplify computations involving sinusoids, where they can often reduce a differential equation problem to an algebraic one.
When $u = \hat{U} \cos{(\omega t + \alpha)}$, where $u$ is the voltage, $\omega$ is angular frequency, $t$ is time, and $\alpha$ is initial phase, then $\underline{U} = Ue^{ja}$.
Voltage Phasor
Applicable units are those of quantitykind:VoltageRatio
Voltage Ratio
The volume of a solid object is the three-dimensional concept of how much space it occupies, often quantified numerically. One-dimensional figures (such as lines) and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space.
Volume
volume density of the electric charge Q present in a volume V
räumliche Dichte der in einem Raumgebiet vom Volumen V enthaltenen elektrischen Ladung Q
volume density of charge
Volumetric Flow Rate, (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes through a given surface per unit time.
$q_V = \frac{dV}{dt}$, where $V$ is volume and $t$ is time.
Volume Flow Rate
Volume flow ratio is commonly used in fluid dynamics and engineering, referring to the ratio of the flow rates of two or more fluid streams within a system. In HVAC systems, the flow ratio could compare the amount of fresh air introduced to the amount of recirculated air.
Volume Flow Ratio
"Volume Fraction" is the volume of a constituent divided by the volume of all constituents of the mixture prior to mixing. Volume fraction is also called volume concentration in ideal solutions where the volumes of the constituents are additive (the volume of the solution is equal to the sum of the volumes of its ingredients).
$\varphi_B = \frac{x_B V_{m,B}^*}{\sum x_i V_{m,i}^*}$, where $V_{m,i}^*$ is the molar volume of the pure substances $i$ at the same temperature and pressure, $x_i$ denotes the amount-of-substance fraction of substance $i$, and $\sum$ denotes summation over all substances $i$.
Applicable units are those of quantitykind:VolumeFraction
Volume Fraction
domain completely enclosed by a surface, which can be determined for Cartesian coordinates by integration according to the following equation: V = ∫∫∫ dx dy dz or for a homogeneous material, it is the ratio of the moment of inertia and the distance to any point on the neutral axis at which the stress is to be calculated
der von einer Oberfläche eingeschlossene gesamte Rauminhalt, der für kartesische Koordinaten durch Integration nach folgender Gleichung ermittelt werden kann: V = ∫∫∫ dx dy dz oder bei einem homogenen Werkstoff Quotient Trägheitsmoment dividiert durch den Abstand zu einem Punkt auf der neutralen Achse, bei dem die Belastung berechnet werden soll
volume or section modulus
Applicable units are those of quantitykind:VolumePerArea
Volume per Unit Area
Applicable units are those of quantitykind:VolumePerTime
Volume per Time
Volume, or volumetric, Strain, or dilatation (the relative variation of the volume) is the trace of the tensor $\vartheta$.
$\vartheta = \frac{\Delta V}{V_0}$, where $\Delta V$ is the increase in volume and $V_0$ is the volume in a reference state to be specified.
Volume Strain
When the temperature of a substance changes, the energy that is stored in the intermolecular bonds between atoms changes. When the stored energy increases, so does the length of the molecular bonds. As a result, solids typically expand in response to heating and contract on cooling; this dimensional response to temperature change is expressed by its coefficient of thermal expansion. Different coefficients of thermal expansion can be defined for a substance depending on whether the expansion is measured by: * linear thermal expansion * area thermal expansion * volumetric thermal expansion These characteristics are closely related. The volumetric thermal expansion coefficient can be defined for both liquids and solids. The linear thermal expansion can only be defined for solids, and is common in engineering applications. Some substances expand when cooled, such as freezing water, so they have negative thermal expansion coefficients. [Wikipedia]
Applicable units are those of quantitykind:VolumeThermalExpansion
Volume Thermal Expansion
Applicable units are those of quantitykind:VolumetricBitDensity
quantity whose value is inversely proportional to the volume value
Größe, deren Wert sich umgekehrt proportional zum Volumenwert verhält
volumetric entity density
In fluid dynamics, the volumetric flux is the rate of volume flow across a unit area (m3·s−1·m−2).[Wikipedia]
Applicable units are those of quantitykind:VolumetricFlux
Volumetric Flux
$\textit{Volumetric Heat Capacity (VHC)}$, also termed $\textit{volume-specific heat capacity}$, describes the ability of a given volume of a substance to store internal energy while undergoing a given temperature change, but without undergoing a phase transition. It is different from specific heat capacity in that the VHC is a $\textit{per unit volume}$ measure of the relationship between thermal energy and temperature of a material, while the specific heat is a $\textit{per unit mass}$ measure (or occasionally per molar quantity of the material).
Applicable units are those of quantitykind:VolumetricHeatCapacity
Volumetric Heat Capacity
quantity proportional to the number of single particles of a defined type present in a given sample, divided by the related volume of this sample
Größe proportional der Anzahl von Einzelteilchen festgelegter Art, die in einer gegebenen Substanzprobe enthalten sind, dividiert durch das zugehörige Volumen dieser Substanzprobe
volumic amount of substance
amount of data, which is usually dependent on the respective complexity of the information or its coding procedure, divided by the related volume
Anzahl von Daten, die in der Regel abhängig von der jeweiligen Komplexität der Information oder deren Codierungsverfahren ist, dividiert durch das zugehörige Volumen
volumic data quantity
$\textit{Volumic Electromagnetic Energy}$, also known as the $\textit{Electromagnetic Energy Density}$, is the energy associated with an electromagnetic field, per unit volume of the field.
Applicable units are those of quantitykind:VolumicElectromagneticEnergy
Volumic Electromagnetic Energy
ratio released power divided by volume
Quotient freigesetzte Wärmeleistung durch Volumen
volumic output
In the simplest sense, vorticity is the tendency for elements of a fluid to "spin." More formally, vorticity can be related to the amount of "circulation" or "rotation" (or more strictly, the local angular rate of rotation) in a fluid. The average vorticity in a small region of fluid flow is equal to the circulation C around the boundary of the small region, divided by the area A of the small region. Mathematically, vorticity is a vector field and is defined as the curl of the velocity field.
Vorticity
"Warm Receptor Threshold" is the threshold of warm-sensitive free nerve-ending.
Warm Receptor Threshold
The "Warping Constant" is a measure for the warping constant or warping resistance of a cross section under torsional loading. It is usually measured in m⁶.
Applicable units are those of quantitykind:WarpingConstant
Warping Constant
The warping moment measure is a measure for the warping moment, which occurs in warping torsional analysis. It is usually measured in kNm².
Applicable units are those of quantitykind:WarpingMoment
Warping Moment
No pump can convert all of its mechanical power into water power. Mechanical power is lost in the pumping process due to friction losses and other physical losses. It is because of these losses that the horsepower going into the pump has to be greater than the water horsepower leaving the pump. The efficiency of any given pump is defined as the ratio of the water horsepower out of the pump compared to the mechanical horsepower into the pump.
Water Horsepower
Applicable units are those of quantitykind:WaterSolubility
The Water vapour diffusion coefficient describes how easy vapor diffusion happens in a given material.
Applicable units are those of quantitykind:WaterVaporDiffusionCoefficient
Wasserdampfdiffusionsleitkoeffizient
Water vapour diffusion coefficient
mass of water vapour passing a surface divided by the area of this surface, the pressure difference, and the corresponding time
Masse des durch eine Fläche hindurchtretenden Wasserdampfes, dividiert durch den Flächeninhalt dieser Fläche, die Druckdifferenz und die dazugehörige Zeit
water vapour permeability
For a monochromatic wave, "wavelength" is the distance between two successive points in a direction perpendicular to the wavefront where at a given instant the phase differs by $2\pi$. The wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats. The SI unit of wavelength is the meter.
$\lambda = \frac{c}{\nu}$, where $\lambda$ is the wave length, $\nu$ is the frequency, and $c$ is the speed of light in the medium.
Jarak gelombang
Vlnové délka
Wellenlänge
comprimento de onda
dalga boyu
longitud de onda
longueur d'onde
lunghezza d'onda
wavelength
длина волны
طول موج
波长
"Wavenumber" is the spatial frequency of a wave - the number of waves that exist over a specified distance. More formally, it is the reciprocal of the wavelength. It is also the magnitude of the wave vector. Light passing through different media keeps its frequency, but not its wavelength or wavenumber. The unit for wavenumber commonly used in spectroscopy is centimetre to power minus one, PER-CM, rather than metre to power minus one, PER-M.
$\sigma = \frac{\nu}{c}$, where $\sigma$ is the wave number, $\nu$ is the frequency, and $c$ is the speed of light in the medium. Or: $k = \frac{2\pi}{\lambda}= \frac{2\pi\upsilon}{\upsilon_p}=\frac{\omega}{\upsilon_p}$, where $\upsilon$ is the frequency of the wave, $\lambda$ is the wavelength, $\omega = 2\pi \upsilon$ is the angular frequency of the wave, and $\upsilon_p$ is the phase velocity of the wave.
Bilangan gelombang
Liczba falowa
Repetenz
Vlnové číslo
dalga sayısı
nombre d'onde
numero d'onda
número de ola
número de onda
valovno število
wavenumber
Волновое число
عدد الموجة
عدد موج
波数
Wellenzahl
Web Time
Web Time Average Pressure
Web Time Average Thrust
The force with which a body is attracted toward an astronomical body. Or, the product of the mass of a body and the acceleration acting on a body. In a dynamic situation, the weight can be a multiple of that under resting conditions. Weight also varies on other planets in accordance with their gravity.
Ağırlık
Berat
Gewicht
Siła ciężkości
forza peso
greutate
peso
poids
tíha
weight
Вес
وزن
重さ
重量
The temperature of a parcel of air cooled to saturation (100% relative humidity) by the evaporation of water into it, with the latent heat supplied by the parcel.
Wet Bulb Temperature
"Width" is the middle of three dimensions: length, width, thickness.
Width
$\textit{Work}$ or $net\ work$ is equal to the change in kinetic energy. This relationship is called the work-energy theorem: $$Wnet = K. E._f K. E._o $$ where $K. E._f$ is the final kinetic energy and $K. E._o$ is the original kinetic energy. Potential energy, also referred to as stored energy, is the ability of a system to do work due to its position or internal structure. Change in potential energy is equal to work. The potential energy equations can also be derived from the integral form of work: $$\Delta P. E. = W = \int F \cdot dx$$.
$A = \int Pdt$, where $P$ is power and $t$ is time.
A force is said to do Work when it acts on a body so that there is a displacement of the point of application, however small, in the direction of the force. The concepts of work and energy are closely tied to the concept of force because an applied force can do work on an object and cause a change in energy. Energy is defined as the ability to do work. Work is done on an object when an applied force moves it through a distance. Kinetic energy is the energy of an object in motion. The net work is equal to the change in kinetic energy.
Arbeit
delo
kerja
lavoro
lucru mecanic
praca
práce
trabajo
trabalho
travail
work
کار
कार्य
仕事量
"Work Function" is the energy difference between an electron at rest at infinity and an electron at a certain energy level. The minimum energy (usually measured in electronvolts) needed to remove an electron from a solid to a point immediately outside the solid surface (or energy needed to move an electron from the Fermi level into vacuum).
Work Function
All Values must have same DataType Shape
Data Item {$this} has type {?valueType}.
SELECT $this ?valueType WHERE { $this qudt:datatype/qudt:rdfsDatatype ?datatype . $this qudt:value ?valueList. ?valueList rdf:rest*/rdf:first ?value . BIND(datatype(?value) as ?valueType) . FILTER(?valueType != ?datatype) }
An rdf:List for a 2D array. For example "[[1,2], [3,4], [5,6]]"
An aspect is an abstract type class that defines properties that can be reused.
In computer science, the Boolean or logical data type is a data type, having two values (usually denoted true and false), intended to represent the truth values of logic and Boolean algebra. The Boolean data type is the primary result of conditional statements, which allow different actions and change control flow depending on whether a programmer-specified boolean condition evaluates to true or false.
The byte data type is an 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive). The byte data type can be useful for saving memory in large arrays, where the memory savings actually matters. They can also be used in place of int where their limits help to clarify your code; the fact that a variable's range is limited can serve as a form of documentation.
A big-endian machine stores the most significant byte first.
A bit field is a common idiom used in computer programming to store a set of Boolean datatype flags compactly, as a series of bits. The bit field is stored in an integral type of known, fixed bit-width. Each Boolean flag is stored in a separate bit. Usually the source code will define a set of constants, each a power of two, that semantically associate each individual bit with its respective Boolean flag. The bitwise operators and, or, and not are used in combination to set, reset and test the flags.
Alignment of a field at a byte boundary.
CDF (Common Data format), a data format for storing and manipulating scalar and multidimensional data in a platform and discipline independent manner, making interoperability between applications and tools easier. CDF provides device independent view of the CDF data model by software programming interface insulting developers from actual physical file format. CDF was developed by NASA, and is described at http://cdf.gsfc.nasa.gov/.
A set of numbers is called countably infinite if there is a way to enumerate them. Formally this is done with a bijection function that associates each number in the set with exactly one of the positive integers. The set of all fractions is also countably infinite. In other words, any set $X$ that has the same cardinality as the set of the natural numbers, or $| X | \; = \; | \mathbb N | \; = \; \aleph0$, is said to be a countably infinite set.
Any set $X$ with cardinality less than that of the natural numbers, or $$| X | \; < \; | \mathbb N | $$ is said to be a finite set.
Any set with cardinality greater than that of the natural numbers, or $$| X | \; > \; | \mathbb N | $$ For example $| R| \; = \; c \; > |\mathbb N |$, is said to be uncountable.
Checks for consistent dimension vectors for a QuantityKind and the Unit
s223: Inconsistent dimensionalities for a Quantity's Unit and Quantity Kind
SELECT $this WHERE { $this qudt:hasQuantityKind/qudt:hasDimensionVector ?qkdv1 . $this qudt:hasUnit/qudt:hasDimensionVector ?qkdv2 . FILTER (?qkdv1 != ?qkdv2) . }
Provides the date expressed in year, month and day. Expressed as "YYYY:MM:DD", where YYYY is a 4 digit year, MM is a 2 digit month and DD is a 2 digit day.
A time stamp encoded as a string 'YYYY-MM-DDThh:mm:ss[.dd]' or 'YYYY-DDDThh:mm:ss[.dd]', where 'YYYY' is the year, 'MM' is the two-digit month, 'DD' is the two-digit day, 'DDD' is the three digit day of year, 'T' is constant, 'hh:mm:ss[.dd]' is the UTC time in hours, minutes, seconds, and optional fractional seconds. As many 'd' characters to the right of the period as required may be used to obtain the required precision. All fields require leading zeros.
An rdf:List that can be used in property constraints as the type in an sh:or to indicate that all values of a property must be an xsd date type.
"{$this}" has {$actualDimensions} dimensions extent and needs to have {$specifiedDimensions}
SELECT $this $actualDimensions $specifiedDimensions WHERE { $this qudt:dimensionality $dimensionality . $this qudt:dimensions ?dimensions . ?dimensions rdf:rest*/rdf:first $specifiedDimensions . { SELECT $this (COUNT(?listValue )AS $actualDimensions) WHERE { $this qudt:value/rdf:rest*/rdf:first ?listValue . } GROUP BY $this } FILTER ($actualDimensions != $specifiedDimensions) }
Warning about use of a deprecated QUDT resource
Warns if a deprecated QUDT resource is used
Resource '{?s}' refers to deprecated resource '{$this}', which will be removed in the next major version of QUDT. {?replacementMessage}
SELECT ?s $this ?replacementMessage WHERE { $this qudt:deprecated true . ?s ?p $this . OPTIONAL { $this dcterms:isReplacedBy ?replacement . } BIND(IF( BOUND(?replacement), CONCAT("Please refer to ", STR(?replacement), " instead."), "Please do not refer to this resource any longer - it will be removed without replacement.") AS ?replacementMessage) }
Warning about use of a deprecated QUDT property
Warns if a deprecated QUDT property is used
Resource '{?s}' uses the deprecated property '{$this}', which will be removed in the next major version of QUDT.{?replacementMessage}
SELECT ?s $this ?replacementMessage WHERE { $this qudt:deprecated true . ?s $this ?o . OPTIONAL { $this dcterms:isReplacedBy ?replacement . } BIND(IF( BOUND(?replacement), CONCAT(" Please use ", STR(?replacement), " instead."), " Please do not use this property any longer - it will be removed without replacement.") AS ?replacementMessage) }
Earth centered earth mean equator and prime meridian coordinate system
Earth centered earth true equator and prime meridian of epoch coordinate system
Earth centered international celestial reference system
Earth centered international terrestrial reference system
Sun-Centered international celestial reference system
Sun Centered International Celestial Reference System
Vehicle centered international celestial reference system
A double precision floating point datatype. Numbers of this type are stored using 64 bits, they require more memory than numbers of type single, which use 32 bits. However, because they are stored with more bits, numbers of type double are represented to more precision than numbers of type single. The double-precision (or double) data type is represented according to IEEE Standard 754 for double precision. A value is formatted with bit-fields for sign, mantissa and exponent.
A single precision real is a 32 bit signed floating point representation. Numbers of type single are stored using 32 bits, they require less memory than numbers of type double, which use 64 bits. However, because they are stored with fewer bits, numbers of type single are represented to less precision than numbers of type double.
The IEEE-754 floating point datatype is a technical standard established in 1985 by the Institute of Electrical and Electronics Engineers (IEEE). Many hardware floating point units use the IEEE 754 standard.
Global Position Vector - double precision
The Hierarchical Data Format (HDF) is a common data format and a collection of application programming libraries developed at the NSCA primarily for the scientific community and for the exchange of scientific datasets. A commonly-used version of HDF is HDF5 which offers a simple data model and application interfaces for encoding and exchanging data without the added burden of defining mappings to the underlying machine representations.
IERS Conventions (2003), D. D. McCarthy and Gérard Petit (eds.), IERS Technical Note No. 32, 2004; http://www.iers.org/iers/publications/tn/tn32.
An Integer is an XML Schema Definition (XSD) datatype that represents arbitrary-precision whole numbers (positive, negative, or zero) without fractional or decimal components. It is derived from xsd:decimal by restricting values to integers only..
"Recent Gravity Models as a Result of the Lunar Prospector Mission", A. S. Konopliv, S. W. Asmar, E. Carranza, W. L. Sjogren, and D. N. Yuan, Academic Press, Icarus 150, 1-18 (2001).
Lunar mean earth body fixed Coordinate System
Lunar body-fixed coordinate frame aligned with the principal axes of the Moon.
Lunar principal axis body fixed Coordinate System
Lunar Principal Axis of Epoch Coordinate System
A type of string in which some characters may be wrapped with '$' and '$ characters for LaTeX rendering.
A little-endian machine stores the least significant byte first.
Mars mean equator and IAU-Node of epoch Coordinate System
Mars mean equator and prime meridian body-fixed Coordinate System
A Mass Properties Array holds, for an object, four values for the properties: Center of Gravity, Mass, Moment of Inertia, and Product of Inertia.
The International Terrestrial Reference Frame (ITRF) is realized by the locations of a set of points or stations on a tide-free Earth. As measurements and models have improved or changed, these locations have been changed also and the ITRF has moved slightly with respect to the physical Earth every few years.
The intersection of the prime meridian and the rotation equator of the Earth.
Completes a standard, right-handed coordinate frame.
Earth True Equator and Prime Meridian Body Fixed
The "Earth's True Equator and Prime Meridian of Epoch" refers to a coordinate system defined by Earth’s equator and prime meridian at a specific moment in time, called the “epoch.” This system is used as a reference in astronomy, geodesy, and celestial mechanics. The NASA Deep Space Network uses the Lieske precession model (1976).
The International Terrestrial Reference Frame as defined for 1993 (ITRF93), as located in the ICRF at the epoch given using a consistent set of precession, nutation, and timing and polar motion models.
The intersection of the prime meridian and the rotation equator of the Earth, in the ICRF and at the epoch given.
The rotation pole of the Earth, in the ICRF and at the epoch given.
Earth True Equator and Prime Meridian of Epoch
The International celestial reference frame (ICRF) is the best-determined and most stable reference frame and is the root frame. Other reference frames are often given with respect to the ICRF.
The International Celestial Reference Frame (ICRF) was defined in 1995 with locations given for 22 quasars and other bright radio objects. This definition was extended by the addition of more sources in 2000.
Defined as the cross product of the Z-axis (as defined above) and the Earth mean orbit pole of J2000 (i.e. the ecliptic pole of J2000). The X-axis of this coordinate frame is the Earth vernal equinox of J2000.
Defined as the pole vector of the Earth Mean Equator of J2000 (where J2000 = Julian date 2451545.0 TDB (Barycentric Dynamical Time)).
Points in the direction of the Moon’s prime meridian principal axis of Epoch (minimum moment of inertia).
Points in the direction of the Moon’s North pole principal axis of Epoch (maximum moment of inertia).
Finding the principal axes depends on solving for the dynamics of the Moon’s orientation, which must be done in conjunction with solving for its motion in space, though the Moon’s motion in space can also be solved for independently. The terms “north pole” and “prime meridian” are loosely used for the Z and X axes respectively of both this and the Lunar Mean Earth frames.
This frame is realized from the ICRF, precessed and rotated Relationships: according to the formulae in IAU2000, [Seidelmann2000]
Defined as the cross product of the ICRF Z-axis with the Z-axis (as defined above).
Defined as the pole vector of the Mars Mean Equator of Epoch.
The axis that is in the negative X direction.
The axis that is in the negative Y direction.
The axis that is in the negative Z direction.
NetCDF (network Common Data Form) is a set of interfaces for array-oriented data access and a freely-distributed collection of data access libraries for C, Fortran, C++, Java, and other languages. The netCDF libraries support a machine-independent format for representing scientific data. Together, the interfaces, libraries, and format support the creation, access, and sharing of scientific data.
An rdf:List that can be used in property constraints as value for sh:or to indicate that all values of a property must be a string, an integer, a float, a double or a decimal.
Pad with either a one or a zero. In other words, this is the "don't care" option.
A pointer is a programming language data type whose value refers directly to (or "points to") another value stored elsewhere in the computer memory using its address. It references a value stored elsewhere in memory, and obtaining or requesting the value to which a pointer refers is called dereferencing the pointer. A pointer is a simple implementation of the general reference data type. Pointers to data improve performance for repetitive operations such as traversing string and tree structures. While "pointer" has been used to refer to references in general, it more properly applies to data structures whose interface explicitly allows the pointer to be manipulated as a memory address.
The axis that is in the positive X direction.
The axis that is in the positive Y direction.
The axis that is in the positive Z direction.
Invalid quantity kinds list - TODO: SPARQL Query
This vector type is intended to hold the (real-valued) coefficients to a quaternion number. That is, if $V=[a,b,c,d]$ is a vector of type QUATERNION-VECTOR, then the proper interpretation of this vector is with respect to the basis elements $1,i,j,k$ of the quaternion algebra. Specifically, the V corresponds to the quaternion $v = a*1 + b*i + c*j + d*k$. Note that for most computations, the quaternion basis elements will be replaced with their 4 X 4 dimensional matrix representations, which are elements of type QuaternionBasisMatrix. In this case, the resulting quaternion will be a 4 X 4 dimensional matrix of the form: a b c d -b a -d c -c d a -b -d -c b a
A rational number can be expressed in the form m*b^e, where m (the mantissa), b (the base), and e (the exponent) are integers. In this case b is chosen to be 2, and then the values of m and e are determined given this choice of base.
A rational number can be expressed in the form m*b^e, where m (the mantissa), b (the base), and e (the exponent) are integers. In this case b is chosen to be 10, and then the values of m and e are determined given this choice of base.
A rotating reference frame is a coordinate system that rotates relative to an inertial (non-accelerating) reference frame. It is often used in physics, engineering, and mechanics to analyze motion from the perspective of an observer within the rotating frame. A rotating reference frame is non-inertial because it experiences angular acceleration or constant angular velocity relative to an inertial frame. This requires the inclusion of fictitious forces (e.g., centrifugal and Coriolis forces) when applying Newton's laws of motion. Earth can be treated as a rotating reference frame to account for the Coriolis effect, which affects weather patterns and ocean currents. Analysis of systems like rotating machinery, merry-go-rounds, or gyroscopes often involves rotating reference frames. In astronomy it is used to simplify calculations in celestial mechanics by considering rotating planetary orbits. To relate observations in the rotating frame to an inertial frame, one must account for the angular velocity vector and apply transformations like: $$\vec{F}{\text{inertial}} = \vec{F}{\text{rotating}} - 2m (\vec{\omega} \times \vec{v}) - m \vec{\omega} \times (\vec{\omega} \times \vec{r})$$ where $\vec{\omega}$ is the angular velocity, $\vec{v}$ is velocity in the rotating frame, and $\vec{r}$ is the position vector.
This frame is realized from the ICRF, precessed and rotated according to the formulae in IAU2000.
The intersection of the prime meridian and the rotation equator of the Earth, in the ICRF and as a function of time.
The mean rotation pole of the Earth, in the ICRF and as a function of time.
In this coordinate frame, the two collinear Lagrange points LL_1 and LL_2 (sometimes called Libration points) both lie along the positive X-axis approximately 60000 kilometers from the Moon. The LL_1 point lies on the X-axis between the Moon and the Earth and the LL_2 point lies on the X-axis on the other side of the Moon away from the Earth. See [Roncoli2005] for more information about Lagrange points.
Points in the direction of the vector from the Earth to the Moon.
Points in the direction of the instantaneous orbit normal of the Moon about the Earth.
The ICRF is the best-determined and most stable reference frame and is the “root” frame—other reference frames are often given with respect to the ICRF. The vehicle-centered, EME2000 coordinate system is useful for vehicle attitude determination since the positions of stars in star catalogs used with star trackers, and other celestial sensors are generally expressed using the EME2000 coordinate frame. However, caution must be exercised here since the EME2000 frames realized in the past by various star catalogs (such as FK5) and ephemerides (such as DE205) were actually slightly different frames, because estimates of the actual location EME2000 changed with improvements in models and new data. For this reason the ICRF is the recommended standard.
The International Celestial Reference Frame (ICRF) was defined in 1995 with locations given for 22 quasars and other bright radio objects. This definition was extended by the addition of more sources in 2000. See Reference 8 for further information.
At current levels of accuracy and precision the location of the ITRF at any point in time with respect to the ICRF cannot be predicted because the Earth (and its weather!) are not modeled that accurately. The location of the true pole depends on modeling precession and nutation and then measuring the actual rotation pole relative to the modeled pole with respect to both the ITRF and the ICRF. One can use either the NASA Deep Space Network’s models and file of pole locations, which also includes timing information to tell where the prime meridian was OR one can use the IERS models and file of pole locations and timing called the Earth Orientation Parameters (EOP) file BUT NOT BOTH, e.g., do not use the IERS EOP with the DSN models for precession and nutation. The IERS information is more publicly available and is recommended. See Reference 8 for more information, including the relationships between the various ITRF frames.
The International Terrestrial Reference Frame (ITRF) is realized by the locations of a set of points or stations on a tide-free Earth. As measurements and models have improved or changed, these locations have been changed also and the ITRF has moved slightly with respect to the physical Earth every few years; ITRF93 is recommended.
International Terrestrial Reference Frame
Lunar body-fixed coordinate frame aligned with the rotation axis of the Moon. The location of the LMEBF is a fixed rotation from the LPABF given in [Williams96] as: “The three rotations (in arcseconds) from Principal (P) to Mean (M) axes are: M = R_1(-0.15') R_2(-79.12') R_3(-66.48') P." Historical data and surface maps are given in this frame.
This is realized by the locations of the three Apollo and one Lunar laser ranging retroreflectors
Points in the direction of the Moon’s historical prime meridian (mean direction toward Earth).
Points in the direction of the Moon’s North rotation pole (mean rotation axis).
Reference: “Lunar moments, tides, orientation, and coordinate frames,” J. G. Williams, X. X. Newhall, and J. O. Dickey, Planet. Space Sci. 44:1077-1080, 1996.
Lunar body-fixed coordinate frame aligned with the principal axes of the Moon. The location of the LPABF in the ICRF should be solved for in conjunction with solving for the Moon’s motion in space. Lunar gravity fields are defined in this frame. Finding the principal axes depends on solving for the dynamics of the Moon's orientation, which must be done in conjunction with solving for its motion in space, though the Moon's motion in space can also be solved for independently. The terms “north pole” and “prime meridian” are loosely used for the Z and X axes respectively of both this and the Lunar Mean Earth frames.
Points in the direction of the Moon's prime meridian principal axis (minimum moment of inertia).
Points in the direction of the Moon's North pole principal axis (maximum moment of inertia).
Since this coordinate system is non-Euclidean, the axes are not defined by vectors but are lines and circles in space through an origin at a vehicle in orbit around a central body.
Defined by the position and velocity vectors associated with a vehicle and thus directly related to the coordinate system in which those vectors are expressed.
Defined as the circle that intersects the vehicle center-of-mass, is centered on the central body center, and lies in the vehicle orbit plane, positive in the direction of motion.
Defined as the distance on C between the radial projection of P onto C and the Y-axis; this is taken to be positive if P is on the same side from the Y-Z plane as the vehicle velocity vector points and negative otherwise. Equivalently, if we let θ be the centralbody-centered angle from the vehicle to the projection of P onto the orbit plane (measured positively in a right-handed sense with respect to the vehicle orbit angular momentum), then the xcoordinate of the point is θ (in radians) times the radius of the vehicle. Note that the LVC x-coordinate is arbitrary for P located on N.
Defined as the line that intersects the vehicle center-of-mass and is normal to the vehicle orbit plane, positive opposite the direction of the orbit angular momentum vector (thus completing a right-handed coordinate system).
Defined as the distance from the orbit plane, positive on the side opposite the angular momentum direction.
Defined as the line through the vehicle center-of-mass and the central body center, positive toward the central body center.
Defined as the distance from the central body center to the vehicle center-of-mass minus the distance between P and N; equivalently, the radius of C minus the radius of the projection of P onto the vehicle orbit plane.
Defined by the position and velocity vectors associated with a Relationships: vehicle and thus directly related to the coordinate system in which those vectors are expressed.
Completes a standard, right-handed coordinate frame and is positive in the direction of vehicle motion.
Defined as a line that lies along the radius vector from the central body center to the vehicle center-of-mass and is positive toward the central body center.
Mars body-fixed coordinate frame with the Mars North pole and prime meridian directions defined by the IAU/IAG [@Seidelmann:2000].
Mars Mean Equator and Prime Meridian Body-Fixed
In this coordinate frame, the two collinear Lagrange points EL_1 and EL_2 (sometimes called Libration points) both lie along the positive X-axis approximately 1.5 million kilometers from the Earth. The EL_1 point lies on the X-axis between the Earth and the Sun and the EL_2 point lies on the X-axis on the other side of the Earth away from the Sun. See [Roncoli2005] for more information about Lagrange points.
Points in the direction of the vector from the Sun to the Earth.
Points in the direction of the instantaneous orbit normal of the Earth about the Sun.
"Lunar Constants and Models Document”, R. Roncoli, JPL D-32296, September 23, 2005, http://ssd.jpl.nasa.gov/?lunar_doc.
The Signed Big Integer, (long in Java) data type is a 64-bit signed two's complement integer. It has a minimum value of -9,223,372,036,854,775,808 and a maximum value of 9,223,372,036,854,775,807 (inclusive). Use this data type when you need a range of values wider than those provided by int.
A Signed Integer or 'short' data type is a 16-bit signed two's complement integer. It has a minimum value of -32,768 and a maximum (inclusive) value of 32,767. As with byte, the same guidelines apply: you can use a short to save memory in large arrays, in situations where the memory savings actually matters.
A Signed Long Integer is a 32 bit signed integer in 2's complement form. It has a minimum value of -2,147,483,648 and a maximum value of 2,147,483,647 (inclusive). For integral values, this data type is generally the default choice unless there is a reason (like the above) to choose something else. This data type will most likely be large enough for the numbers a program will use. If a wider range of values is needed use long instead.
A String is an ordered list of characters. Typically the characters are UTF-8 characters.
“Report of the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements of the Planets and Satellites: 2000”, P.K. Seidelmann, V. K. Abalakin, M. Bursa, M. E. Davies, C. DeBergh, J. H. Lieske, J. Oberst, J. L. Simon, E. M. Standish, P. Stooke, and P. C. Thomas, Celestial Mechanics and Dynamical Astronomy 82: 83-110, 2002 (http://springerlink.metapress.com, follow the links from “Browse by Online Libraries (subject areas)”, then “Physics and Astronomy”, then “Celestial Mechanics and Dynamical Astronomy”, then “Volume 82 - Number 1/January 2002”, then follow the links to download the paper.
Parameter is modifiable by a (computer) system.
Earth-Centered Earth-Moon Rotating Coordinate System
Earth-Centered Sun Earth Rotating Coordinate System
Moon-Centered Earth-Moon Rotating Coordinate System
Sun-Centered Sun Earth Rotating Coordinate System
An rdf:List that can be used in property constraints as value for sh:or to indicate that all values of a property must be a plain string, a string with HTML markup, or a string with LaTeX markup.
Lexical pattern for the case-sensitive version of UCUM code
This type identifies functions that have exactly one argument.
An unsigned 16-bit integer in the range 0 to 65,535
UTC is the time-scale maintained by the BIPM, with assistance from the IERS, which forms the basis of a coordinated dissemination of standard frequencies and time signals. It corresponds exactly in rate with the international reference scale of atomic time (TAI) but differs from it by an integer number of seconds. TAI, based on the second (SI), as realized on the rotating geoid, is formed by the BIPM on the basis of clock data supplied by cooperating establishments. It is in the form of a continuous scale, e.g. in days, hours, minutes and seconds from the origin 1 January, 1958 (adopted by the CGPM 1971). UTC date times are expressed as "YYYY-MM-DDThh:mm:ss[.dd]"" or "YYYY-DDDThh:mm:ss[.dd]"", where 'YYYY' is the year, 'MM' is the two-digit month, 'DD' is the two-digit day, 'DDD' is the three digit day of year, 'T' is constant, 'hh:mm:ss[.dd]' is the UTC time in hours, minutes, seconds, and optional fractional seconds. As many 'd' characters to the right of the period as required may be used to obtain the required precision. All fields require leading zeros."
UTC day time is expressed as "YYYY-DDDThh:mm:ss.ddZ", where each character is an ASCII character using one octet with the following meanings: YYYY = Year in four-character subfield with values 0001-9999, DDD = Day of year in three-character subfield with values 001-365 or -366, T = Calendar-Time separator, hh = Hour in two-character subfield with values 00-23, mm = Minute in two-character subfield with values 00-59, ss = Second in two-character subfield with values 00-59 (-58 or -60 during leap seconds), dd = Decimal fraction of second in one- to n-character subfield, each d has values 0-9, and Z = time code terminator (optional)"
YYYY-DDDThh:mm:ss.ddZ, where each character is an ASCII character using one octet with the following meanings: YYYY = Year in four-character subfield with values 0001-9999, DDD = Day of year in three-character subfield with values 001-365 or -366, T = Calendar-Time separator, hh = Hour in two-character subfield with values 00-23, mm = Minute in two-character subfield with values 00-59, ss = Second in two-character subfield with values 00-59 (-58 or -60 during leap seconds), dd = Decimal fraction of second in one- to n-character subfield, each d has values 0-9, and Z = time code terminator (optional)
Vehicle centered local vertical curvilinear coordinate system
Local vertical local horizontal coordinate system
Specifies and checks an optional property for a quantified value.
SELECT $this WHERE { $this qudt:quantity ?quantity . FILTER NOT EXISTS {?quantity qudt:hasUnit ?unit} }
An aspect class that holds properties that provide external knowledge and specifications of a given resource.
Alignment of a field at a word boundary, that is 2 bytes.
In XML Schema Definition (XSD) xsd:anySimpleType is the base type for all simple types. Simple types in XSD represent atomic values without any child elements or complex structures. All simple types are compliant with xsd:anySimpleType. In XSD, the atomic types are: xsd:string, xsd:boolean, xsd:decimal, xsd:float, xsd:double, xsd:duration, xsd:dateTime, xsd:time, xsd:date, xsd:gYearMonth, xsd:gYear, xsd:gMonthDay, xsd:gDay, xsd:gMonth, xsd:hexBinary, xsd:base64Binary, xsd:anyURI, xsd:QName, and xsd:NOTATION.
The electromagnetic system of units is used to measure electrical quantities of electric charge, current, and voltage, within the centimeter gram second (or "CGS") metric system of units. In electromagnetic units, electric current is derived the CGS base units length, mass, and time by solving Ampere's Law (expressing the force between two parallel conducting wires) for current and setting the constant of proportionality (k_m) equal to unity. Thus, in the CGS-EMU system, electric current is derived from length, mass, and time.
The electrostatic system of units is used to measure electrical quantities of electric charge, current, and voltage within the centimeter gram second (or "CGS") metric system of units. In electrostatic units, electric charge is derived from Coulomb's Law (expressing the force exerted between two charged particles separated by a distance) by solving for electric charge and setting the constant of proportionality (k_s) equal to unity. Thus, in electrostatic units, the dimensionality of electric charge is derived from the base CGS quantities of length, mass, and time.
The ISO 80000 standards were prepared by Technical Committee ISO/TC 12, Quantities and units in co-operation with IEC/TC 25, Quantities and units.
The astronomical system of units, formally called the IAU (1976) System of Astronomical Constants, is a system of measurement developed for use in astronomy. It was adopted by the International Astronomical Union (IAU) in 1976, and has been slightly updated since then. The system was developed because of the difficulties in measuring and expressing astronomical data in International System of Units (SI units). In particular, there is a huge quantity of very precise data relating to the positions of objects within the solar system which cannot conveniently be expressed or processed in SI units. Through a number of modifications, the astronomical system of units now explicitly recognizes the consequences of general relativity, which is a necessary addition to the International System of Units in order to accurately treat astronomical data. The astronomical system of units is a tridimensional system, in that it defines units of length, mass and time. The associated astronomical constants also fix the different frames of reference that are needed to report observations. The system is a conventional system, in that neither the unit of length nor the unit of mass are true physical constants, and there are at least three different measures of time.
Astronomic System Of Units
The centimetre-gram-second system (abbreviated CGS or cgs) is a variant of the metric system of physical units based on centimetre as the unit of length, gram as a unit of mass, and second as a unit of time. All CGS mechanical units are unambiguously derived from these three base units, but there are several different ways of extending the CGS system to cover electromagnetism. The CGS system has been largely supplanted by the MKS system, based on metre, kilogram, and second. Note that the term cgs is ambiguous, since there are several variants with conflicting definitions of electromagnetic quantities and units. The unqualified term is generally associated with the Gaussian system of units, so this more precise URI is preferred.
CGS System of Units
The units in this system are formed in a manner similar to that of the cgs electrostatic system of units: the unit of electric current was defined using the law that describes the force between current-carrying wires. To do this, the permeability of free space (the magnetic constant, relating the magnetic flux density in a vacuum to the strength of the external magnetic field), was set at 1. To distinguish cgs electromagnetic units from units in the international system, they were often given the prefix “ab-”. However, most are often referred to purely descriptively as the 'e.m. unit of capacitance', etc.
CGS System of Units - EMU
The electrostatic system of units is a system of units used to measure electrical quantities of electric charge, current, and voltage, within the centimeter gram second (or "CGS") metric system of units. In electrostatic units, electrical charge is defined via the force it exerts on other charges. The various units of the e.s.u. system have specific names obtained by prefixing more familiar names with $stat$, but are often referred to purely descriptively as the 'e.s. unit of capacitance', etc.
CGS System of Units ESU
Gaussian units constitute a metric system of physical units. This system is the most common of the several electromagnetic unit systems based on cgs (centimetre–gram–second) units. It is also called the Gaussian unit system, Gaussian-cgs units, or often just cgs units. The term "cgs units" is ambiguous and therefore to be avoided if possible: there are several variants of cgs with conflicting definitions of electromagnetic quantities and units. [Wikipedia]
CGS System of Units - Gaussian
A system of units formerly widely used in the UK and the rest of the English-speaking world. It includes the pound (lb), quarter (qt), hundredweight (cwt), and ton (ton); the foot (ft), yard (yd), and mile (mi); and the gallon (gal), British thermal unit (btu), etc. These units have been largely replaced by metric units, although Imperial units persist in some contexts. In January 2000 an EU regulation outlawing the sale of goods in Imperial measures was adopted into British law; an exception was made for the sale of beer and milk in pints.
Imperial System of Units
In physics, Planck units are physical units of measurement defined exclusively in terms of five universal physical constants listed below, in such a manner that these five physical constants take on the numerical value of 1 when expressed in terms of these units. Planck units elegantly simplify particular algebraic expressions appearing in physical law. Originally proposed in 1899 by German physicist Max Planck, these units are also known as natural units because the origin of their definition comes only from properties of nature and not from any human construct. Planck units are unique among systems of natural units, because they are not defined in terms of properties of any prototype, physical object, or even elementary particle. Unlike the meter and second, which exist as fundamental units in the SI system for (human) historical reasons, the Planck length and Planck time are conceptually linked at a fundamental physical level. Natural units help physicists to reframe questions.
Planck System of Units
The International System of Units (abbreviated $SI$ from French: Système international d'unités) is the modern form of the metric system and is generally a system of units of measurement devised around seven base units and the convenience of the number ten. The older metric system included several groups of units. The SI was established in 1960, based on the metre-kilogram-second system, rather than the centimetre-gram-second system, which, in turn, had a few variants.
International System of Units
This placeholder system of units is for all units that do not fit will into any other system of units as modeled here.
Unstated System Of Units
United States customary units are a system of measurements commonly used in the United States. Many U.S. units are virtually identical to their imperial counterparts, but the U.S. customary system developed from English units used in the British Empire before the system of imperial units was standardized in 1824. Several numerical differences from the imperial system are present. The vast majority of U.S. customary units have been defined in terms of the meter and the kilogram since the Mendenhall Order of 1893 (and, in practice, for many years before that date). These definitions were refined in 1959. The United States is the only industrialized nation that does not mainly use the metric system in its commercial and standards activities, although the International System of Units (SI, often referred to as "metric") is commonly used in the U.S. Armed Forces, in fields relating to science, and increasingly in medicine, aviation, and government as well as various sectors of industry. [Wikipedia]
US Customary Unit System
$\textit{Ampere}$, often shortened to $\text{amp}$, is the SI unit of electric current and is one of the seven SI base units defined as: $$\text{A} \equiv \frac{\textit{C}}{\textit{s}} \equiv \frac{\textit{coulomb}}{\textit{second}} \equiv \frac{\text{joule}}{\text{weber}}$$ Note that SI supports only the use of symbols and deprecates the use of any abbreviations for units.
Amper
Ampere
Amperio
Amperium
Ampère
Ampér
Αμπέρ
Ампер
אמפר
آمپر
أمبير
एम्पीयर
アンペア
安培
$\textit{Ampere Hour}$ is a practical unit of electric charge equal to the charge flowing in one hour through a conductor passing one ampere. An ampere-hour or amp-hour (symbol $Ah,\,AHr,\, A \cdot h, A h$) is a unit of electric charge, with sub-units milliampere-hour ($mAh$) and milliampere second ($mAs$). One ampere-hour is equal to 3600 coulombs (ampere-seconds), the electric charge transferred by a steady current of one ampere for one hour. The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries. The commonly seen milliampere-hour ($mAh$ or $mA \cdot h$) is one-thousandth of an ampere-hour ($3.6 \,coulombs$).
Ampere Hour
$\textit{Ampere Hour per Degree Celsius}$ is the product of the SI base unit ampere and the unit hour divided by the unit degree Celsius.
$\textit{Ampere Hour per Cubic Decimetre}$ is the product of the SI base unit ampere and the unit hour divided by 0.001-fold of the power of the SI base unit metre with the exponent 3.
product of the SI base unit ampere and the unit hour divided by the SI base unit kilogram
product of the SI base unit ampere and the unit hour divided by the power of the SI base unit metre with the exponent 2
product of the SI base unit ampere and the unit hour divided by the power of the SI base unit metre with the exponent 3
Ampere Square Meter
Ampere Square Metre
Ampere Square Meter per Joule Second
Ampere Square Metre per Joule Second
product of the SI base unit ampere and the unit minute
SI base unit ampere divided by the SI base unit ampere and the unit hour
SI base unit ampere divided by the 0.01-fold of the SI base unit metre
Ampere per CentiMeter
Ampere per CentiMetre
SI base unit ampere divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Ampere per Square CentiMeter
Ampere per Square CentiMetre
A measure used to express how a current is subject to temperature. Originally used in Wien's Law to describe phenomena related to filaments. One use today is to express how a current generator derates with temperature.
Ampere per Degree Celsius
$\textit{Ampere per gram}$ is a practical unit to describe an (applied) current relative to the involved amount of material. This unit is often found in electrochemistry to standardize test conditions and compare various scales of investigated materials.
Ampere per Gram
$\textit{Ampere per Joule}$ is the inverse measure of $joule-per-ampere$ or $weber$. The measure for the reciprical of magnetic flux.
Ampere per Joule
SI base unit ampere divided by the SI base unit kelvin
SI base unit ampere divided by the SI base unit kilogram
is the SI unit of magnetic field strength. One ampere per meter is equal to $\pi/250$ oersteds ($12.566\, 371\,millioersteds$) in CGS units. The ampere per meter is also the SI unit of "magnetization" in the sense of magnetic dipole moment per unit volume; in this context $1 A/m = 0.001\,emu\,per\,cubic\,centimeter$.
Amper Bölü Metre
Amper Na Meter
Amper Na Metr
Ampere Al Metro
Ampere Je Meter
Ampere Pe Metru
Ampere Por Metro
Ampere per Meter
Ampere per Metre
Amperio Por Metro
Ampère Par Mètre
Ampérů Na Metr
Ампер На Метр
آمپر بر متر
مقياس التبادل، الأس السالب للمتر
प्रति मीटर एम्पीयर
アンペア毎メートル
安培每米
$\textit{Ampere Per Square Meter}$ is a unit in the category of electric current density. This unit is commonly used in the SI unit system.
Amper Bölü Metre Kare
Amper Na Kvadratni Meter
Amper Na Metr Kwadratowy
Ampere Al Metro Quadrato
Ampere Je Quadratmeter
Ampere Pe Metru Pătrat
Ampere Por Metro Quadrado
Ampere per Meter Persegi
Ampere per Square Meter
Ampere per Square Metre
Amperio Por Metro Cuadrado
Ampère Par Mètre Carré
Ampér Na Metr Čtvereční
Ампер На Квадратный Метр
آمپر بر مترمربع
أمبير في المتر المربع
एम्पीयर प्रति वर्ग मीटर
アンペア毎平方メートル
安培每平方米
Ampere per Square Meter Square Kelvin
Ampere per Square Metre Square Kelvin
SI base unit ampere divided by the 0.001-fold of the SI base unit metre
Ampere per MilliMeter
Ampere per MilliMetre
SI base unit ampere divided by the 0.000 001-fold of the power of the SI base unit metre by exponent 2
Ampere per Square MilliMeter
Ampere per Square MilliMetre
SI base unit ampere divided by the SI derived unit pascal
$\textit{Ampere per Radian}$ is a derived unit for measuring the amount of current per unit measure of angle, expressed in ampere per radian.
Ampere per Radian
product out of the SI base unit ampere and the SI base unit second
Ampere Second
product out of the power of the SI base unit ampere and the SI base unit second with the exponent 2
product out of the power of the SI base unit ampere with the exponent 2 and the SI base unit second
The acre is a unit of area in a number of different systems, including the imperial and U.S. customary systems. Its international symbol is ac. The most commonly used acres today are the international acre and, in the United States, the survey acre. The most common use of the acre is to measure tracts of land. One international acre is equal to 4046.8564224 square metres.
Acre
An acre-foot is a unit of volume commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, and river flows. It is defined by the volume of one acre of surface area to a depth of one foot. Since the acre is defined as a chain by a furlong ($66 ft \times 660 ft$) the acre-foot is exactly $43,560 cubic feet$. For irrigation water, the volume of $1 ft \times 1 \; ac = 43,560 \; ft^{3} (1,233.482 \; m^{3}, 325,851 \; US gal)$.
Acre Foot
unit of the volume, which is used in the United States to measure/gauge the capacity of reservoirs
The $\textit{Unified Atomic Mass Unit}$ (symbol: $\mu$) or $\textit{dalton}$ (symbol: Da) is a unit that is used for indicating mass on an atomic or molecular scale. It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state, and has a value of $1.660538782(83) \times 10^{-27} kg$. One $Da$ is approximately equal to the mass of one proton or one neutron. The CIPM have categorised it as a $\textit{"non-SI unit whose values in SI units must be obtained experimentally"}$.
Atomic Mass Unit
The $Angstr\ddot{o}m$ is an internationally recognized unit of length equal to $0.1 \,nanometre$ or $1 \times 10^{-10}\,metres$. Although accepted for use, it is not formally defined within the International System of Units(SI). The angstrom is often used in the natural sciences to express the sizes of atoms, lengths of chemical bonds and the wavelengths of electromagnetic radiation, and in technology for the dimensions of parts of integrated circuits. It is also commonly used in structural biology.
Angstrom
A unit that is a non-SI unit, specifically a CGS unit, of polarizability known informally as polarizability volume. The SI defined units for polarizability are C*m^2/V and can be converted to $Angstr\ddot{o}m$^3 by multiplying the SI value by 4 times pi times the vacuum permittivity and then converting the resulting m^3 to $Angstr\ddot{o}m$^3 through the SI base 10 conversion (multiplying by 10^-30).
Cubic Angstrom
A minute of arc, arcminute, or minute arc (MOA), is a unit of angular measurement equal to one sixtieth (1/60) of one degree (circle/21,600), or $\pi /10,800 radians$. In turn, a second of arc or arcsecond is one sixtieth (1/60) of one minute of arc. Since one degree is defined as one three hundred and sixtieth (1/360) of a rotation, one minute of arc is 1/21,600 of a rotation.
Arcminute
"Arc Second" is a unit of angular measure, also called the $\textit{second of arc}$, equal to $1/60 \; arcminute$. One arcsecond is a very small angle: there are 1,296,000 in a circle. The SI recommends $\textit{double prime}$ ($''$) as the symbol for the arcsecond. The symbol has become common in astronomy, where very small angles are stated in milliarcseconds ($mas$).
Arcsecond
An 'are' is a unit of area equal to 0.02471 acre and 100 centare.
Are
The $\textit{ampere-turn}$ was the MKS unit of magnetomotive force (MMF), represented by a direct current of one ampere flowing in a single-turn loop in a vacuum. "Turns" refers to the winding number of an electrical conductor comprising an inductor. The ampere-turn was replaced by the SI unit, $ampere$.
Ampere Turn
The $\textit{Ampere Turn per Inch}$ is a measure of magnetic field intensity and is equal to 12.5664 Oersted.
Ampere Turn per Inch
The $\textit{Ampere Turn per Metre}$ is the SI unit of magnetic field strength. One ampere per meter is equal to $\pi/250$ oersteds (12.566 371 millioersteds) in CGS units. The ampere per meter is also the SI unit of "magnetization" in the sense of magnetic dipole moment per unit volume; in this context $1 A/m = 0.001 emu per cubic centimeter$.
Ampere Turn per Meter
Ampere Turn per Metre
The unit for $\textit{Standard Atmosphere}$, symbol: $atm$, is an international reference pressure defined as $101.325 \,kPa$ and formerly used as unit of pressure. For practical purposes it has been replaced by the bar which is $100 kPa$. The difference of about 1% is not significant for many applications, and is within the error range of common pressure gauges.
Standard Atmosphere
The unit $\textit{Atmosphere Cubic Metre per Mole}$ consists of the power of the SI base unit metre with the exponent 3 multiplied by the unit atmosphere divided by the SI base unit mol.
Atmosphere Cubic Meter per Mole
Atmosphere Cubic Metre per Mole
An [outdated] unit of the pressure divided by the SI base unit metre
The unit for $\textit{Technical Atmosphere}$, symbol: $at$, is a non-SI unit of pressure equal to one kilogram-force per square centimeter. The symbol $at$ clashes with that of the katal (symbol: $kat$), the SI unit of catalytic activity; a kilotechnical atmosphere would have the symbol $kat$, indistinguishable from the symbol for katal. It also clashes with that of the non-SI unit, the $attotonne$, but that unit would be more likely be rendered as the equivalent SI unit. Assay ton (abbreviation $AT$) is not a unit of measurement, but a standard quantity used in assaying ores of precious metals; it is $29 1D6 \,grams$ (short assay ton) or $32 2D3 \,grams$ (long assay ton), the amount which bears the same ratio to a milligram as a short or long ton bears to a troy ounce. In other words, the number of milligrams of a particular metal found in a sample of this size gives the number of troy ounces contained in a short or long ton of ore.
$1 at = 98.0665 kPa \approx 0.96784 standard atmospheres$
Technical Atmosphere
The unit $\textit{technical atmosphere per metre}$ is the pressure which is generated by a 10 metre water column divided by the SI base unit metre.
An $\textit{astronomical unit}$, abbreviated as $AU$, $au$, $a.u.$, or $ua$ is a unit of length equal to $149,597,870,700\, metres$ ($92,955,807.273\, mi$) or approximately the mean Earth Sun distance.
An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to 149,597,870,700 metres (92,955,807.273 mi) or approximately the mean Earth Sun distance. The symbol ua is recommended by the International Bureau of Weights and Measures, and the international standard ISO 80000, while au is recommended by the International Astronomical Union, and is more common in Anglosphere countries. In general, the International System of Units only uses capital letters for the symbols of units which are named after individual scientists, while au or a.u. can also mean atomic unit or even arbitrary unit. However, the use of AU to refer to the astronomical unit is widespread. The astronomical constant whose value is one astronomical unit is referred to as unit distance and is given the symbol A. [Wikipedia]
Astronomical-unit
The unit for $\textit{American Wire Gage}$, symbol $AWG$, is for the standard nominal diameters and cross-sectional areas of American Wire Gage sizes of solid round wires used as electrical conductors.
The $\textit{Abampere (aA)}$, also called the $biot$ after Jean-Baptiste Biot, is the basic electromagnetic unit of electric current in the emu-cgs system of units (electromagnetic cgs). One $abampere$ is equal to ten amperes in the SI system of units. An $abampere$ is the constant current that produces, when maintained in two parallel conductors of negligible circular section and of infinite length placed 1 centimetre apart, a force of 2 dynes per centimetre between the two conductors.
The Abampere (aA), also called the biot after Jean-Baptiste Biot, is the basic electromagnetic unit of electric current in the emu-cgs system of units (electromagnetic cgs). One abampere is equal to ten amperes in the SI system of units. An abampere is the constant current that produces, when maintained in two parallel conductors of negligible circular section and of infinite length placed 1 centimetre apart, a force of 2 dynes per centimetre between the two conductors.
Abampere
The unit $\textit{Abampere Square Centimeter}$ is the unit of magnetic moment in the electromagnetic centimeter-gram-second system.
Abampere Square CentiMeter
Abampere Square CentiMetre
The unit $\textit{Abampere Per Square Centimeter}$, symbol $aA/cm^2$, is a unit in the category of Electric current density. It is also known as $\textit{abamperes per square centimeter}$, $\textit{abampere/square centimeter}$, and $\textit{abampere per square centimetre}$. This unit is commonly used in the cgs unit system. $\textit{Abampere Per Square Centimeter}$ has a dimension of $L^{-2}I$ where $L$ is length, and $I$ is electric current. It can be converted to the corresponding standard SI unit $A/m^{2}$ by multiplying its value by a factor of 100000.
Abampere per Square CentiMeter
Abampere per Square CentiMetre
The unit $\textit{Statampere}$, symbol $statA$ is a unit in the category of Electric current. It is also known as statamperes. This unit is commonly used in the cgs unit system. $\textit{Statampere (statA)}$ has a dimension of $I$ where $I$ is electric current. It can be converted to the corresponding standard SI unit $A$ by multiplying its value by a factor of 3.355641E-010.
Statampere
The $\textit{Statampere per Square Centimeter}$ is a unit of electric current density in the c.g.s. system of units.
Statampere per Square CentiMeter
Statampere per Square CentiMetre
An $\textit{AttoAmpere}$ is 0.000000000000000001-fold of the unit ampere
An $\textit{AttoColomb}$ is $10^{-18} C$, where $C$ is the unit for $Colomb$.
AttoCoulomb
The $\textit{AttoFarad}$ is 0,000 000 000 000 000 001-fold of the SI derived unit $farad$.
0.000000000000000001-fold of the SI derived unit farad
AttoFarad
The $\textit{AttoJoule}$ is 0,000 000 000 000 000 001-fold of the derived SI unit $joule$.
0.000000000000000001-fold of the derived SI unit joule
AttoJoule
The $\textit{AttoJoule Second}$ is the unit for the Planck's constant as product of the SI derived unit joule and the SI base unit second.
unit of the Planck's constant as product of the SI derived unit joule and the SI base unit second
AttoJoule Second
An $\textit{AttoSecond}$ is 0.000000000000000001-fold of the SI base unit $second$.
0.000000000000000001-fold of the SI base unit second
AttoSecond
The $\textit{Bel}$ is a logarithmic unit of sound pressure equal to 10 decibels (dB). It is defined as: $1 B = (1/2) \log_{10}(Np)$
Bel
Belio
Μπέλ
Бел
बेल
ベル
The $\textit{Bel}$ is the unit $\textit{Bel}$ divided by the SI base unit metre/
A $\textit{ban}$ is a logarithmic unit which measures information or entropy, based on base 10 logarithms and powers of 10, rather than the powers of 2 and base 2 logarithms which define the bit. One $\textit{ban}$ is approximately $3.32 (log_2 10) bits$.
Ban
The $\textit{bar}$ is a non-SI unit of pressure, defined by the IUPAC as exactly equal to $100,000\,Pa$. It is about equal to the atmospheric pressure on Earth at sea level, and since 1982 the IUPAC has recommended that the standard for atmospheric pressure should be harmonized to $100,000\,Pa = 1 \,bar \approx 750.0616827\, Torr$. Units derived from the bar are the megabar (symbol: $Mbar$), kilobar (symbol: $kbar$), decibar (symbol: $dbar$), centibar (symbol: $cbar$), and millibar (symbol: $mbar$ or $mb$). They are not SI or cgs units, but they are accepted for use with the SI.
Bar
The unit $\textit{Bar Litre Per Second}$ is the product of the unit $bar$ and the unit $litre$ divided by the SI base unit for second.
The unit 'Bar Litre Per Second' is the product of the unit bar and the unit litre divided by the SI base unit second
Bar Liter per Second
Bar Litre per Second
product out of the 0.001-fold of the unit bar and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
Bar Cubic Meter per Second
Bar Cubic Metre per Second
pressure relation consisting of the unit bar divided by the unit bar
Bar per Bar
unit with the name bar divided by the SI base unit kelvin
Bar per Kelvin
A barad is a dyne per square centimetre ($dyn \cdot cm^{-2}$), and is equal to $0.1 Pa $ ($1 \, micro \, bar$, $0.000014504 \, p.s.i.$). Note that this is precisely the microbar, the confusable bar being related in size to the normal atmospheric pressure, at $100\,dyn \cdot cm^{-2}$. Accordingly barad was not abbreviated, so occurs prefixed as in $cbarad = centibarad$. Despite being the coherent unit for pressure in c.g.s., barad was probably much less common than the non-coherent bar. Barad is sometimes called $barye$, a name also used for $bar$.
Barad
A barn (symbol b) is a unit of area. Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is used in all fields of high energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles. A barn is defined as $10^{-28} m^2 (100 fm^2)$ and is approximately the cross sectional area of a uranium nucleus. The barn is also the unit of area used in nuclear quadrupole resonance and nuclear magnetic resonance to quantify the interaction of a nucleus with an electric field gradient. While the barn is not an SI unit, it is accepted for use with the SI due to its continued use in particle physics.
Barn
unit for the representation of the cross section barn divided by the unit of the energy electronvolt which is used for the atomic physics, nuclear physics and particle physics
unit for the representation of the cross section barn divided by the unit of the solid angle steradian
unit for the representation of the cross section barn divided by the product of the unit of the solid angle steradian and the unit of the energy electronvolt which is used for the atomic physics, nuclear physics and particle physics
The barye, or sometimes barad, barrie, bary, baryd, baryed, or barie, is the centimetre-gram-second (CGS) unit of pressure. It is equal to 1 dyne per square centimetre.
Barye
The same as a Bar, however the Absolute is added when there is a mixture of gauge and absolute measurements to ensure there is a clear distinction
Bar Absolute
unit for the symbol rate in communications engineering and telecommunication, at which 1 baud corresponds to the speed, at which 1 symbol (defined measurable signal change in the physical exchange medium) will be exchanged per second
A barrel is one of several units of volume, with dry barrels, fluid barrels (UK beer barrel, U.S. beer barrel), oil barrel, etc. The volume of some barrel units is double others, with various volumes in the range of about 100-200 litres (22-44 imp gal; 26-53 US gal).
Barrel
unit of the volume for crude oil according to the Imperial system of units
Barrel (uk Petroleum)
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the unit day
Barrel (uk Petroleum) per Day
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the unit hour
Barrel (uk Petroleum) per Hour
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the unit minute
Barrel (uk Petroleum) per Minute
unit of the volume barrel (UK petroleum) for crude oil according to the Imperial system of units divided by the SI base unit second
Barrel (uk Petroleum) per Second
unit of the volume for crude oil according to the Anglo-American system of units
Barrel (US)
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the unit day
Barrel (US) per Day
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the unit minute
Barrel (US) per Minute
non SI-conform unit of the volume in the USA which applies to a resolution from 1912: 1 dry barrel (US) equals approximately to 115.63 litre
Dry Barrel (US)
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units
Barrel (us Petroleum)
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the unit hour
Barrel (us Petroleum) per Hour
unit of the volume barrel (US petroleum) for crude oil according to the Anglo-American system of units divided by the SI base unit second
Barrel (us Petroleum) per Second
"Heart Beat per Minute" is a unit for 'Heart Rate' expressed as $BPM$.
Heart Beats per Minute
unit for classification of winds according to their speed, developed by Sir Francis Beaufort as measure for the over-all behaviour of a ship's sail at different wind speeds
Beaufort
Counting unit for a count of one billion according to the long scale, defined as one million million on the long scale
Counting unit for a count of one billion according to the short scale, defined as one thousand million on the short scale. This is now the most common sense of the word in all varieties of English.
"Biot" is another name for the abampere (aA), which is the basic electromagnetic unit of electric current in the emu-cgs (centimeter-gram-second) system of units. It is called after a French physicist, astronomer, and mathematician Jean-Baptiste Biot. One abampere is equal to ten amperes in the SI system of units. One abampere is the current, which produces a force of 2 dyne/cm between two infinitively long parallel wires that are 1 cm apart.
Biot
In information theory, a bit is the amount of information that, on average, can be stored in a discrete bit. It is thus the amount of information carried by a choice between two equally likely outcomes. One bit corresponds to about 0.693 nats (ln(2)), or 0.301 hartleys (log10(2)).
Bit
unit bit divided by the SI base unit metre
unit bit divided by the power of the SI base unit metre with the exponent 2
unit bit divided by the power of the SI base unit metre with the exponent 3
A bit per second (B/s) is a unit of data transfer rate equal to 1 bits per second.
Bit per Second
The $\textit{Becquerel}$ is the SI derived unit of activity, usually meaning radioactivity. Radioactivity is caused when atoms disintegrate, ejecting energetic particles. One becquerel is the radiation caused by one disintegration per second; this is equivalent to about $27.0270 \text{picocuries (pCi)}$. The unit is named for a French physicist, Antoine-Henri Becquerel (1852-1908), the discoverer of radioactivity. Note: both the becquerel and the hertz are basically defined as one event per second, yet they measure different things. The hertz is used to measure the rates of events that happen periodically in a fixed and definite cycle. The becquerel is used to measure the rates of events that happen sporadically and unpredictably, not in a definite cycle.
Becquerel
Becquerelium
Bekerel
Μπεκερέλ
Бекерел
Беккерель
בקרל
بيكريل
بکرل
बैक्वेरल
ベクレル
贝克勒尔
The only unit in the category of Specific radioactivity. It is also known as becquerels per kilogram, becquerel/kilogram. This unit is commonly used in the SI unit system. Becquerel Per Kilogram (Bq/kg) has a dimension of $M{-1}T{-1}$ where $M$ is mass, and $T$ is time. It essentially the same as the corresponding standard SI unit $/kg/s$.
"Becquerel per Kilogram" is used to describe radioactivity, which is often expressed in becquerels per unit of volume or weight, to express how much radioactive material is contained in a sample.
Becquerel per KiloGram
One radioactive disintegration per second from a one part in 10**3 of the SI unit of volume (cubic metre).
Becquerels per Litre
Becquerel per Square Meter
Becquerel per Square Metre
Becquerel Per Cubic Meter ($Bq/m3$) is a unit in the category of Radioactivity concentration. It is also known as becquerels per cubic meter, becquerel per cubic metre, becquerels per cubic metre, becquerel/cubic inch. This unit is commonly used in the SI unit system. Becquerel Per Cubic Meter (Bq/m3) has a dimension of $L{-3}T{-1}$ where $L$ is length, and $T$ is time. It essentially the same as the corresponding standard SI unit $/s\cdot m{3}$.
The SI derived unit of unit in the category of Radioactivity concentration.
Becquerel per Cubic Meter
Becquerel per Cubic Metre
TBD
Becquerels Second per Cubic Metre
Breath per Minute
The brewster (B) is a non-SI unit used to measure the susceptibility of a material to photoelasticity, or the value of the stress-optic coefficient of the material. The unit has dimensions reciprocal to those of stress. One brewster is defined to be equal to 10^-12 square metres per newton (m^2/N or 1/Pa) or 10^-13 square centimetres per dyne (cm^2/dyn). The unit is named after David Brewster, who discovered stress-induced birefringence in 1816.
Brewster
unit of heat energy according to the Imperial system of units in a reference temperature of 39 °F
unit of heat energy according to the Imperial system of units in a reference temperature of 59 °F
unit of head energy according to the Imperial system of units at a reference temperature of 60 °F
$\textit{British Thermal Unit}$ (BTU or Btu) is a traditional unit of energy equal to about $1.0550558526 \textit{ kilojoule}$. It is approximately the amount of energy needed to heat 1 pound (0.454 kg) of water from $39^{\circ}{F}$ to $40^{\circ}{F}$ . The unit is most often used in the power, steam generation, heating and air conditioning industries. In scientific contexts the BTU has largely been replaced by the SI unit of energy, the $joule$, though it may be used as a measure of agricultural energy production (BTU/kg). It is still used unofficially in metric English-speaking countries (such as Canada), and remains the standard unit of classification for air conditioning units manufactured and sold in many non-English-speaking metric countries.
British Thermal Unit (international Definition)
${\bf BTU_{IT} \, Foot}$ is an Imperial unit for $\textit{Thermal Energy Length}$ expressed as $Btu-ft$.
Btu Foot
A $BTU_{IT}$, $\italic{Foot per Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Thermal Conductivity', expressed as $Btu_{it} \cdot ft/(h \cdot ft^2 \cdot degF)$.
British thermal unit (international table) foot per hour Square foot degree Fahrenheit is the unit of the thermal conductivity according to the Imperial system of units.
Btu (it) Foot per Square Foot Hour Degree Fahrenheit
qudt:exactMatch: unit:BTU_IT-FT-PER-HR-FT2-DEG_F
${\bf BTU \, Inch}$ is an Imperial unit for 'Thermal Energy Length' expressed as $Btu-in$.
Btu Inch
$BTU_{th}$ Inch per Square Foot Hour Degree Fahrenheit is an Imperial unit for 'Thermal Conductivity' expressed as $Btu_{it}-in/(h-ft^{2}-degF)$. An International British thermal unit inch per second per square foot per degree Fahrenheit is a unit of thermal conductivity in the US Customary Units and British Imperial Units. $1\,Btu_{it} \cdot in/(h \cdot ft^{2} \cdot degF)$ shows that one thermochemical BTU of heat per one hour moves through one square foot of material, which is one foot thick due to a temperature difference of one degree Fahrenheit.
$Btu_{it} \cdot in/(h \cdot ft^{2} \cdot degF)$
BTU (th) Inch per Square Foot Hour Degree Fahrenheit is an Imperial unit for 'Thermal Conductivity', an International British thermal unit inch per second per square foot per degree Fahrenheit is a unit of thermal conductivity in the US Customary Units and British Imperial Units.
British Thermal Unit (international Table) Inch per Hour Square Foot Degree Fahrenheit
qudt:exactMatch: unit:BTU_IT-IN-PER-HR-FT2-DEG_F
The unit $BTU_{IT}$, Inch per Square Foot Second Degree Fahrenheit, is an Imperial unit for 'Thermal Conductivity' expressed as $Btu_{it}-in/(ft^{2}-s-degF)$.
British thermal unit (international table) inch per second Square foot degree Fahrenheit is the unit of the thermal conductivity according to the Imperial system of units.
Btu (it) Inch per Square Foot Second Degree Fahrenheit
unit of the thermal conductivity according to the Imperial system of units
British Thermal Unit (international Table) Inch per Second Square Foot Degree Fahrenheit
$\textit{British Thermal Unit (IT) Per Fahrenheit Degree}$ ($Btu (IT)/^\circ F$) is a measure of heat capacity. It can be converted to the corresponding standard SI unit $J/K$ by multiplying its value by a factor of $1899.10534$.
Btu (it) per Degree Fahrenheit
$\textit{BTU per Degree Rankine}$ is an Imperial unit for 'Heat Capacity' expressed as $Btu/degR$.
Btu per Degree Rankine
$\textit{BTU per Square Foot}$ is an Imperial unit for 'Energy Per Area' expressed as $Btu/ft^2$.
Btu per Square Foot
unit of the surface heat flux according to the Imperial system of units
British Thermal Unit (international Table) per Square Foot Hour
$\textit{BTU per Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Coefficient Of Heat Transfer' expressed as $Btu/(h-ft^{2}-degF)$.
Btu per Square Foot Hour Degree Fahrenheit
British Thermal Unit (international Table) per Square Foot Second
$\textit{BTU per Square Foot Second Degree Fahrenheit}$ is an Imperial unit for 'Coefficient Of Heat Transfer' expressed as $Btu/(ft^{2}-s-degF)$.
Btu per Square Foot Second Degree Fahrenheit
$\textit{British Thermal Unit (IT) Per Cubic Foot}$ ($Btu (IT)/ft^3$) is a unit in the category of Energy density. It is also known as Btu per cubic foot, Btu/cubic foot. This unit is commonly used in the UK, US unit systems. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $J/m^3$ by multiplying its value by a factor of 37258.94579.
British Thermal Unit (it) per Cubic Foot
The $\text{BTU per Hour}$ is the amount of energy that is being produced or consumed per hour.
Btu per Hour
$\textit{BTU per Hour Square Foot}$ is an Imperial unit for 'Power Per Area' expressed as $Btu/(h-ft^2)$.
Btu per Hour Square Foot
unit of the heat transition coefficient according to the Imperial system of units
British Thermal Unit (international Table) per Hour Square Foot Degree Fahrenheit
unit of the heat transfer coefficient according to the Imperial system of units
British Thermal Unit (international Table) per Hour Square Foot Degree Rankine
British Thermal Unit (international Table) per Square Inch Second
The amount of energy generated by a pound of substance is measured in British thermal units (IT) per pound of mass. 1 $Btu_{IT}/lb$ is equivalent to $2.326 \times 10^3$ joule per kilogram (J/kg).
Btu-it-per-lb
British Thermal Unit (therm.) Per Pound Per Fahrenheit Degree (Btu (therm.)/lb- degF) is a unit in the category of Specific heat. This unit is commonly used in the UK unit system. British Thermal Unit (therm.) Per Pound Per Fahrenheit Degree (Btu (therm.)/lb-degF) has a dimension of $L2T^{-2}Q^{-1}$ where $L$ is length, $T$ is time, and $Q$ is temperature. It can be converted to the corresponding standard SI unit $J/kg-K$ by multiplying its value by a factor of 4183.99895.
Btu per Pound Degree Fahrenheit
${\bf BTU \, per \, Pound \, Degree \, Rankine}$ is a unit for 'Specific Heat Capacity' expressed as $Btu/(lb-degR)$.
Btu per Pound Degree Rankine
Unit of heat energy according to the Imperial system of units divided by the unit avoirdupois pound of force according to the avoirdupois system of units
British Thermal Unit (international Table) per Pound of Force
Unit of heat energy according to the Imperial system of units divided by the product of a pound of force and a degree Fahrenheit
British Thermal Unit (international Table) per Pound of Force Degree Fahrenheit
Unit of heat energy according to the Imperial system of units divided by the product of a pound of force and a degree Rankine
British Thermal Unit (international Table) per Pound of Force Degree Rankine
unit of the heat energy according to the Imperial system of units divided by the unit minute
British Thermal Unit (international Table) per Minute
${\bf BTU \, per \, Pound \,Mole}$ is an Imperial unit for 'Energy And Work Per Mass Amount Of Substance' expressed as $Btu/(lb-mol)$.
Btu per Pound Mole
${\bf BTU \, per \, Pound \, Mole \, Degree \, Fahrenheit}$ is an Imperial unit for 'Molar Heat Capacity' expressed as $Btu/(lb-mol-degF)$.
Btu per Pound Mole Degree Fahrenheit
${\bf BTU \, per \, Second}$ is an Imperial unit for 'Heat Flow Rate' expressed as $Btu/s$.
Btu per Second
British Thermal Unit (international Table) per Second Foot Degree Rankine
$\textit{BTU per Second Square Foot}$ is an Imperial unit for 'Power Per Area' expressed as $Btu/(s\cdot ft^2)$.
Btu per Second Square Foot
British Thermal Unit (international Table) per Second Square Foot Degree Fahrenheit
British Thermal Unit (international Table) per Second Square Foot Degree Rankine
unit of the heat energy according to the Imperial system of units
British Thermal Unit (mean)
The $\textit{British Thermal Unit (thermochemical definition)}$ ($BTU_{th}$), is a traditional unit of energy equal to about $1.0543502645 kilojoule$. It is approximately the amount of energy needed to heat 1 pound (0.454 kg) of water from $39^{\circ}\text{F}$ ($3.9^{\circ}\text{C}$) to $40^{\circ}\text{F}$ ($4.4^{\circ}\text{C}$). The unit is most often used in the power, steam generation, heating and air conditioning industries. In scientific contexts the BTU has largely been replaced by the SI unit of energy, the $joule$.
British Thermal Unit (thermochemical Definition)
The $\textit{BTU (TH) Foot per Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Thermal Conductivity' defined as: $$Btu_{th} \cdot ft/(h \cdot ft^2 \cdot degF)$$.
Btu (th) Foot per Square Foot Hour Degree Fahrenheit
The $\textit{British Thermal Unit (thermochemical) Foot Per Hour Square Foot degree Fahrenheit}$ is a unit of thermal conductivity in the Imperial system of units.
British Thermal Unit (thermochemical) Foot per Hour Square Foot Degree Fahrenheit
${\bf BTU_{th}}$, Inch per Square Foot Hour Degree Fahrenheit, is an Imperial unit for 'Thermal Conductivity' expressed as $Btu-in/(h-ft^{2}-degF)$. A thermochemical British thermal unit inch per second per square foot per degree Fahrenheit is a unit of thermal conductivity in the US Customary Units and British Imperial Units. $1 Btu_{th} \cdot in/(h \cdot ft^{2} \cdot degF)$ shows that one thermochemical BTU of heat per one hour moves through one square foot of material, which is one foot thick due to a temperature difference of one degree Fahrenheit.
$Btu_{th} \cdot in/(h \cdot ft^{2} \cdot degF)$
Unit of thermal conductivity according to the Imperial system of units
Btu (th) Inch per Square Foot Hour Degree Fahrenheit
The $\textit{BTU (TH) Inch per Square Foot Second Degree Fahrenheit}$ is an Imperial unit for 'Thermal Conductivity' expressed as: $$Btu_{th} \cdot in/(ft^{2} \cdot s \cdot degF)$$.
Btu (th) Inch per Square Foot Second Degree Fahrenheit
unit of the heat capacity according to the Imperial system of units
British Thermal Unit (thermochemical) per Degree Fahrenheit
British Thermal Unit (thermochemical) per Degree Rankine
unit of the areal-related energy transmisson according to the Imperial system of units
British Thermal Unit (thermochemical) per Square Foot
British Thermal Unit (thermochemical) per Square Foot Hour
British Thermal Unit (thermochemical) per Square Foot Minute
British Thermal Unit (thermochemical) per Square Foot Second
British Thermal Unit (TH) Per Cubic Foot ($Btu (TH)/ft^3$) is a unit in the category of Energy density. It is also known as Btu per cubic foot, Btu/cubic foot. This unit is commonly used in the UK, US unit systems. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $J/m^3$ by multiplying its value by a factor of 37234.03.
British Thermal Unit (th) per Cubic Foot
unit of the heat energy according to the Imperial system of units divided by the unit hour
British Thermal Unit (thermochemical) per Hour
British Thermal Unit (thermochemical) per Hour Square Foot Degree Fahrenheit
${\bf Btu_{th} / lbm}$, British Thermal Unit (therm.) Per Pound Mass, is a unit in the category of total energy per unit mass, commonly known as specific enthalpy. It is also known as Btu per pound, Btu/pound, Btu/lb. This unit is commonly used in the UK unit system. British Thermal Unit (therm.) Per Pound Mass (Btu (therm.)/lbm) has a dimension of $L^2T^{-2}$ where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit J/kg by multiplying its value by a factor of 2324.443861.
British Thermal Unit (th) per Pound
unit of the thermal conductivity according to the Imperial system of units divided by the units pound and degree Fahrenheit
British Thermal Unit (thermochemical) per Pound Degree Fahrenheit
unit of the heat capacity (British Thermal Unit - thermochemical - according to the international table according to the Rankine degree) according to the Imperial system of units divided by the unit avoirdupois pound according to the avoirdupois system of units
British Thermal Unit (thermochemical) per Pound Degree Rankine
British Thermal Unit (thermochemical) per Minute
unit of the heat energy according to the Imperial system of units divided by the SI base unit second
British Thermal Unit (thermochemical) per Second
British Thermal Unit (thermochemical) per Second Square Foot Degree Fahrenheit
A bushel is an imperial unit of dry volume, equivalent in each of these systems to 4 pecks or 8 gallons. It is used for volumes of dry commodities (not liquids), most often in agriculture. It is abbreviated as bsh. or bu. In modern usage, the dry volume is usually only nominal, with bushels referring to standard weights instead.
Bushel (UK)
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the unit for time day
Bushel (UK) per Day
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the unit for time hour
Bushel (UK) per Hour
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the unit for time minute
Bushel (UK) per Minute
unit of the volume bushel (UK) (for fluids and for dry measures) according to the Imperial system of units divided by the SI base unit second
Bushel (UK) per Second
A bushel is an imperial and U.S. customary unit of dry volume, equivalent in each of these systems to 4 pecks or 8 gallons. It is used for volumes of dry commodities (not liquids), most often in agriculture. It is abbreviated as bsh. or bu. In modern usage, the dry volume is usually only nominal, with bushels referring to standard weights instead.
Bushel (US)
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units
Bushel (us Dry)
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the unit for time day
Bushel (us Dry) per Day
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the unit for time hour
Bushel (us Dry) per Hour
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the unit for time minute
Bushel (us Dry) per Minute
unit of the volume bushel (US dry) for dry measure according to the Anglo-American system of units divided by the SI base unit second
Bushel (us Dry) per Second
The byte is a unit of digital information in computing and telecommunications that most commonly consists of eight bits.
Byte
unit byte divided by the SI base unit second
DNA sequence length in numbers of base pairs. One bp corresponds to approximately 3.4 Å (340 pm)[23] of length along the strand, and to roughly 618 or 643 daltons for DNA and RNA respectively.
One bp corresponds to approximately 3.4 Å (340 pm)[23] of length along the strand, and to roughly 618 or 643 daltons for DNA and RNA respectively.
Base Pair
The SI unit of electric charge. One coulomb is the amount of charge accumulated in one second by a current of one ampere. Electricity is actually a flow of charged particles, such as electrons, protons, or ions. The charge on one of these particles is a whole-number multiple of the charge e on a single electron, and one coulomb represents a charge of approximately 6.241 506 x 1018 e. The coulomb is named for a French physicist, Charles-Augustin de Coulomb (1736-1806), who was the first to measure accurately the forces exerted between electric charges.
Coulomb
Coulombium
Culombio
Kulomb
Κουλόμπ
Кулон
קולון
كولوم
کولمب/کولن
कूलम्ब
クーロン
库伦
The $\text{Coulomb Meter (C-m)}$ is a unit in the category of Electric dipole moment. It is also known as atomic unit, u.a., au, ua. This unit is commonly used in the SI unit system. Coulomb Meter (C-m) has a dimension of LTI where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb Meter
Coulomb Metr
Coulomb Metre
Coulomb per Metro
Coulomb-metro
Coulomb-metru
Coulomb-mètre
Coulombmeter
Culombio Metro
Кулон-метр
كولوم متر
نیوتون متر
कूलम्ब मीटर
クーロンメートル
库伦米
Coulomb Square Meter (C-m2) is a unit in the category of Electric quadrupole moment. This unit is commonly used in the SI unit system. Coulomb Square Meter (C-m2) has a dimension of L2TI where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb Mal Quadratmeter
Coulomb Meter Persegi
Coulomb Square Meter
Coulomb Square Metre
Coulomb per Metro Quadrato
کولن متر مربع
库仑平方米
product of the SI derived unit coulomb and the power of the SI base unit metre with the exponent 2 divided by the SI base unit kilogram
Coulomb Square Meter (C-m2-per-volt) is a unit in the category of Electric polarizability.
Coulomb Mal Quadratmeter Je Volt
Coulomb Square Meter per Volt
Coulomb Square Metre per Volt
Coulomb per Metro Quadrato Al Volt
کولن متر مربع بر ولت
库伦平方米每伏特
derived SI unit coulomb divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Coulomb per Square CentiMeter
Coulomb per Square CentiMetre
derived SI unit coulomb divided by the 0.000 001-fold of the power of the SI base unit metre by exponent 3
Coulomb per Cubic CentiMeter
Coulomb per Cubic CentiMetre
$\textit{Coulomb Per Kilogram (C/kg)}$ is the unit in the category of Exposure. It is also known as coulombs per kilogram, coulomb/kilogram. This unit is commonly used in the SI unit system. Coulomb Per Kilogram (C/kg) has a dimension of $M^{-1}TI$ where $M$ is mass, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb per KiloGram
Coulomb per KiloGram Second
"Coulomb per Meter" is a unit for 'Electric Charge Line Density' expressed as $C/m$.
Coulomb per Meter
Coulomb per Metre
Coulomb Per Square Meter ($C/m^2$) is a unit in the category of Electric charge surface density. It is also known as coulombs per square meter, coulomb per square metre, coulombs per square metre, coulomb/square meter, coulomb/square metre. This unit is commonly used in the SI unit system. Coulomb Per Square Meter (C/m2) has a dimension of $L^{-2}TI$ where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb Al Metro Quadrato
Coulomb Bölü Metre Kare
Coulomb Je Quadratmeter
Coulomb Na Metr Čtvereční
Coulomb Par Mètre Carré
Coulomb Pe Metru Pătrat
Coulomb Por Metro Quadrado
Coulomb per Meter Persegi
Coulomb per Square Meter
Coulomb per Square Metre
Culombio Por Metro Cuadrado
Kulomb Na Metr Kwadratowy
Кулон На Квадратный Метр
كولوم في المتر المربع
کولمب/کولن بر مترمربع
कूलम्ब प्रति वर्ग मीटर
クーロン毎平方メートル
库伦每平方米
Coulomb Per Cubic Meter ($C/m^{3}$) is a unit in the category of Electric charge density. It is also known as coulomb per cubic metre, coulombs per cubic meter, coulombs per cubic metre, coulomb/cubic meter, coulomb/cubic metre. This unit is commonly used in the SI unit system. Coulomb Per Cubic Meter has a dimension of $L^{-3}TI$ where $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb per Cubic Meter
Coulomb per Cubic Metre
($C/mol$) is a unit in the category of Molar electric charge. It is also known as $coulombs/mol$. Coulomb Per Mol has a dimension of $TN{-1}I$ where $T$ is time, $N$ is amount of substance, and $I$ is electric current. This unit is the standard SI unit in this category.
Coulomb per Mole
derived SI unit coulomb divided by the 0.000 001-fold of the power of the SI base unit metre by exponent 2
Coulomb per Square MilliMeter
Coulomb per Square MilliMetre
derived SI unit coulomb divided by the 0.000 000 001-fold of the power of the SI base unit metre by exponent 3
Coulomb per Cubic MilliMeter
Coulomb per Cubic MilliMetre
"Square Coulomb Square Meter per Joule" is a unit for 'Polarizability' expressed as $C^{2} m^{2} J^{-1}$.
Square Coulomb Square Meter per Joule
Square Coulomb Square Metre per Joule
"Cubic Coulomb Meter per Square Joule" is a unit for 'Cubic Electric Dipole Moment Per Square Energy' expressed as $C^{3} m^{3} J^{-2}$.
Cubic Coulomb Meter per Square Joule
Cubic Coulomb Metre per Square Joule
"Quartic Coulomb Meter per Cubic Energy" is a unit for 'Quartic Electric Dipole Moment Per Cubic Energy' expressed as $C^{4} m^{4} J^{-3}$.
Quartic Coulomb Meter per Cubic Energy
Quartic Coulomb Metre per Cubic Energy
unit for the quantity of heat which is required to warm up 1 g of water, which is free of air, at a constant pressure of 101.325 kPa (the pressure of the standard atmosphere on sea level) from 14.5 degrees Celsius to 15.5 degrees Celsius
Calorie (15 Degrees C)
unit for quantity of heat, which is to be required for 1 g air free water at a constant pressure from 101,325 kPa, to warm up the pressure of standard atmosphere at sea level, from 19.5 °C on 20.5 °C
International Table Calorie
Calories produced per gram of substance.
unit calorie according to the international steam table divided by the 0.001-fold of the SI base unit kilogram
Calorie (international Table) per Gram
unit calorieIT divided by the products of the units gram and degree Celsius
Calorie (international Table) per Gram Degree Celsius
unit calorieIT divided by the product of the SI base unit gram and Kelvin
Calorie (international Table) per Gram Kelvin
Calorie (international Table) per Second CentiMeter Kelvin
Calorie (international Table) per Second CentiMetre Kelvin
Calorie (international Table) per Second Square CentiMeter Kelvin
Calorie (international Table) per Second Square CentiMetre Kelvin
unit used particularly for calorific values of foods
Calorie (mean)
The energy needed to increase the temperature of a given mass of water by $1 ^\circ C$ at atmospheric pressure depends on the starting temperature and is difficult to measure precisely. Accordingly, there have been several definitions of the calorie. The two perhaps most popular definitions used in older literature are the $15 ^\circ C$ calorie and the thermochemical calorie.
Thermochemical Calorie
Calorie (thermochemical) per CentiMeter Second Degree Celsius
Calorie (thermochemical) per CentiMetre Second Degree Celsius
Calorie (thermochemical) per Square CentiMetre
Calorie (thermochemical) per Square CentiMetre Minute
Calorie (thermochemical) per Square CentiMetre Second
$\textit{Thermochemical Calorie per Cubic Centimeter Kelvin}$ is a unit for 'Volumetric Heat Capacity' expressed as $cal_th/(cm^{3} K)$.
Thermochemical Calorie per Cubic Centimeter Kelvin is a unit for Volumetric Heat Capacity expressed as cal{th}/(cm³·K).
Thermochemical Calorie per Cubic CentiMeter Kelvin
Thermochemical Calorie per Cubic CentiMetre Kelvin
Thermochemical Calorie. Calories produced per gram of substance.
unit thermochemical calorie divided by the 0.001-fold of the SI base unit kilogram
Calorie (thermochemical) per Gram
unit calorie (thermochemical) divided by the product of the unit gram and degree Celsius
Calorie (thermochemical) per Gram Degree Celsius
unit calorie (thermochemical) divided by the product of the SI derived unit gram and the SI base unit Kelvin
Calorie (thermochemical) per Gram Kelvin
Calorie (thermochemical) per Minute
unit calorie divided by the SI base unit second
Calorie (thermochemical) per Second
Calorie (thermochemical) per Second CentiMeter Kelvin
Calorie (thermochemical) per Second CentiMetre Kelvin
Calorie (thermochemical) per Second Square CentiMeter Kelvin
Calorie (thermochemical) per Second Square CentiMetre Kelvin
The carat is a unit of mass equal to 200 mg and is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, and soon afterward in many countries around the world. The carat is divisible into one hundred points of two milligrams each. Other subdivisions, and slightly different mass values, have been used in the past in different locations. In terms of diamonds, a paragon is a flawless stone of at least 100 carats (20 g). The ANSI X.12 EDI standard abbreviation for the carat is $CD$.
Carat
The typical expression of morbidity rate, expressed as cases per 1000 individuals, per year.
Cases per 1000 Individuals Year
United Arab Emirates Dirham
Unit for measuring the cost of electricity.
Bulgarian Lev per KiloWatt Hour
Bolivian Mvdol (funds Code)
Wir Euro (complementary Currency)
The Swiss Francs per hectare (CHF/ha) is a unit for measuring cost per area.
Franchi Svizzeri per Ettaro
Francs Suisses Par Hectare
Schweizer Franken Pro Hektare
Swiss Francs per Hectare
The Swiss Francs per kilogram (CHF/kg) is a unit for measuring the hardware cost of substance or material.
Unit for measuring the hardware cost of substance or material
Swiss Francs per KiloGram
Swiss Franc per KiloWatt Hour
Wir Franc (complementary Currency)
Unidades De Formento (funds Code)
Unidad De Valor Real
Czech Koruna per KiloWatt Hour
Danish Krone per KiloWatt Hour
Unit for measuring the hardware cost of a power generation unit relative to the generated power
Euro per KiloWatt
Euro per KiloWatt Hour
Unit for expressing cost per square metre
Euro per Square Metre
Euro per Watt
Euro per Watt Hour
Euro per Watt Second
Pound Sterling per KiloWatt Hour
Gibraltar Pound
Forint per KiloWatt Hour
Japanese Yen
Lao Kip
Norwegian Krone per KiloWatt Hour
Zloty per KiloWatt Hour
Romanian New Leu per KiloWatt Hour
Swedish Krona per KiloWatt Hour
Us Dollar
Venezuelan Bolvar
Cfa Franc Beac
Silver (one Troy Ounce)
Gold (one Troy Ounce)
Uic Franc (special Settlement Currency)
Cfa Franc Bceao
Palladium (one Troy Ounce)
Cfp Franc
Platinum (one Troy Ounce)
$\textit{Candela}$ is a unit for 'Luminous Intensity' expressed as $cd$. The candela is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function (a standardized model of the sensitivity of the human eye to different wavelengths, also known as the luminous efficiency function). A common candle emits light with a luminous intensity of roughly one candela.
Candela
Candelă
Kandela
Καντέλα
Кандела
קנדלה
قنديلة
کاندلا
कॅन्डेला
カンデラ
坎德拉
base unit SI candela divided by the power of the unit foot according to the Anglo-American and Imperial system of units by exponent 2
"Candela per Square Inch" is a unit for 'Luminance' expressed as $cd/in^{2}$.
Candela per Square Inch
Candela per KiloLumen
Candela per Lumen
The candela per square metre ($cd/m^2$) is the derived SI unit of luminance. The unit is based on the candela, the SI unit of luminous intensity, and the square metre, the SI unit of area. Nit (nt) is a deprecated non-SI name also used for this unit ($1 nit = 1 cd/m^2$). As a measure of light emitted per unit area, this unit is frequently used to specify the brightness of a display device. Most consumer desktop liquid crystal displays have luminances of 200 to 300 $cd/m^2$; the sRGB spec for monitors targets 80 cd/m2. HDTVs range from 450 to about 1000 cd/m2. Typically, calibrated monitors should have a brightness of $120 cd/m^2$. $Nit$ is believed to come from the Latin word nitere, to shine.
Candela per Square Meter
Candela per Square Metre
obsolete, non-legal unit of the power in Germany relating to DIN 1301-3:1979
A chain is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods. There are 10 chains in a furlong, and 80 chains in one statute mile. An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice.
Chain
unit of the length according the Anglo-American system of units
The curie (symbol Ci) is a non-SI unit of radioactivity, named after Marie and Pierre Curie. It is defined as $1Ci = 3.7 \times 10^{10} decays\ per\ second$. Its continued use is discouraged. One Curie is roughly the activity of 1 gram of the radium isotope Ra, a substance studied by the Curies. The SI derived unit of radioactivity is the becquerel (Bq), which equates to one decay per second. Therefore: $1Ci = 3.7 \times 10^{10} Bq= 37 GBq$ and $1Bq \equiv 2.703 \times 10^{-11}Ci $.
Curie
1,000-fold of the unit curie divided by the SI base unit kilogram
A C.G.S System unit for $\textit{Thermal Insulance}$ expressed as "clo".
Clo
The cord is a unit of measure of dry volume used in Canada and the United States to measure firewood and pulpwood. A cord is the amount of wood that, when 'ranked and well stowed' (arranged so pieces are aligned, parallel, touching and compact), occupies a volume of 128 cubic feet (3.62 cubic metres). This corresponds to a well stacked woodpile 4 feet (122 cm) wide, 4 feet (122 cm) high, and 8 feet (244 cm) long; or any other arrangement of linear measurements that yields the same volume. The name cord probably comes from the use of a cord or string to measure it.
Cord
"Count" is a unit for a dimensionless count.
"Candlepower" (abbreviated as cp) is a now-obsolete unit which was used to express levels of light intensity in terms of the light emitted by a candle of specific size and constituents. In modern usage Candlepower equates directly to the unit known as the candela.
Candlepower
"US Liquid Cup" is a unit for 'Liquid Volume' expressed as $cup$.
Us Liquid Cup
unit of the volume according to the Anglo-American system of units
Cup (US)
"Hundred Weight - Long" is a unit for 'Mass' expressed as $cwt$.
Long Hundred Weight
"Hundred Weight - Short" is a unit for 'Mass' expressed as $cwt$.
Hundred Weight - Short
The "cycle per second" is a once-common English name for the unit of frequency now known as the hertz (Hz).
Cycles per Second
"abcoulomb" (abC or aC) or electromagnetic unit of charge (emu of charge) is the basic physical unit of electric charge in the cgs-emu system of units. One abcoulomb is equal to ten coulombs ($1\,abC\,=\,10\,C$).
Abcoulomb
Abcoulomb Per Square Centimeter is a unit in the category of Electric charge surface density. It is also known as abcoulombs per square centimeter, abcoulomb per square centimetre, abcoulombs per square centimetre, abcoulomb/square centimeter,abcoulomb/square centimetre. This unit is commonly used in the cgs unit system. Abcoulomb Per Square Centimeter (abcoulomb/cm2) has a dimension of $L_2TI$. where $L$ is length, $T$ is time, and $I$ is electric current. It can be converted to the corresponding standard SI unit $C/m^2$ by multiplying its value by a factor of 100,000.
Abcoulomb per Square CentiMeter
Abcoulomb per Square CentiMetre
The statcoulomb ($statC$) or franklin ($Fr$) or electrostatic unit of charge ($esu$) is the physical unit for electrical charge used in the centimetre-gram-second system of units (cgs) and Gaussian units. It is a derived unit given by $1\ statC = 1\ g\ cm\ s = 1\ erg\ cm$. The SI system of units uses the coulomb (C) instead. The conversion between C and statC is different in different contexts. The number 2997924580 is 10 times the value of the speed of light expressed in meters/second, and the conversions are exact except where indicated. The coulomb is an extremely large charge rarely encountered in electrostatics, while the statcoulomb is closer to everyday charges.
$1 C \leftrightarrow 2997924580 statC \approx 3.00 \times 10^9 statC,\ 1 \hspace{0.3pc} statC \leftrightarrow \hspace{0.3pc} \approx 3.34 \times 10^{-10} C$ for electric charge.
$1 C \leftrightarrow 4 \pi \times 2997924580 statC \approx 3.77 \times 10^{10} statC,\ 1 \hspace{0.3pc} statC \leftrightarrow \hspace{0.2pc} \approx 2.6 \times 10^{-11} C$ for electric flux $\Phi_D$
$1 C/m \leftrightarrow 4 \pi \times 2997924580 \times 10^{-4} statC/cm \approx 3.77 \times 10^6 statC/cm,\ 1 \hspace{0.3pc} statC/cm \leftrightarrow \hspace{0.3pc} \approx 2.65 \times 10^{-7} C/m$ for electric displacement field $D$.
Statcoulomb
$\textit{Statcoulomb per Square Centimeter}$ is a unit of measure for electric flux density and electric polarization. One Statcoulomb per Square Centimeter is $2.15\times 10^9 \, coulomb\,per\,square\,inch$.
Statcoulomb per Square CentiMeter
Statcoulomb per Square CentiMetre
"Statcoulomb per Mole" is a unit of measure for the electical charge associated with one mole of a substance. The mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as an amount of a substance that contains as many elementary entities (e.g., atoms, molecules, ions, electrons) as there are atoms in 12 grams of pure carbon-12 (12C), the isotope of carbon with atomic weight 12.
Statcoulomb per Mole
The bar is a non-SI unit of pressure, defined by the IUPAC as exactly equal to 100,000 Pa. It is about equal to the atmospheric pressure on Earth at sea level, and since 1982 the IUPAC has recommended that the standard for atmospheric pressure should be harmonized to $100,000\,Pa = 1 bar \approx 750.0616827 Torr$. Units derived from the bar are the megabar (symbol: Mbar), kilobar (symbol: kbar), decibar (symbol: dbar), centibar (symbol: cbar), and millibar (symbol: mbar or mb). They are not SI or cgs units, but they are accepted for use with the SI.
CentiBar
CentiCoulomb
0,000 01-fold of the SI base unit kilogram
CentiGram
CentiLitre
A centimetre is a unit of length in the metric system, equal to one hundredth of a metre, which is the SI base unit of length. Centi is the SI prefix for a factor of $10^{-2}$. The centimetre is the base unit of length in the now deprecated centimetre-gram-second (CGS) system of units.
CentiMeter
CentiMetre
0.01-fold of the SI base unit metre divided by the unit bar
0.01-fold of the SI base unit metre divided by the unit hour
CentiMeter per Hour
CentiMetre per Hour
0.01-fold of the SI base unit metre divided by the SI base unit kelvin
CentiMeter per Kelvin
CentiMetre per Kelvin
CentiMetres per Thousand Years
"Centimeter per Second" is a C.G.S System unit for 'Linear Velocity' expressed as $cm/s$.
CentiMeter per Second
CentiMetre per Second
0.01-fold of the SI base unit metre divided by the product of the SI base unit second and the unit bar
0.01-fold of the SI base unit metre divided by the product of the SI base unit second and the SI base unit Kelvin
$\textit{Centimeter per Square Second}$ is a C.G.S System unit for $\textit{Linear Acceleration}$ expressed as $cm/s^2$.
CentiMeter per Square Second
CentiMetre per Square Second
CentiMetres per Year
$\textit{Centimeter Second Degree Celsius}$ is a C.G.S System unit for 'Length Temperature Time' expressed as $cm-s-degC$.
CentiMeter Second Degree Celsius
CentiMetre Second Degree Celsius
A unit of area equal to that of a square, of sides 1cm
Square CentiMeter
Square CentiMetre
"Square centimeter minute" is a unit for 'Area Time' expressed as $cm^{2} . m$.
Square CentiMeter Minute
Square CentiMetre Minute
Square CentiMetres per Cubic CentiMetre
0.0001-fold of the power of the SI base unit metre by exponent 2 divided by the 0.001-fold SI base unit kilogram
Square CentiMeters per Gram
Square CentiMetres per Gram
0.0001-fold of the power of the SI base unit metre by exponent 2 divided by the SI base unit second
Square CentiMetres per Second
[CGS] unit of the spectral angle profile
Square CentiMeter per Volt Second
Square CentiMetre per Volt Second
"Square Centimeter Second" is a C.G.S System unit for 'Area Time' expressed as $cm^2 . s$.
Square CentiMeter Second
Square CentiMetre Second
The CGS unit of volume, equal to 10-6 cubic meter, 1 milliliter, or about 0.061 023 7 cubic inch
Cubic CentiMeter
Cubic CentiMetre
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit bar
volume ratio consisting of the 0.000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
Cubic CentiMeter per Cubic CentiMeter
Cubic CentiMetre per Cubic CentiMetre
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit day
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit day
Cubic CentiMeter per Day
Cubic CentiMetre per Day
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the SI base unit kelvin
Cubic Centimeter per Gram is a unit in the category of Specific Volume.
Cubic CentiMeters per Gram
Cubic CentiMetres per Gram
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
Cubic CentiMeter per Hour
Cubic CentiMetre per Hour
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit hour and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit hour and the SI base unit kelvin
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit kelvin
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit kelvin
Cubic CentiMeter per Kelvin
Cubic CentiMetre per Kelvin
volume ratio consisting of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
Cubic CentiMeter per Cubic Meter
Cubic CentiMetre per Cubic Metre
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit minute
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit minute
Cubic CentiMeter per Minute
Cubic CentiMetre per Minute
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the SI base unit kelvin
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol
0.000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol
Cubic CentiMeter per Mole
Cubic CentiMetre per Mole
A unit that is the 0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol multiplied by the SI base unit second.
Cubic CentiMeter per Mole Second
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
0,000 001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
Cubic CentiMeter per Second
Cubic CentiMetre per Second
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit second and the unit bar
0.000001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit second and the SI base unit kelvin
0.01-fold of SI base unit metre to the power four
0.01-fold of the SI base unit metre with the exponent 4
Quartic CentiMetre
Zentimeter Hoch 4
Sextic CentiMeter
Sextic CentiMetre
CentiMole
1/100 of SI unit of amount of substance per kilogram
CentiMole per KiloGram
1/100 of SI unit of amount of substance per litre
CentiMole per Litre
$\textit{Centimeter of Water}$ is a C.G.S System unit for 'Force Per Area' expressed as $cm_{H2O}$.
non SI conforming unit of pressure that corresponds to the static pressure generated by a water column with a height of 1 centimetre
Conventional CentiMeter of Water
Conventional CentiMetre of Water
non SI-conforming unit of pressure, at which a value of 1 cmH₂O means the static pressure which is generated by a head of water at a temperature of 4 °C with a height of 1 centimetre
A non-SI-conforming unit of pressure, that corresponds with the static pressure generated by a mercury column with the height of 1 centimetre
CentiMeter of Mercury
CentiMetre of Mercury
non SI-conform unit of pressure, at which a value of 1 cmHg meets the static pressure, which is generated by a mercury at a temperature of 0 °C with a height of 1 centimetre
CentiNewton
0.01-fold of the product of the SI derived unit newton and SI base unit metre
CentiNewton Meter
CentiNewton Metre
0.01-fold of the SI derived unit newton divided by the SI base unit metre to the power two
$\textit{Centipoise}$ is a C.G.S System unit for 'Dynamic Viscosity' expressed as $cP$.
0.01-fold of the CGS unit of the dynamic viscosity poise
CentiPoise
0.01-fold of the CGS unit of the dynamic viscosity poise divided by the unit of the pressure bar
CentiPoise per Bar
[CGS] 0.01-fold of the CGS unit poise for dynamic viscosity divided by the SI base unit Kelvin
$\textit{Centistokes}$ is a C.G.S System unit for 'Kinematic Viscosity' expressed as $cSt$.
CentiStokes
The unified atomic mass unit (symbol: $\mu$) or dalton (symbol: Da) is a unit that is used for indicating mass on an atomic or molecular scale. It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state, and has a value of $1.660538782(83) \times 10^{-27} kg$. One $Da$ is approximately equal to the mass of one proton or one neutron. The CIPM have categorised it as a "non-SI unit whose values in SI units must be obtained experimentally".
Dalton
The $darcy$ (d) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A darcy has dimensional units of length2.
The darcy (d) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A darcy has dimensional units of length².
Darcy
Day
The length of time which passes between a given fixed star in the sky crossing a given projected meridian (line of longitude). The sidereal day is $23 h 56 m 4.1 s$, slightly shorter than the solar day because the Earth 's orbital motion about the Sun means the Earth has to rotate slightly more than one turn with respect to the "fixed" stars in order to reach the same Earth-Sun orientation. Another way of thinking about the difference is that it amounts to $1/365.2425^{th}$ of a day per day, since even if the Earth did not spin on its axis at all, the Sun would appear to make one rotation around the Earth as the Earth completed a single orbit (which takes one year).
Sidereal Day
The typical expression of mortality rate, expressed as deaths per 1000 individuals, per year.
Deaths per 1000 Individuals Year
The expression of mortality rate, expressed as deaths per 1,000,000 individuals, per year.
The expression of mortality rate, expressed as deaths per Million individuals, per year.
Deaths per MilliOn Individuals Year
"Debye" is a C.G.S System unit for 'Electric Dipole Moment' expressed as $D$.
Debye
One decade is a factor of 10 difference between two numbers (an order of magnitude difference) measured on a logarithmic scale. It is especially useful when referring to frequencies and when describing frequency response of electronic systems, such as audio amplifiers and filters. The factor-of-ten in a decade can be in either direction: so one decade up from 100 Hz is 1000 Hz, and one decade down is 10 Hz. The factor-of-ten is what is important, not the unit used, so $3.14 rad/s$ is one decade down from $31.4 rad/s$.
Dec
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by $^\circ$ (the degree symbol), is a measurement of plane angle, representing 1/360 of a full rotation; one degree is equivalent to $2\pi /360 rad$, $0.017453 rad$. It is not an SI unit, as the SI unit for angles is radian, but is an accepted SI unit.
Degree
"Degree per Hour" is an Imperial unit for 'Angular Velocity' expressed as $deg/h$.
Degree per Hour
A change of angle in one SI unit of length.
Degrees per Metre
A unit of measure for the rate of change of plane angle, $d\omega / dt$, in durations of one minute.The vector $\omega$ is directed along the axis of rotation in the direction for which the rotation is clockwise.
Degree per Minute
"Degree per Second" is an Imperial unit for 'Angular Velocity' expressed as $deg/s$.
Degree per Second
$\textit{Degree per Square Second}$ is an Imperial unit for $\textit{Angular Acceleration}$ expressed as $deg/s^2$.
Degree per Square Second
A square degree is a non-SI unit measure of solid angle. It is denoted in various ways, including deg, sq. deg. and $\circ^2$. Just as degrees are used to measure parts of a circle, square degrees are used to measure parts of a sphere. Analogous to one degree being equal to $\pi /180 radians$, a square degree is equal to ($\pi /180)$ or about 1/3283 steradian. The number of square degrees in a whole sphere is or approximately 41 253 deg. This is the total area of the 88 constellations in the list of constellations by area. For example, observed from the surface of the Earth, the Moon has a diameter of approximately $0.5^\circ$, so it covers a solid angle of approximately 0.196 deg, which is $4.8 \times 10$ of the total sky sphere.
Square Degree
unit for the determination of the density of petroleum at 60 degrees F (15.56 degrees C)
Degree Api
unit for the mixing ratio of a soluble dry substance in water at 17.5 degrees C similar to the percent designation for solutions, in which a solution of 1 g saccharose in 100 g saccharose/ water solution corresponds to 1 degree Balling and respectively a one percent solution
Degree Balling
graduation of the areometer scale for determination of densitiy of fluids. The Baumé scale is a pair of hydrometer scales developed by French pharmacist Antoine Baumé in 1768 to measure density of various liquids. The unit of the Baumé scale has been notated variously as degrees Baumé, B°, Bé° and simply Baumé (the accent is not always present). One scale measures the density of liquids heavier than water and the other, liquids lighter than water. The Baumé of distilled water is 0. The API gravity scale is based on errors in early implementations of the Baumé scale.
Degree Baume (origin Scale)
graduation of the areometer scale for determination of density of fluids according to the Anglo-American system of units, which are heavier than water
Degree Baume (us Heavy)
graduation of the areometer scale for determination of density of fluids according to the Anglo-American system of units, which are lighter than water
Degree Baume (us Light)
unit named according to Adolf Brix for the mixing ratio of a soluble dry substance in water with 15.5 °C similar to the percent designation for solutions, in which a solution of 1 g saccharose in 100 g saccharose/water solution corresponds to 1 °Brix and respectively an one percent solution
Degree Brix
unit of the density of the must, as measure for the proportion of the soluble material in the grape must
Degree Oechsle
unit for the mixing ratio of the original gravity in the beer brew at 17.5 °C before the fermentation
Degree Plato
unit of the density of fluids, which are heavier than water
Degree Twaddell
The unit $\textit{Celsius}$, also known as centigrade, is a scale and unit of measurement for temperature. It can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. This definition fixes the magnitude of both the degree Celsius and the kelvin as precisely 1 part in 273.16 (approximately 0.00366) of the difference between absolute zero and the triple point of water. Thus, it sets the magnitude of one degree Celsius and that of one kelvin as exactly the same. Additionally, it establishes the difference between the two scales' null points as being precisely $273.15^{\circ}\text{C}$.
See NIST section SP811 section 4.2.1.1
See NIST section SP811 section 6.2.8
Celsius-fok
Celsius
Darjah Celsius
Degree Celsius
Degré Celsius
Grad Celsius
Grado Celsius
Gradus Celsii
Grau Celsius
Stopień Celsjusza
Stopinja Celzija
Stupně Celsia
Βαθμός Κελσίου
Градус Целзий
Градус Цельсия
درجة مئوية
درجه سانتی گراد/سلسیوس
सेल्सियस
セルシウス度
摄氏度
$\textit{Degree Celsius Centimeter}$ is a C.G.S System unit for 'Length Temperature' expressed as $cm-degC$.
Degree Celsius CentiMeter
Degree Celsius CentiMetre
A unit of measurement that represents the difference between a reference temperature (typically 18°C) and the actual outdoor temperature over one day, used to estimate heating or cooling energy needs for buildings.
Degree Celsius Day
A unit of measurement that represents the difference between a reference temperature (typically 18°C) and the actual outdoor temperature over one hour, used to estimate heating or cooling energy needs for buildings.
Degree Celsius Hour
Derived unit for the product of the temperature in degrees Celsius and the mass density of a medium, integrated over vertical depth or height in metres.
Degrees Celsius KiloGram per Square Metre
unit with the name °Celsius divided by the unit bar
$\textit{Degree Celsius per Hour}$ is a unit for 'Temperature Per Time' expressed as $degC / h$.
Degree Celsius per Hour
The unit $\textit{Degree Celsius Per Kelvin}$ is Degree Celsius divided by the SI base unit kelvin.
unit with the name Degree Celsius divided by the SI base unit kelvin
Degree Celsius per Kelvin
Degrees Celsius per Metre
$\textit{Degree Celsius per Minute}$ is a unit for 'Temperature Per Time' expressed as $degC / m$.
Degree Celsius per Minute
$\textit{Degree Celsius per Second}$ is a unit for 'Temperature Per Time' expressed as $degC / s$.
Degree Celsius per Second
A rate of change of temperature expressed on the Celsius scale over a period of an average calendar year (365.25 days).
Degrees Celsius per Year
temperature multiplied by unit of time.
Degree Celsius Week
Degrees Celsius Squared
Square Degrees Celsius per Second
Growing Degree Days (cereals)
The unit $\textit{Degree Fahrenheit}$ is an Imperial unit for 'Thermodynamic Temperature' expressed as $\circ\text{F}$
Degree Fahrenheit
A unit of measurement that represents the difference between a reference temperature (typically 65°C) and the actual outdoor temperature over one day, used to estimate heating or cooling energy needs for buildings.
Degree Fahrenheit Day
A unit of measurement that represents the difference between a reference temperature (typically 65°C) and the actual outdoor temperature over one hour, used to estimate heating or cooling energy needs for buildings.
Degree Fahrenheit Hour
unit of the thermal resistor according to the Imperial system of units
Degree Fahrenheit Hour Square Foot per British Thermal Unit (international Table)
unit of specific thermal resistance according to the Imperial system of units
Degree Fahrenheit Hour Square Foot per British Thermal Unit (international Table) Inch
unit of the thermal resistor according to the according to the Imperial system of units
Degree Fahrenheit Hour Square Foot per British Thermal Unit (thermochemical)
Degree Fahrenheit Hour Square Foot per British Thermal Unit (thermochemical) Inch
$\textit{Degree Fahrenheit Hour per BTU}$ is an Imperial unit for 'Thermal Resistance' expressed as $degF-h/Btu$.
Degree Fahrenheit Hour per Btu
The unit $\textit{Degree Fahrenheit hour per British thermal unit (thermochemical)}$ is a non SI-conform unit of the thermal resistance according to the Imperial system of units.
Degree Fahrenheit Hour per British Thermal Unit (thermochemical)
$\textit{Degree Fahrenheit per bar}$ is the traditional unit degree Fahrenheit for temperature according to the Anglo-American system of units divided by the unit bar.
$\textit{Degree Fahrenheit per Hour}$ is a unit for 'Temperature Per Time' expressed as $degF / h$.
Degree Fahrenheit per Hour
traditional unit degree Fahrenheit for temperature according to the Anglo-American system of units divided by the SI base unit Kelvin
Degree Fahrenheit per Kelvin
$\textit{Degree Fahrenheit per Minute}$ is a unit for 'Temperature Per Time' expressed as $degF / m$.
Degree Fahrenheit per Minute
$\textit{Degree Fahrenheit per Second}$ is a unit for 'Temperature Per Time' expressed as $degF / s$.
Degree Fahrenheit per Second
The unit $\textit{Degree Fahrenheit per Square Second}$ is a C.G.S System unit for expressing the acceleration of a temperature expressed as $degF / s^2$.
'Degree Fahrenheit per Square Second' is a unit for expressing the acceleration of a temperature expressed as 'degF /s2'.
Degree Fahrenheit per Square Second
The unit $\textit{Degree Fahrenheit Second per British thermal unit (international table)}$ is a non SI-conform unit of the thermal resistance according to the Imperial system of units.
Degree Fahrenheit Second per British Thermal Unit (international Table)
The unit $\textit{Degree Fahrenheit Second per British thermal unit (thermochemical)}$ is a non SI-conform unit of the thermal resistance according to the Imperial system of units.
Degree Fahrenheit Second per British Thermal Unit (thermochemical)
The unit $\textit{Degree Rankine}$ is a thermodynamic (absolute) temperature scale. The symbol for degrees Rankine is $^\circ R$ or $^\circ Ra$ if necessary to distinguish it from the Rømer and Réaumur scales). Zero on both the Kelvin and Rankine scales is absolute zero, but the Rankine degree is defined as equal to one degree Fahrenheit, rather than the one degree Celsius used by the Kelvin scale. A temperature of $-459.67 ^\circ F$ is exactly equal to $0 ^\circ R$.
Degree Rankine
The unit $\textit{Degree Rankine per Hour}$ is a rate of change of temperature measured in degree Rankine in periods of one hour.
Degree Rankine per Hour
The unit $\textit{Degree Rankine per Minute}$ is a rate of change of temperature measured in degree Rankine in periods of one minute.
Degree Rankine per Minute
The unit $\textit{Degree Rankine per Second}$ is a rate of change of temperature measured in degree Rankine in periods of one second.
Degree Rankine per Second
Denier or den is a unit of measure for the linear mass density of fibers. It is defined as the mass in grams per 9,000 meters. In the International System of Units the tex is used instead (see below). The denier is based on a natural standard: a single strand of silk is approximately one denier. A 9,000-meter strand of silk weighs about one gram. The term denier is from the French denier, a coin of small value (worth 1/12 of a sou). Applied to yarn, a denier was held to be equal in weight to 1/24 of an ounce. The term microdenier is used to describe filaments that weigh less than one gram per 9,000 meter length.
Denier
The unit $\textit{Dioptre}$, or $\textit{Diopter}$, is a unit of measurement for the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, $1/metre$). For example, a $3 \; dioptre$ lens brings parallel rays of light to focus at $1/3\,metre$. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. Though the diopter is based on the SI-metric system it has not been included in the standard so that there is no international name or abbreviation for this unit of measurement within the international system of units this unit for optical power would need to be specified explicitly as the inverse metre.
Diopter
point density as amount of the picture base element divided by the unit inch according to the Anglo-American and the Imperial system of units
Dots per Inch
non SI-conforming unit of mass comes from the Anglo-American Troy or Apothecaries' Weight System of units which is mainly used in England, in the Netherlands and in the USA as a commercial weight
Dram (UK)
non SI-conform unit of the mass according to the avoirdupois system of units: 1 dram (av. ) = 1/16 ounce (av. ) = 1/256 pound (av.)
Dram (US)
"Penny Weight" is a unit for 'Mass' expressed as $dwt$.
Penny Weight
In physics, the $dyne$ is a unit of force specified in the centimetre-gram-second (CGS) system of units. The $dyne$ is a unit of force specified in the centimetre-gram-second (CGS) system of units. One $dyne$ is equal to $\SI{10}{\micro\newton}$. Equivalently, the $dyne$ is defined as 'the force required to accelerate a mass of one gram at a rate of one centimetre per square second'. A $\textit{dyne per centimetre}$ is the unit traditionally used to measure surface tension.
Dyne
"Dyne Centimeter" is a C.G.S System unit for 'Torque' expressed as $dyn-cm$.
Dyne CentiMeter
Dyne CentiMetre
Dyne per CentiMeter
Dyne per CentiMetre
"Dyne per Square Centimeter" is a C.G.S System unit for 'Force Per Area' expressed as $dyn/cm^{2}$.
Dyne per Square CentiMeter
Dyne per Square CentiMetre
Dyne Second per CentiMeter
Dyne Second per CentiMetre
CGS unit of the acoustic image impedance of the medium
Dyne Second per Cubic CentiMeter
Dyne Second per Cubic CentiMetre
[CGS] unit of the acoustic impedance (volume flow rate-related pressure)
Dyne Second per CentiMetre to the Fifth Power
unit of the area which is mainly common in the agriculture and forestry: 1 da = 10 a
DecaRe
DecaCoulomb
DecaGram
DecaLitre
DecaMeter
DecaMetre
1 000-fold of the power of the SI base unit metre by exponent 3
Cubic DecaMeter
Cubic DecaMetre
DecaPascal
10-fold of the CGS unit of the dynamic viscosity poise
DecaPoise
Dekapoise
A customary logarithmic measure most commonly used (in various ways) for measuring sound.Sound is measured on a logarithmic scale. Informally, if one sound is $1\,bel$ (10 decibels) "louder" than another, this means the louder sound is 10 times louder than the fainter one. A difference of 20 decibels corresponds to an increase of 10 x 10 or 100 times in intensity. The beginning of the scale, 0 decibels, can be set in different ways, depending on exactly the aspect of sound being measured. For sound intensity (the power of the sound waves per unit of area) $0\,decibel$ is equal to $1\,picoWatts\,per\,Metre\,Squared$. This corresponds approximately to the faintest sound that can be detected by a person who has good hearing. For sound pressure (the pressure exerted by the sound waves) 0 decibels equals $20\,micropascals\,RMS$, and for sound power $0\,decibels$ sometimes equals $1\,picoWatt$. In all cases, one decibel equals $\approx\,0.115129\,neper$.
DeciBel
unit of level used to indicate that a power ratio is expressed in decibel (dB) with reference to one milliwatt (mW)
unit of level used to indicate that a power ratio is expressed in decibel (dB) with reference to one milliwatt (mW) devided by the 1,000,000-fold of the derived unit hertz
0.1-fold of the unit bel divided by 1,000-fold of the SI base unit metre
0.1-fold of the unit bel divided by the SI base unit metre
The decibel watt or dBW is a unit for the measurement of the strength of a signal expressed in decibels relative to one watt.
The bar is a non-SI unit of pressure, defined by the IUPAC as exactly equal to 100,000 Pa. It is about equal to the atmospheric pressure on Earth at sea level, and since 1982 the IUPAC has recommended that the standard for atmospheric pressure should be harmonized to $100,000 Pa = 1 bar \approx 750.0616827 Torr$. Units derived from the bar are the megabar (symbol: Mbar), kilobar (symbol: kbar), decibar (symbol: dbar), centibar (symbol: cbar), and millibar (symbol: mbar or mb). They are not SI or cgs units, but they are accepted for use with the SI.
DeciBar
A rate of change of pressure expressed in decibars over a period of an average calendar year (365.25 days).
DeciBars per Year
Logarithmic unit of sound pressure level with frequency weighting A
"Decibel Carrier Unit" is a logarithmic unit for 'Signal Detection Threshold' expressed as $dBc$.
DeciBel Carrier Unit
Logarithmic antenna gain of a transmitted or received signal
"Decibel Referred to 1mw" is a 'Logarithmic Dimensionless Ratio' expressed as $dBm$.
DeciBel Referred to 1mw
Logarithmic unit of sound pressure level with frequency weighting Z (ZERO or linear weighting)
DeciCoulomb
0.0001-fold of the SI base unit kilogram
DeciGram
DeciLitre
0.1-fold of the unit of the volume litre divided by the 0.001-fold of the SI base unit kilogram
DeciLitre per Gram
DeciMeter
DeciMetre
0.1-fold of the power of the SI base unit metre with the exponent 2
Square DeciMeter
Square DeciMetre
0.1-fold of the power of the SI base unit metre with the exponent 3
Cubic DeciMeter
Cubic DeciMetre
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time day
Cubic DeciMeter per Day
Cubic DeciMetre per Day
0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit hour
Cubic DeciMeter per Hour
Cubic DeciMetre per Hour
0.001-fold of the power of the SI base unit meter by exponent 3 divided by the SI based unit kilogramm
volume ratio consisting of the 0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
Cubic DeciMeter per Cubic Meter
Cubic DeciMetre per Cubic Metre
0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time minute
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time minute
Cubic DeciMeter per Minute
Cubic DeciMetre per Minute
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the SI base unit mol
Cubic DeciMeter per Mole
Cubic DeciMetre per Mole
0,001-fold of the power of the SI base unit metre with the exponent 3 divided by the unit for time second
Cubic DeciMeter per Second
Cubic DeciMetre per Second
DeciNewton
0.1-fold of the product of the derived SI unit joule and the SI base unit metre
DeciNewton Meter
DeciNewton Metre
DeciSiemens
DeciSiemens per Meter
DeciSiemens per Metre
"Decisecond" is an SI unit for 'Time' expressed as $ds$.
DeciSecond
DeciTonne
Metric DeciTon
$\textit{Elementary Charge}$, usually denoted as $e$, is the electric charge carried by a single proton, or equivalently, the negation (opposite) of the electric charge carried by a single electron. This elementary charge is a fundamental physical constant. To avoid confusion over its sign, e is sometimes called the elementary positive charge. This charge has a measured value of approximately $1.602176634 \times 10^{-19} coulombs$. In the cgs system, $e$ is $4.80320471257026372 \times 10^{-10} statcoulombs$.
unit to express the catalytic activity of a specified chemical reaction
An erg is the unit of energy and mechanical work in the centimetre-gram-second (CGS) system of units, symbol 'erg'. Its name is derived from the Greek ergon, meaning 'work'. An erg is the amount of work done by a force of one dyne exerted for a distance of one centimeter. In the CGS base units, it is equal to one gram centimeter-squared per second-squared ($g \cdot cm^2/s^2$). It is thus equal to $10^{-7}$ joules or 100 nanojoules in SI units. $1 erg = 10^{-7} J = 100 nJ$, $1 erg = 624.15 GeV = 6.2415 \times 10^{11} eV$, $1 erg = 1 dyne\cdot cm = 1 g \cdot cm^2/s^2$.
Erg
Erg per CentiMeter
Erg per CentiMetre
Derived CGS unit erg divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Erg per Square CentiMeter
Erg per Square CentiMetre
"Erg per Square Centimeter Second" is a C.G.S System unit for 'Power Per Area' expressed as $erg/(cm^{2}-s)$.
Erg per Square CentiMeter Second
Erg per Square CentiMetre Second
Erg per Cubic CentiMeter
Erg per Cubic CentiMetre
Erg per Gram
Erg per Gram Second
"Erg per Second" is a C.G.S System unit for 'Power' expressed as $erg/s$.
Erg per Second
Erg Second
The "Erlang" is a dimensionless unit that is used in telephony as a measure of offered load or carried load on service-providing elements such as telephone circuits or telephone switching equipment.
Erlang
An electron volt (eV) is the energy that an electron gains when it travels through a potential of one volt. You can imagine that the electron starts at the negative plate of a parallel plate capacitor and accelerates to the positive plate, which is at one volt higher potential. Numerically $1 eV$ approximates $1.6x10^{-19} joules$, where $1 joule$ is $6.2x10^{18} eV$. For example, it would take $6.2x10^{20} eV/sec$ to light a 100 watt light bulb.
Electron Volt
product of the unit electronvolt and the power of the SI base unit metre with the exponent 2
product of the unit electronvolt and the power of the SI base unit metre with the exponent 2 divided by the SI base unit kilogram
unit electronvolt divided by the unit angstrom
Electronvolt per Angstrom
$\textit{Electron Volt per Kelvin}$ is a unit for 'Heat Capacity' expressed as $ev/K$.
Electron Volt per Kelvin
unit electronvolt divided by the SI base unit metre
Electronvolt per Meter
Electronvolt per Metre
The unit $\textit{Electron Volt per Tesla}$ is a unit for $\textit{Magnetic Dipole Moment}$ expressed as $eV T^{-1}$.
Electron Volt per Tesla
"Electron Volt Second" is a unit for 'Angular Momentum' expressed as $eV s$.
Electron Volt Second
The $\textit{Hartree}$ (symbol: $E_h$ or $Ha$), also known as the $\text{Hartree\,Energy}$, is the atomic unit of energy. The hartree energy is equal to the absolute value of the electric potential energy of the hydrogen atom in its ground state. The energy of the electron in an H-atom in its ground state is $-E_H$, where $E_H= 2 R_\infty \cdot hc_0$. The 2006 CODATA recommended value was $E_H = 4.35974394(22) \times 10^{-18} J = 27.21138386(68) eV$. Definition: $E_H= \frac{e^2}{4\pi \epsilon_0 a_0 }$ where, $e$ is the elementary charge, $\epsilon_0$ is the electric constant, and $a_0$ is the Bohr radius.'
Hartree
Earth mass ($M_{\oplus}$) is the unit of mass equal to that of the Earth. In SI Units, $1 M_{\oplus} = 5.9722 \times 10^{24} kg$. Earth mass is often used to describe masses of rocky terrestrial planets. The four terrestrial planets of the Solar System, Mercury, Venus, Earth, and Mars, have masses of 0.055, 0.815, 1.000, and 0.107 Earth masses respectively.
One Earth mass can be converted to related units: 81.3 Lunar mass (ML) 0.00315 Jupiter mass (MJ) (Jupiter has 317.83 Earth masses)[1] 0.0105 Saturn mass (Saturn has 95.16 Earth masses)[3] 0.0583 Neptune mass (Neptune has 17.147 Earth masses)[4] 0.000 003 003 Solar mass ($M_{\odot}$) (The Sun has 332946 Earth masses)
Earth Mass
1,000,000,000,000,000,000-fold of the unit bit divided by the SI base unit second
The exabyte is a multiple of the unit byte for digital information. The prefix exa means 10^18 in the International System of Units (SI), so ExaByte is 10^18 Bytes.
ExaByte
ExaCoulomb
1 000 000 000 000 000 000-fold of the derived SI unit joule
1,000,000,000,000,000,000-fold of the derived SI unit joule
ExaJoule
1,000,000,000,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
1,000,000,000,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
1,152,921,504,606,846,976-fold of the unit bit divided by the SI base unit metre
1,152,921,504,606,846,976-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,152,921,504,606,846,976-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
The exbibyte is a multiple of the unit byte for digital information. The prefix exbi means 1024^6
Exbibyte
"Faraday" is a unit for 'Electric Charge' expressed as $F$.
Faraday
"Fractional area" is a unit for 'Solid Angle' expressed as $fa$.
Fractional Area
The SI unit of electric capacitance. Very early in the study of electricity scientists discovered that a pair of conductors separated by an insulator can store a much larger charge than an isolated conductor can store. The better the insulator, the larger the charge that the conductors can hold. This property of a circuit is called capacitance, and it is measured in farads. One farad is defined as the ability to store one coulomb of charge per volt of potential difference between the two conductors. This is a natural definition, but the unit it defines is very large. In practical circuits, capacitance is often measured in microfarads, nanofarads, or sometimes even in picofarads (10-12 farad, or trillionths of a farad). The unit is named for the British physicist Michael Faraday (1791-1867), who was known for his work in electricity and electrochemistry.
Farad
Faradio
Faradium
Φαράντ
Фарад
Фарада
פאראד
فاراد
फैराड
ファラド
法拉
SI derived unit farad divided by the 1 000-fold of the SI base unit metre
Farad per KiloMeter
Farad per KiloMetre
Farad Per Meter ($F/m$) is a unit in the category of Electric permittivity. It is also known as farad/meter. This unit is commonly used in the SI unit system. Farad Per Meter has a dimension of M-1L-3T4I2 where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Farad Al Metro
Farad Bölü Metre
Farad Je Meter
Farad Na Meter
Farad Na Metr
Farad Par Mètre
Farad Pe Metru
Farad Por Metro
Farad per Meter
Farad per Metre
Faradio Por Metro
Faradů Na Metr
Фарада На Метр
فاراد بر متر
प्रति मीटर फैराड
ファラド毎メートル
法拉每米
An abfarad is an obsolete electromagnetic (CGS) unit of capacitance equal to $10^{9}$ farads (1,000,000,000 F or 1 GF). The absolute farad of the e.m.u. system, for a steady current identically $abC/abV$, and identically reciprocal abdaraf. 1 abF = 1 GF.
Abfarad
The absolute dielectric constant of free space is defined as the ratio of displacement to the electric field intensity. The unit of measure is the abfarad per centimeter, a derived CGS unit.
Abfarad per CentiMeter
Abfarad per CentiMetre
The $\text{Statfarad (statF)}$ is a unit in the category of Electric capacitance. It is also known as $statfarads$. This unit is commonly used in the cgs unit system. $Statfarad$ has a dimension of $M^{-1}L^{-2}T^4I^2$ where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. It can be converted to the corresponding standard SI unit F by multiplying its value by a factor of 1.11265E-012.
Statfarad
A fathom = 1.8288 meters, is a unit of length in the imperial and the U.S. customary systems, used especially for measuring the depth of water. There are two yards in an imperial or U.S. fathom. Originally based on the distance between the man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard. Abbreviations: f, fath, fm, fth, fthm.
Fathom
The board-foot is a specialized unit of measure for the volume of lumber in the United States and Canada. It is the volume of a one-foot length of a board one foot wide and one inch thick. Board-foot can be abbreviated FBM (for 'foot, board measure'), BDFT, or BF. Thousand board-feet can be abbreviated as MFBM, MBFT or MBF.
Board Foot
"Foot Candle" is a unit for 'Luminous Flux Per Area' expressed as $fc$.
Foot Candle
Flight
Floating point operations divided by the SI base unit second
The $\textit{fermi}$, or $\textit{femtometer}$ (other spelling $femtometre$, symbol $fm$) is an SI unit of length equal to $10^{-15} metre$. This distance is often encountered in nuclear physics as a characteristic of this scale. The symbol for the fermi is also $fm$.
Fermi
"Franklin" is a unit for 'Electric Charge' expressed as $Fr$.
Franklin
Fraction is a unit for 'Dimensionless Ratio' expressed as the value of the ratio itself.
Fraction
"Frame per Second" is a unit for 'Video Frame Rate' expressed as $fps$.
Frame per Second
A foot is a unit of length defined as being 0.3048 m exactly and used in the imperial system of units and United States customary units. It is subdivided into 12 inches. The foot is still officially used in Canada and still commonly used in the United Kingdom, although the latter has partially metricated its units of measurement.
Foot
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
"Foot Pound Force" is an Imperial unit for 'Energy And Work' expressed as $ft-lbf$.
Foot Pound Force
"Foot Pound per Square Foot" is an Imperial unit for 'Energy Per Area' expressed as $ft-lbf/ft^{2}$.
Foot Pound per Square Foot
"Foot Pound Force per Square Foot Second" is an Imperial unit for 'Power Per Area' expressed as $ft \cdot lbf/(ft^2 \cdot s)$.
Foot Pound Force per Square Foot Second
"Foot Pound Force per Hour" is an Imperial unit for 'Power' expressed as $ft-lbf/h$.
Foot Pound Force per Hour
"Foot Pound Force per Square Meter" is a unit for 'Energy Per Area' expressed as $ft-lbf/m^{2}$.
Foot Pound Force per Square Meter
Foot Pound Force per Square Metre
"Foot Pound Force per Minute" is an Imperial unit for 'Power' expressed as $ft-lbf/min$.
Foot Pound Force per Minute
"Foot Pound Force per Second" is an Imperial unit for 'Power' expressed as $ft-lbf/s$.
Foot Pound Force per Second
"Foot Pound Force Second" is a unit for 'Angular Momentum' expressed as $lbf / s$.
Foot Pound Force Second
"Foot Poundal" is an Imperial unit for 'Energy And Work' expressed as $ft-pdl$.
Foot Poundal
"Foot per Day" is an Imperial unit for 'Linear Velocity' expressed as $ft/d$.
Foot per Day
unit foot as a linear measure according to the Anglo-American and the Imperial system of units divided by the unit for temperature degree Fahrenheit
Foot per Degree Fahrenheit
"Foot per Hour" is an Imperial unit for 'Linear Velocity' expressed as $ft/h$.
Foot per Hour
"Foot per Minute" is an Imperial unit for 'Linear Velocity' expressed as $ft/min$.
Foot per Minute
unit foot as a linear measure according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force square inch)
$\textit{foot per second}$ (plural $\textit{feet per second}$) is a unit of both speed (scalar) and velocity (vector quantity, which includes direction). It expresses the distance in feet ($ft$) traveled or displaced, divided by the time in seconds ($s$, or $sec$). The corresponding unit in the International System of Units (SI) is the $\textit{metre per second}$. Abbreviations include $ft/s$, $ft/sec$ and $fps$, and the rarely used scientific notation $ft\,s$.
Foot per Second
unit foot as a linear measure according to the Anglo-American and the Imperial system of units divided by the product of the SI base unit second and the traditional unit degree Fahrenheit
quotient of the unit foot according to the Anglo-American and the Imperial system of units and the SI base unit second divided by the composed unit for pressure (pound-force per square inch)
$\textit{Foot per Square Second}$ is an Imperial unit for $\textit{Linear Acceleration}$ expressed as $ft/s^2$.
Foot per Square Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
The square foot (plural square feet; abbreviated $ft^2$ or $sq \, ft$) is an imperial unit and U.S. customary unit of area, used mainly in the United States, Canada, United Kingdom, Hong Kong, Bangladesh, India, Pakistan and Afghanistan. It is defined as the area of a square with sides of 1 foot in length.
Square Foot
$\textit{Square Foot Degree Fahrenheit}$ is an Imperial unit for 'Area Temperature' expressed as $ft^{2}-degF$.
Square Foot Degree Fahrenheit
$\textit{Square Foot Hour Degree Fahrenheit}$ is an Imperial unit for 'Area Time Temperature' expressed as $ft^{2}-h-degF$.
Square Foot Hour Degree Fahrenheit
$\textit{Square Foot Hour Degree Fahrenheit per BTU}$ is an Imperial unit for 'Thermal Insulance' expressed as $(degF-h-ft^{2})/Btu$.
Square Foot Hour Degree Fahrenheit per Btu
Square Foot per Btu Inch
$\textit{Square Foot per Hour}$ is an Imperial unit for $\textit{Kinematic Viscosity}$ and $\textit{Thermal Diffusivity}$ expressed as $ft^{2}/hr$.
Square Foot per Hour
"Square Foot per Second" is an Imperial unit for 'Kinematic Viscosity' expressed as $ft^{2}/s$.
Square Foot per Second
$\textit{Square Foot Second Degree Fahrenheit}$ is an Imperial unit for 'Area Time Temperature' expressed as $ft^{2}\cdot s\cdot degF$.
Square Foot Second Degree Fahrenheit
The cubic foot is an Imperial and US customary unit of volume, used in the United States and the United Kingdom. It is defined as the volume of a cube with sides of one foot (0.3048 m) in length. To calculate cubic feet multiply length X width X height.
Cubic Foot
power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for time day
Cubic Foot per Day
power of the unit foot as a linear measure according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for temperature degree Fahrenheit
Cubic Foot per Degree Fahrenheit
power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit hour
Cubic Foot per Hour
power of the unit foot according to the Anglo-American and Imperial system of units by exponent 3 divided by the unit avoirdupois pound according to the avoirdupois unit system
"Cubic Foot per Minute" is an Imperial unit for 'Volume Per Unit Time' expressed as $ft^3/min$.
Cubic Foot per Minute
unit of the volume flow rate according to the Anglio-American and imperial system of units cubic foot per minute related to the transfer area according to the Anglian American and Imperial system of units square foot
Cubic Foot per Minute Square Foot
power of the unit foot as a linear measure according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the composed unit for pressure (pound-force per square inch)
"Cubic Foot per Second" is an Imperial unit for $ \textit{Volume Per Unit Time}$ expressed as $ft^3/s$.
Cubic Foot per Second
power of the unit foot according to the Anglo-American and Imperial system of units by exponent 4
"Foot of Water" is a unit for 'Force Per Area' expressed as $ftH2O$.
Foot of Water
non SI-conforming unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 ftH₂O is equivalent to the static pressure generated by a head of water at a temperature 39.2°F with a height of 1 foot
A non-SI-conforming unit of pressure, at which 1 ftHg corresponds to the static pressure, which is excited by a mercury column with a height of 1 foot
Foot of Mercury
The U.S. Survey Foot was officially deprecated on December 31, 2022. For more information see Federal Register (October 5, 2020, 85 FR 62698, p. 62698)
Us Survey Foot
A furlong is a measure of distance in imperial units and U.S. customary units equal to one-eighth of a mile, equivalent to 220 yards, 660 feet, 40 rods, or 10 chains. The exact value of the furlong varies slightly among English-speaking countries. Five furlongs are approximately 1 kilometre (1.0058 km is a closer approximation). Since the original definition of the metre was one-quarter of one ten-millionth of the circumference of the Earth (along the great circle coincident with the meridian of longitude passing through Paris), the circumference of the Earth is about 40,000 km or about 200,000 furlongs.
Check if this is US-Survey or International Customary definition (multiplier)
Furlong
Long Furlong
0.000000000000001-fold of the unit ampere
FemtoCoulomb
0.000000000000001-fold of the unit farad
FemtoGram
One part per 10**18 by mass of the measurand in the matrix.
FemtoGrams per KiloGram
One 10**18 part of the SI standard unit of mass of the measurand per litre volume of matrix..
FemtoGrams per Litre
0,000 000 000 000 001-fold of the derived SI unit joule
0.000000000000001-fold of the derived SI unit joule
FemtoJoule
0.000000000000001-fold of the unit litre
FemtoLitre
The $\textit{femtometre}$ is an SI unit of length equal to $10^{-15} meter$. This distance can also be called $\textit{fermi}$ and was so named in honour of Enrico Fermi. It is often encountered in nuclear physics as a characteristic of this scale. The symbol for the fermi is also $fm$.
FemtoMeter
FemtoMetre
FemtoMole
A 10**15 part quantity of substance of the measurand per kilogram mass of matrix.
FemtoMoles per KiloGram
A 10**18 part quantity of substance of the measurand per litre volume of matrix.
FemtoMoles per Litre
0.000000000000001-fold of the SI base unit second
FemtoSecond
0.000000000000001-fold of the SI derived unit volt
"Gravity" is a unit for 'Linear Acceleration' expressed as $G$.
Gravity
The $\textit{Galileo}$ is the unit of acceleration of free fall used extensively in the science of gravimetry. The Galileo is defined as $1 \textit{centimeter per square second}$ ($1 cm/s^2$). Unfortunately, the Galileo is often denoted with the symbol Gal, not to be confused with the Gallon that also uses the same symbol.
CGS unit of acceleration called gal with the definition: 1 Gal = 1 cm/s
Galileo
A British gallon used in liquid and dry measurement approximately 1.2 U.S. gallons, or 4.54 liters
Imperial Gallon
unit of the volume for fluids according to the Imperial system of units
Gallon (UK)
unit gallon (UK dry or liq.) according to the Imperial system of units divided by the SI unit day
Gallon (UK) per Day
unit gallon (UK dry or Liq.) according to the Imperial system of units divided by the SI unit hour
Gallon (UK) per Hour
unit gallon (UK dry or liq.) according to the Imperial system of units divided by the SI unit minute
Gallon (UK) per Minute
unit gallon (UK dry or liq.) according to the Imperial system of units divided by the SI base unit second
Gallon (UK) per Second
"US Gallon" is a unit for 'Liquid Volume' expressed as $galUS$.
Us Gallon
"US Gallon per Day" is a unit for 'Volume Per Unit Time' expressed as $gal/d$.
Us Gallon per Day
unit gallon (US, liq.) according to the Anglo-American system of units divided by the SI unit hour
Gallon (US) per Hour
"US Gallon per Minute" is a C.G.S System unit for 'Volume Per Unit Time' expressed as $gal/min$.
Us Gallon per Minute
unit gallon (US, liq.) according to the Anglo-American system of units divided by the SI base unit second
Gallon (us Liquid) per Second
"Dry Gallon US" is a unit for 'Dry Volume' expressed as $dry_gal$.
Dry Gallon Us
"Gamma" is a C.G.S System unit for 'Magnetic Field'.
Gamma
unit for the diameter of thin tubes in the medical technology (e.g. catheter) and telecommunications engineering (e.g. fiberglasses).
French Gauge
Gauss
unit for the diameter of urological instruments and catheters for different purposes corresponding to: 1 Ch = 0,333 333 333 10 ⁻ ³ m
The fundamental unit of magnetomotive force ($mmf$) in electromagnetic units is called a Gilbert. It is the $mmf$ which will produce a magnetic field strength of one Gauss (Maxwell per Square Centimeter) in a path one centimeter long.
Gilbert
unit of the volume for fluids according to the Imperial system of units (1/32 Imperial Gallon)
Gill (UK)
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the unit for time day
Gill (UK) per Day
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the unit for time hour
Gill (UK) per Hour
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the unit for time minute
Gill (UK) per Minute
unit of the volume gill (UK) for fluids according to the Imperial system of units divided by the SI base unit second
Gill (UK) per Second
unit of the volume according the Anglo-American system of units (1/32 US Gallon)
Gill (US)
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the unit for time day
Gill (US) per Day
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the unit for time hour
Gill (US) per Hour
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the unit for time minute
Gill (US) per Minute
unit of the volume gill (US) for fluids according to the Anglo-American system of units divided by the SI base unit second
Gill (US) per Second
A unit of mass in the metric system. The name comes from the Greek gramma, a small weight identified in later Roman and Byzantine times with the Latin scripulum or scruple (the English scruple is equal to about 1.3 grams). The gram was originally defined to be the mass of one cubic centimeter of pure water, but to provide precise standards it was necessary to construct physical objects of specified mass. One gram is now defined to be 1/1000 of the mass of the standard kilogram, a platinum-iridium bar carefully guarded by the International Bureau of Weights and Measures in Paris for more than a century. (The kilogram, rather than the gram, is considered the base unit of mass in the SI.) The gram is a small mass, equal to about 15.432 grains or 0.035 273 966 ounce.
Gram
product of the 0.001-fold of the SI base unit kilogram and the 0.01-fold of the SI base unit metre divided by the SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per litre and unit litre per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
Gram Hour per Cubic Metre Cubic CentiMetre
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time hour
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time hour
Gram Hour per Power of Metre with the Exponent 6
quotient of the 0.001-fold of the SI base unit kilogram per litre and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per litre and unit litre per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
Gram Minute per Cubic Metre Cubic CentiMetre
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time minute
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time minute
Gram Minute per Power of Metre with the Exponent 6
unit of the imbalance as product of the 0.001-fold of the SI base unit kilogram and the 0.001-fold of the SI base unit metre
Gram MilliMeter
Gram MilliMetre
0.001-fold of the SI base unit kilogram divided by the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre and the unit bar
unit of the dynamic viscosity as a quotient of the 0.001-fold of the SI base unit kilogram divided by the 0.01-fold of the SI base unit metre and SI base unit second
0,001-fold of the SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre and exponent 2
Gram per Square CentiMeter
Gram per Square CentiMetre
A rate of change of 0.001 of the SI unit of mass over 0.00001 of the SI unit of area in a period of an average calendar year (365.25 days)
Grams per Square CentiMetre Year
0,001-fold of the SI base unit kilogram divided by the 0.000 001-fold of the power of the SI base unit metre with the exponent 3
0.001-fold of the SI base unit kilogram divided by the 0.000001-fold of the power of the SI base unit metre with the exponent 3
Gram per Cubic CentiMeter
Gram per Cubic CentiMetre
0.001-fold of the SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
0,001-fold of the SI base unit kilogram divided by the unit day
Gram per Day
0.001-fold of the SI base unit kilogram divided by the product out of the unit day and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the unit day and the SI base unit kelvin
$\textit{Gram Degree Celsius}$ is a C.G.S System unit for 'Mass Temperature' expressed as $g \cdot degC$.
Gram Degree Celsius
A derived unit for amount-of-substance concentration measured in g/dL.
Grams per DeciLitre
0,001-fold of the SI base unit kilogram divided by the 0.001-fold of the power of the SI base unit metre with the exponent 3
Gram per Cubic DeciMeter
Gram per Cubic DeciMetre
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
mass ratio consisting of the 0.001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram.
Gram per Gram
Gram Per Hectare is a unit of mass per area. Gram Per Hectare (mg/ha) has a dimension of ML-3 where M is mass, and L is length. It can be converted to the corresponding standard SI unit kg/m2 by multiplying its value by a factor of 0.0000001.
Gram per Hectare
0,001-fold of the SI base unit kilogram divided by the unit hour
Gram per Hour
0.001-fold of the SI base unit kilogram divided by the product out of the unit hour and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the unit hour and the SI base unit kelvin
0.001-fold of the SI base unit kilogram divided by the SI derived unit hertz
0,001-fold of the SI base unit kilogram divided by 0.1-fold of the SI base unit kilogram
Gram per HectoGram
0.001-fold of the SI base unit kilogram divided by the SI base unit kelvin
0,001 fold of the SI base unit kilogram divided by the SI base unit kilogram
Gram per KiloGram
0,001-fold of the SI base unit kilogram divided by the 1000-fold of the SI base unit metre
Gram per KiloMeter
Gram per KiloMetre
0,001-fold of the SI base unit kilogram divided by the unit litre
Gram per Liter
Gram per Litre
0.001-fold of the SI base unit kilogram divided by the product out of the unit litre and the unit bar
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per litre and and the 0.01-fold of the CGS unit of the dynamic viscosity poise
0.001-fold of the SI base unit kilogram divided by the product out of the unit litre and the SI base unit kelvin
quotient of the 0.001-fold of the SI base unit kilogram per litre and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per litre and the CGS unit of the dynamic viscosity poise
0,001-fold of the SI base unit kilogram divided by the SI base unit metre
Gram per Meter
Gram per Metre
0,001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 2
Gram per Square Meter
Gram per Square Metre
A metric unit of volume over time indicating the amount generated across one square meter over a day.
Grams per Square Meter Day
Grams per Square Metre Day
0.0001-fold of the SI base unit kilogram divided by the SI base unit meter with the exponent 2 over a period of 1 hour
Grams per Square Meter per Hour
A metric unit of volume over time indicating the amount generated across one square meter over a year (365.25 days).
A metric unit of volume over time indicating the amount generated across one square meter over a year.
Grams per Square Meter per Year
Grams per Square Metre per Year
0,001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
Gram per Cubic Meter
Gram per Cubic Metre
0.001-fold of the SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the SI base unit bar
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.01-fold of the CGS unit of the dynamic viscosity poise
0.001-fold of the SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the CGS unit of the dynamic viscosity poise
0,001-fold of the SI base unit kilogram divided by the unit minute
Gram per Minute
0.001-fold the SI base unit kilogram divided by the product out of the unit minute and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the unit minute and the SI base unit kelvin
0.01-fold of the SI base unit kilogram divided by the SI base unit mol
Gram per Mole
0,001-fold of the SI base unit kilogram divided by the 0.001-fold of the unit litre
Gram per MilliLitre
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the unit litre and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the unit litre and the SI base unit kelvin
0,001-fold of the SI base unit kilogram divided by the 0.001-fold the SI base unit meter
Gram per MilliMeter
Gram per MilliMetre
0.001-fold of the SI base unit kilogram divided by the product out of the 0.001-fold of the unit meter and the unit bar
Gram per MilliMeter Bar
Gram per MilliMetre Bar
0.001-fold of the SI base unit kilogram divided by the 0.000001-fold of the power of the SI base unit meter by exponent 2
0,001fold of the SI base unit kilogram divided by the SI base unit second
Gram per Second
0.001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the unit bar
0.001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the SI base unit kelvin
quotient of the 0.001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per litre and unit litre per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
Gram Second per Cubic Metre Cubic CentiMetre
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per SI base unit second
quotient of the 0.001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per SI base unit second
Gram Second per Power of Metre with the Exponent 6
A metric unit of volume over time indicating the amount generated across one square meter over a day. Used to express productivity of an ecosystem.
Grams Carbon per Square Meter Day
Grams Carbon per Square Metre Day
"Gram Force" is a unit for 'Force' expressed as $gf$.
Gram Force
Gram Force per Square CentiMeter
Gram Force per Square CentiMetre
A metric unit of volume over time indicating the amount of Nitrogen generated across one square meter over a day. Used to express productivity of an ecosystem.
Grams Nitrogen per Square Meter Day
Grams Nitrogen per Square Metre Day
"Gon" is a C.G.S System unit for 'Plane Angle' expressed as $gon$.
Gon
the tangent of an angle of inclination multiplied by 100
Grade
"Grad" is a unit for 'Plane Angle' expressed as $grad$.
Grad
A grain is a unit of measurement of mass that is nominally based upon the mass of a single seed of a cereal. The grain is the only unit of mass measure common to the three traditional English mass and weight systems; the obsolete Tower grain was, by definition, exactly /64 of a troy grain. Since 1958, the grain or troy grain measure has been defined in terms of units of mass in the International System of Units as precisely 64.79891 milligrams. Thus, $1 gram \approx 15.4323584 grains$. There are precisely 7,000 grains per avoirdupois pound in the imperial and U.S. customary units, and 5,760 grains in the Troy pound.
Grain
"Grain per Gallon" is an Imperial unit for 'Density' expressed as $gr/gal$.
Grain per Gallon
unit of the density according to the Anglo-American system of units
Grain per Gallon (US)
Grains per Cubic Meter
Grains per Cubic Metre
The SI unit of radiation dose. Radiation carries energy, and when it is absorbed by matter the matter receives this energy. The dose is the amount of energy deposited per unit of mass. One gray is defined to be the dose of one joule of energy absorbed per kilogram of matter, or 100 rad. The unit is named for the British physician L. Harold Gray (1905-1965), an authority on the use of radiation in the treatment of cancer.
Graium
Gray
Grej
Γκρέι
Грей
Грэй
גריי
جراي; غراي
گری
ग्रेय
グレイ
戈瑞
SI derived unit gray divided by the unit hour
SI derived unit gray divided by the unit minute
"Gray per Second" is a unit for 'Absorbed Dose Rate' expressed as $Gy/s$.
Gray per Second
The formula for calculating GT is given by ${ GT=V\times (0.2+0.02\times \log _{10}(V))}$
${ GT=V\times (0.2+0.02\times \log _{10}(V))}$ where V is measured in cubic meters.
Gross tonnage (GT, G.T. or gt) is a nonlinear measure of a ship's overall internal volume. Gross tonnage is different from gross register tonnage. Gross tonnage is used to determine things such as a ship's manning regulations, safety rules, registration fees, and port dues, whereas the older gross register tonnage is a measure of the volume of only certain enclosed spaces.
Gross Tonnage
1,073,741,824-fold of the unit bit divided by the SI base unit metre
1,073,741,824-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,073,741,824-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
The gibibyte is a multiple of the unit byte for digital information storage. The prefix gibi means 1024^3
Gibibyte
1,000,000,000-fold of the unit bit divided by the SI base unit metre
A gigabit per second (Gbit/s or Gb/s) is a unit of data transfer rate equal to 1,000,000,000 bits per second.
GigaBit per Second
1,000,000,000-fold of the derived SI unit becquerel
1 000 000 000-fold of the derived SI unit becquerel
GigaBecquerel
The gigabyte is a multiple of the unit byte for digital information storage. The prefix giga means $10^9$ in the International System of Units (SI), therefore 1 gigabyte is $1,000,000,000 \; bytes$. The unit symbol for the gigabyte is $GB$ or $Gbyte$, but not $Gb$ (lower case b) which is typically used for the gigabit. Historically, the term has also been used in some fields of computer science and information technology to denote the $gibibyte$, or $1073741824 \; bytes$.
GigaByte
1,000,000,000-fold of the unit byte divided by the SI base unit second
A gigabase (abbreviated Gb, or Gbp for gigabase pairs.) is a unit of measurement used to help designate the length of DNA. One gigabase is equal to 1 billion bases.
GigaBase Pair
GigaCoulomb
1,000,000,000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
1 000 000 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
GigaCoulomb per Cubic Meter
GigaCoulomb per Cubic Metre
"Giga Electron Volt" is a unit for 'Energy And Work' expressed as $GeV$.
Giga Electron Volt
1,000,000,000-fold of the unit floating point operations divided by the SI base unit second
The hertz (symbol Hz) is the SI unit of frequency defined as the number of cycles per second of a periodic phenomenon. A GigaHertz is $10^{9} hz$.
GigaHertz
product of the 1,000,000,000-fold of the SI derived unit hertz and the SI base unit metre
product of the 1 000 000 000-fold of the SI derived unit hertz and the SI base unit metre
GigaHertz Meter
GigaHertz Metre
1,000,000,000-fold of the SI derived unit joule
1 000 000 000-fold of the SI derived unit joule
GigaJoule
SI derived unit Gigajoule divided by the 3600 times the SI base unit second
GigaJoule per Hour
Gigajoule Per Square Meter ($J/m^2$) is a unit in the category of Energy density. It is also known as Gigajoules per square meter, Gigajoule per square metre, Gigajoule/square meter, Gigajoule/square metre.
GigaJoule per Square Meter
GigaJoule per Square Metre
1,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
1,000,000,000-fold of the SI derived unit newton divided by the SI base unit metre to the power two
1,000,000,000-fold of the SI derived unit ohm
1 000 000 000-fold of the SI derived unit ohm
GigaOhm
1,000,000,000-fold of the product out of the SI derived unit ohm and the SI unit metre
1,000,000,000-fold of the SI derived unit ohm divided by the SI unit metre
1,000,000,000-fold of the SI derived unit pascal
1 000 000 000-fold of the SI derived unit pascal
GigaPascal
GigaPascal Cubed CentiMeter per Gram
GigaPascal Cubed CentiMetre per Gram
1,000,000,000-fold of the SI derived unit volt
1,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000001 of the unit volt ampere reactive
1,000,000,000-fold of the SI derived unit watt
1 000 000 000-fold of the SI derived unit watt
GigaWatt
A $\textit{Gigawatt Hour}$ is the 1,000,000,000-fold of the product of the SI derived unit watt and the unit hour.
1 000 000 000-fold of the product of the SI derived unit watt and the unit hour
GigaWatt Hour
The $gauss$, abbreviated as $G$, is the cgs unit of measurement of a magnetic field $B$, which is also known as the "magnetic flux density" or the "magnetic induction". One gauss is defined as one maxwell per square centimeter; it equals $10^{-4} tesla$ (or $100 micro T$). The Gauss is identical to maxwells per square centimetre; technically defined in a three-dimensional system, it corresponds in the SI, with its extra base unit the ampere. The gauss is quite small by earthly standards, 1 Gs being only about four times Earth's flux density, but it is subdivided, with $1 gauss = 105 gamma$. This unit of magnetic induction is also known as the $\textit{abtesla}$.
The unit $\textit{Henry}$ is the SI unit of electric inductance. A changing magnetic field induces an electric current in a loop of wire (or in a coil of many loops) located in the field. Although the induced voltage depends only on the rate at which the magnetic flux changes, measured in webers per second, the amount of the current depends also on the physical properties of the coil. A coil with an inductance of one henry requires a flux of one weber for each ampere of induced current. If, on the other hand, it is the current which changes, then the induced field will generate a potential difference within the coil: if the inductance is one henry a current change of one ampere per second generates a potential difference of one volt. The henry is a large unit; inductances in practical circuits are measured in millihenrys (mH) or microhenrys (u03bc H). The unit is named for the American physicist Joseph Henry (1797-1878), one of several scientists who discovered independently how magnetic fields can be used to generate alternating currents. A $\textit{Henry}$ is defined as: $$\text{H} \; \equiv \; \text{henry}\; \equiv\; \frac{\text{Wb}}{\text{A}}\; \equiv\; \frac{\text{weber}}{\text{amp}}\; \equiv\ \frac{\text{V}\cdot\text{s}}{\text{A}}\; \equiv\; \frac{\text{volt} \cdot \text{second}}{\text{amp}}\; \equiv\ \Omega\cdot\text{s}\; \equiv\; \text{ohm.second}$$
Henr
Henrio
Henrium
Henry
Χένρι
Генри
Хенри
הנרי
هنري
هنری
हेनरी
ヘンリー
亨利
SI derived unit henry divided by the 1 000-fold of the SI derived unit ohm
Henry per KiloOhm
The henry per meter (symbolized $H/m$) is the unit of magnetic permeability in the International System of Units ( SI ). Reduced to base units in SI, $1\,H/m$ is the equivalent of one kilogram meter per square second per square ampere.
Henry per Meter
Henry per Metre
SI derived unit henry divided by the SI derived unit ohm
Henry per Ohm
The customary metric unit of land area, equal to 100 ares. One hectare is a square hectometer, that is, the area of a square 100 meters on each side: exactly 10 000 square meters or approximately 107 639.1 square feet, 11 959.9 square yards, or 2.471 054 acres.
Hectare
Hartley
The "Hartley per Second" is a unit of information rate.
Hartley per Second
Horsepower
"Boiler Horsepower" is a unit for 'Power' expressed as $hp_boiler$.
Boiler Horsepower
unit of the power according to the Imperial system of units
Horsepower (brake)
unit of the power according to the Anglo-American system of units
Horsepower (electric)
unit of the mechanical power according to the Anglo-American system of units
Horsepower (metric)
The hour (common symbol: h or h) is a unit of measurement of time. In modern usage, an hour comprises 60 minutes, or 3,600 seconds. It is approximately 1/24 of a mean solar day. An hour in the Universal Coordinated Time (UTC) time standard can include a negative or positive leap second, and may therefore have a duration of 3,599 or 3,601 seconds for adjustment purposes. Although it is not a standard defined by the International System of Units, the hour is a unit accepted for use with SI, represented by the symbol h.
Hour
"Hour Square Foot" is an Imperial unit for 'Area Time' expressed as $hr-ft^{2}$.
Hour Square Foot
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
Hours per year, used for the time an industrial facility or installation is active during one year
Hours per Year
Uur per Jaar
Sidereal time is a time-keeping system astronomers use to keep track of the direction to point their telescopes to view a given star in the night sky. A mean sidereal day is about 23 h 56 m 4.1 s in length. However, due to variations in the rotation rate of the Earth, the rate of an ideal sidereal clock deviates from any simple multiple of a civil clock. In practice, the difference is kept track of by the difference UTC-UT1, which is measured by radio telescopes and kept on file and available to the public at the IERS and at the United States Naval Observatory. A Sidereal Hour is $1/24^{th}$ of a Sidereal Day. A mean sidereal day is 23 hours, 56 minutes, 4.0916 seconds (23.9344699 hours or 0.99726958 mean solar days), the time it takes Earth to make one rotation relative to the vernal equinox. (Due to nutation, an actual sidereal day is not quite so constant.) The vernal equinox itself precesses slowly westward relative to the fixed stars, completing one revolution in about 26,000 years, so the misnamed sidereal day ("sidereal" is derived from the Latin sidus meaning "star") is 0.0084 seconds shorter than Earth's period of rotation relative to the fixed stars.
Sidereal Hour
Counting unit for a count of one hundred
$\textit{Hertz}$ (symbol $Hz$) is the SI unit of frequency defined as the number of cycles per second of a periodic phenomenon. One of its most common uses is the description of the sine wave, particularly those used in radio and audio applications, such as the frequency of musical tones. The word $\bf{hertz}$ is named for Heinrich Rudolf Hertz, who was the first to conclusively prove the existence of electromagnetic waves.
Herc
Hercio
Hertz
Hertzium
Χερτζ
Герц
Херц
הרץ
هرتز
हर्ट्ज
ヘルツ
赫兹
$\textit{Hertz Metre}$ is the product of the SI derived unit hertz and the SI base unit metre.
product of the SI derived unit hertz and the SI base unit metre
Hertz Meter
Hertz Metre
$\textit{Hertz per Kelvin}$ is a unit for 'Inverse Time Temperature' expressed as $Hz K^{-1}$.
Herc Na Kelwin
Hercio Por Kelvin
Hertz Al Kelvin
Hertz Bölü Kelvin
Hertz Je Kelvin
Hertz Na Kelvin
Hertz Par Kelvin
Hertz Pe Kelvin
Hertz Por Kelvin
Hertz per Kelvin
Герц На Кельвин
هرتز بر کلوین
هرتز لكل كلفن
हर्ट्ज प्रति कैल्विन
ヘルツ毎立方メートル
"Hertz per Tesla" is a unit for 'Electric Charge Per Mass' expressed as $Hz T^{-1}$.
Hertz per Tesla
In the Hertz per Volt standard the frequency of the note is directly related to the voltage. A pitch of a note goes up one octave when its frequency doubles, meaning that the voltage will have to double for every octave rise. Depending on the footage (octave) selected, nominally one volt gives 1000Hz, two volts 2000Hz and so on. In terms of notes, bottom C would be 0.25 volts, the next C up would be 0.5 volts, then 1V, 2V, 4V, 8V for the following octaves. This system was used mainly by Yamaha and Korg.
Hertz per Volt
Abhenry is the centimeter-gram-second electromagnetic unit of inductance, equal to one billionth of a henry.
Abhenry
The $\text{Stathenry (statH)}$ is a unit in the category of Electric inductance. It is also known as $tathenries$. This unit is commonly used in the cgs unit system. $Stathenry$ has a dimension of $ML^2T^{-2}I^{-2}$ where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. It can be converted to the corresponding standard SI unit H by multiplying its value by a factor of $8.987552 \times 10^{11}$.
Stathenry
The Stathenry per Centimeter is a unit of measure for the absolute permeability of free space.
Stathenry per CentiMeter
Stathenry per CentiMetre
A heart beat is a single contraction of the heart muscle, which pumps blood through the circulatory system. The heart rate is the number of heart beats per unit of time, typically measured in beats per minute (bpm). A normal resting heart rate for adults ranges from 60 to 100 beats per minute.
Heart Beat
HectoBar
"HectoCoulomb" is a unit for 'Electric Charge' expressed as $hC$.
HectoCoulomb
HectoGram
HectoLitre
HectoMeter
HectoMetre
Hectopascal is a unit of pressure. 1 Pa is approximately the pressure exerted by a 10-g mass resting on a 1-cm2 area. 1013 hPa = 1 atm. There are 100 pascals in 1 hectopascal.
Hectopascal is commonly used in meteorology to report values for atmospheric pressure. It is equivalent to millibar.
HectoPascal
product out of the 100-fold of the SI derived unit pascal and the unit litre divided by the SI base unit second
HectoPascal Liter per Second
HectoPascal Litre per Second
product out of the 100-fold of the SI unit pascal and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
HectoPascal Cubic Meter per Second
HectoPascal Cubic Metre per Second
100-fold of the SI derived unit pascal divided by the unit bar
HectoPascal per Bar
A change in pressure of one hundred Newtons per square metre (100 Pascals) per hour. Equivalent to a change of one millibar per hour.
HectoPascals per Hour
100-fold of the SI derived unit pascal divided by the SI base unit kelvin
HectoPascal per Kelvin
100-fold of the SI derived unit pascal divided by the SI base unit metre
out of use unit of the mass according to the Imperial system of units
Hundredweight (UK)
Hundredweight (US)
An inch is the name of a unit of length in a number of different systems, including Imperial units, and United States customary units. There are 36 inches in a yard and 12 inches in a foot. Corresponding units of area and volume are the square inch and the cubic inch.
Inch
Unit of work (force multiplied by path) according to the Imperial system of units as a product unit inch multiplied by poundal. Product of the non SI-conform unit of the force poundal and the unit inch according to the Anglo-American and Imperial system of units.
unit of the translation factor for implementation from rotation to linear move according to the Anglo-American and the Imperial system of units
unit inch according to the Anglo-American and the Imperial system of units divided by the unit for temperature degree Fahrenheit
Inch per Degree Fahrenheit
The inch per minute is a unit of speed or velocity. It expresses the distance in inches (in) traveled or displaced, divided by time in minutes (min). The equivalent SI unit is the metre per second.
Inch per Minute
unit inch according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force per square inch)
The inch per second is a unit of speed or velocity. It expresses the distance in inches (in) traveled or displaced, divided by time in seconds (s, or sec). The equivalent SI unit is the metre per second. Abbreviations include in/s, in/sec, ips, and less frequently in s.
Inch per Second
unit inch according to the Anglo-American and the Imperial system of units divided by the product of the SI base unit second and the traditional unit degree Fahrenheit
quotient of the unit inch according to the Anglo-American and the Imperial system of units and the SI base unit second divided by the composed unit for pressure (pound-force per square inch)
$\textit{Inch per Square second}$ is an Imperial unit for $\textit{Linear Acceleration}$ expressed as $in/s^2$.
Inch per Square Second
unit of the length according to the Anglo-American and Imperial system of units divided by the unit common year with 365 days
A square inch is a unit of area, equal to the area of a square with sides of one inch. The following symbols are used to denote square inches: square in, sq inches, sq inch, sq in inches/-2, inch/-2, in/-2, inches^2, $inch^2$, $in^2$, $inches^2$, $inch^2$, $in^2$ or in some cases $"^2$. The square inch is a common unit of measurement in the United States and the United Kingdom.
Square Inch
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2 divided by the SI base unit second
Square Inch per Second
The cubic inch is a unit of measurement for volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its three sides being one inch long. The cubic inch and the cubic foot are still used as units of volume in the United States, although the common SI units of volume, the liter, milliliter, and cubic meter, are continually replacing them, especially in manufacturing and high technology. One cubic foot is equal to exactly 1728 cubic inches.
Cubic Inch
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit hour
Cubic Inch per Hour
power of the unit inch according to the Anglo-American and Imperial system of units by exponent 3 divided by the avoirdupois pound according to the avoirdupois unit system
"Cubic Inch per Minute" is an Imperial unit for 'Volume Per Unit Time' expressed as $in^{3}/min$.
Cubic Inch per Minute
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the SI base unit second
Cubic Inch per Second
power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 4
Quartic Inch
Inches of water, wc, inch water column (inch WC), inAq, Aq, or inH2O is a non-SI unit for pressure. The units are by convention and due to the historical measurement of certain pressure differentials. It is used for measuring small pressure differences across an orifice, or in a pipeline or shaft. Inches of water can be converted to a pressure unit using the formula for pressure head. It is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions for example $39 ^\circ F$ at the standard acceleration of gravity; 1 inAq is approximately equal to 249 pascals at $0 ^\circ C$.
Inch of Water
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inH₂O meets the static pressure, which is generated by a head of water at a temperature of 39.2°F with a height of 1 inch
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inH₂O meets the static pressure, which is generated by a head of water at a temperature of 60°F with a height of 1 inch
Inches of mercury, (inHg) is a unit of measurement for pressure. It is still widely used for barometric pressure in weather reports, refrigeration and aviation in the United States, but is seldom used elsewhere. It is defined as the pressure exerted by a column of mercury of 1 inch in height at $32 ^\circ F$ at the standard acceleration of gravity. 1 inHg = 3,386.389 pascals at $0 ^\circ C$.
Inch of Mercury
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inHg meets the static pressure, which is generated by a mercury at a temperature of 32°F with a height of 1 inch
non SI-conform unit of pressure according to the Anglo-American and Imperial system for units, whereas the value of 1 inHg meets the static pressure, which is generated by a mercury at a temperature of 60°F with a height of 1 inch
The $\textit{International Unit}$ is a unit for $\textit{Amount Of Substance}$ expressed as $IU$. Note that the magnitude depends on the substance, thus there is no fixed conversion multiplier.
International Unit
The $\textit{International Unit per Liter}$ is a unit for 'Serum Or Plasma Level' expressed as $IU/L$. The magnitude of one $IU/L$ depends on the material, so there is no single conversion multiplier.
International Unit per Liter
International Unit per Litre
International Unit per milligramme. The magnitude of one $IU/L$ depends on the material, so there is no single conversion multiplier.
International Unit per MilliGram
The $\textit{International Unit per Milliliter}$ is a unit for 'Serum Or Plasma Level' expressed as $IU/mL$. The magnitude of one $IU/L$ depends on the material, so there is no single conversion multiplier.
International Unit per MilliLiter
$\textit{Joule}$ is the SI unit of work or energy, defined to be the work done by a force of one newton acting to move an object through a distance of one meter in the direction in which the force is applied. Equivalently, since kinetic energy is one half the mass times the square of the velocity, one joule is the kinetic energy of a mass of two kilograms moving at a velocity of $1 m/s$.
$$\text{J}\ \equiv\ \text{joule}\ \equiv\ \text{CV}\ \equiv\ \text{coulomb.volt}\ \equiv\ \frac{\text{eV}}{1.602\ 10^{-19}}\ \equiv\ \frac{\text{electron.volt}}{1.602\ 10^{-19}}$$
The SI unit of work or energy, defined to be the work done by a force of one newton acting to move an object through a distance of one meter in the direction in which the force is applied. Equivalently, since kinetic energy is one half the mass times the square of the velocity, one joule is the kinetic energy of a mass of two kilograms moving at a velocity of 1 m/s. This is the same as 107 ergs in the CGS system, or approximately 0.737 562 foot-pound in the traditional English system. In other energy units, one joule equals about 9.478 170 x 10-4 Btu, 0.238 846 (small) calories, or 2.777 778 x 10-4 watt hour. The joule is named for the British physicist James Prescott Joule (1818-1889), who demonstrated the equivalence of mechanical and thermal energy in a famous experiment in 1843.
Dżul
Joule
Joulium
Julio
Τζάουλ
Джаул
Джоуль
ژول
जूल
ジュール
焦耳
$\textit{Joule Meter per Mole}$ is a unit for 'Length Molar Energy' expressed as: $$J \cdot m \cdot mol^{-1}$$.
Joule Meter per Mole
Joule Metre per Mole
Joule Square Meter
Joule Square Metre
Joule Square Meter per KiloGram
Joule Square Metre per KiloGram
derived SI unit joule divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Joule per Square CentiMeter
Joule per Square CentiMetre
Radiant energy per 10^-4 SI unit area over a period of one day.
Joules per Square CentiMetre Day
$\textit{Joule per Cubic Centimeter Kelvin}$ is a unit for 'Volumetric Heat Capacity' expressed as $J/(cm^{3} K)$.
Joule per Cubic Centimeter Kelvin is a unit for Volumetric Heat Capacity expressed as J/(cm³·K)
Joule per Cubic CentiMeter Kelvin
Joule per Cubic CentiMetre Kelvin
quotient from the SI derived unit joule divided by the unit day
SI derived unit joule divided by the 0.001-fold of the SI base unit kilogram
Joule per Gram
Unit for expressing the specific heat capacity.
Joule per Gram Degree Celsius
Joule per Gram Kelvin is a unit typically used for specific heat capacity.
Joule per Gram Kelvin
SI derived unit joule divided by the 3600 times the SI base unit second
Joule per Hour
Joule Per Kelvin (J/K) is a unit in the category of Entropy. It is also known as joules per kelvin, joule/kelvin. This unit is commonly used in the SI unit system. Joule Per Kelvin (J/K) has a dimension of $ML^{2}T^{-2}Q^{-1}$ where $M$ is mass, $L$ is length, $T$ is time, and Q is temperature. This unit is the standard SI unit in this category.
Dżul Na Kelwin
Joule Al Kelvin
Joule Bölü Kelvin
Joule Je Kelvin
Joule Na Kelvin
Joule Par Kelvin
Joule Pe Kelvin
Joule Por Kelvin
Joule per Kelvin
Julio Por Kelvin
Джоуль На Кельвин
جول لكل كلفن
ژول بر کلوین
जूल प्रति कैल्विन
ジュール毎立方メートル
焦耳每开尔文
A $\textit{Joule Per Kilogram}$, ($J/kg$), is a unit in the category of total energy per unit mass, commonly known as specific enthalpy. It is also known as $\textit{joules per kilogram}$. The unit has a dimension of $L2T^{-2}$ where $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
Joule per KiloGram
Dżul Na KiloGramostopień Celsjusza
Joule Al Chilogrammo per Grado Celsius
Joule Je KiloGramm Grad Celsius
Joule Na KiloGram Stopinja Celzija
Joule Na KiloGram Stupně Celsia
Joule Par KiloGramme-degré Celsius
Joule Pe KiloGram-grad Celsius
Joule Por Quilograma Grau Celsius
Joule per KiloGram Celsius
Joule per KiloGram Darjah Celsius
Joule per KiloGram Degree Celsius
Julio Porkilogramo Grado Celsius
Джоуль На Килограмм-градус Цельсия
Specific heat capacity - The heat required to raise unit mass of a substance by unit temperature interval under specified conditions, such as constant pressure: usually measured in joules per kelvin per kilogram. Symbol $c_p$ (for constant pressure). Also called specific heat.
Joule per KiloGram Kelvin
Joule per KiloGram Kelvin Cubic Meter
Joule per KiloGram Kelvin Cubic Metre
Joule per KiloGram Kelvin Pascal
Joule per Meter
Joule per Metre
Joule Per Square Meter ($J/m^2$) is a unit in the category of Energy density. It is also known as joules per square meter, joule per square metre, joule/square meter, joule/square metre. This unit is commonly used in the SI unit system.
Joule per Square Meter
Joule per Square Metre
A unit of thermal inertia measured as Joules per meter squared per square root Seconds per degree Kelvin
Joules per Meter Squared Sqrt(second) Degree Kelvin
$\textit{Joule Per Cubic Meter}$ ($J/m^{3}$) is a unit in the category of Energy density. It is also known as joules per cubic meter, joule per cubic metre, joules per cubic metre, joule/cubic meter, joule/cubic metre. This unit is commonly used in the SI unit system. It has a dimension of $ML^{-1}T^{-2}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
Joule per Cubic Meter
Joule per Cubic Metre
$\textit{Joule per Cubic Meter Kelvin}$ is a unit for 'Volumetric Heat Capacity' expressed as $J/(m^{3} K)$.
Joule per Cubic Meter Kelvin
Joule per Cubic Metre Kelvin
The unit $\textit{Joule Per Quartic Meter}$ ($J/m^4$) is a unit for the spectral concentration of radiant energy density (in terms of wavelength), or the spectral radiant energy density (in terms of wave length). This unit is commonly used in the SI unit system.
Joule per Quartic Meter
Joule per Quartic Metre
quotient from the SI derived unit joule divided by the unit minute
The joule per mole (symbol: $J\cdot mol^{-1}$) is an SI derived unit of energy per amount of material. Energy is measured in joules, and the amount of material is measured in moles. Physical quantities measured in $J\cdot mol^{-1}$) usually describe quantities of energy transferred during phase transformations or chemical reactions. Division by the number of moles facilitates comparison between processes involving different quantities of material and between similar processes involving different types of materials. The meaning of such a quantity is always context-dependent and, particularly for chemical reactions, is dependent on the (possibly arbitrary) definition of a 'mole' for a particular process.
Dżul Na Mol
Joule Alla Mole
Joule Bölü Metre Küp
Joule Je Mol
Joule Na Mol
Joule Par Mole
Joule Pe Mol
Joule Por Mol
Joule per Mole
Julio Por Mol
Джоуль На Моль
جول لكل مول
ژول بر مول
जूल प्रति मोल (इकाई)
焦耳每摩尔
Energy needed to heat one mole of substance by 1 Kelvin, under standard conditions (not standard temperature and pressure STP). The standard molar entropy is usually given the symbol S, and has units of joules per mole kelvin ( $ J\cdot mol^{-1} K^{-1}$). Unlike standard enthalpies of formation, the value of S is an absolute. That is, an element in its standard state has a nonzero value of S at room temperature.
Joule per Mole Kelvin
SI derived unit joule divided by the SI base unit second
Joule per Second
The magnetic moment of a magnet is a quantity that determines the force that the magnet can exert on electric currents and the torque that a magnetic field will exert on it. A loop of electric current, a bar magnet, an electron, a molecule, and a planet all have magnetic moments. The unit for magnetic moment is not a base unit in the International System of Units (SI) and it can be represented in more than one way. For example, in the current loop definition, the area is measured in square meters and I is measured in amperes, so the magnetic moment is measured in ampere-square meters (A m2). In the equation for torque on a moment, the torque is measured in joules and the magnetic field in tesla, so the moment is measured in Joules per Tesla (J u00b7T-1). These two representations are equivalent: 1 A u00b7m2 = 1 J u00b7T-1.
Dżul Na Tesla
Joule Al Tesla
Joule Bölü Tesla
Joule Je Tesla
Joule Na Tesla
Joule Par Tesla
Joule Pe Tesla
Joule Por Tesla
Joule per Tesla
Julio Por Tesla
Джоуль На Тесла
جول لكل تسلا
ژول بر تسلا
जूल प्रति टैस्ला
焦耳每特斯拉
A measure of the diamagnetic energy, for a Bohr-radius spread around a magnetic axis, per square Tesla.
Joule per Square Tesla
The $\textit{joule-second}$ is a unit equal to a $joule$ multiplied by a second, used to measure action or angular momentum. The joule-second is the unit used for Planck's constant.
Dżulosekunda
Joule Saat
Joule Saniye
Joule Second
Joule Sekunda
Joule per Secondo
Joule-seconde
Joule-secundă
Joule-segundo
Joulesekunde
Julio Segundo
Джоуль-секунда
جول ثانية
ژول ثانیه
जूल सैकण्ड
ジュール秒
焦耳秒
$\textit{Joule Second per Mole}$ is a unit for 'Molar Angular Momentum' expressed as $J s mol^{-1}$.
Joule Second per Mole
The unit $\textit{Kelvin}$ is the SI base unit of temperature, previously called the degree Kelvin. One kelvin represents the same temperature difference as one degree Celsius. In 1967 the General Conference on Weights and Measures defined the temperature of the triple point of water (the temperature at which water exists simultaneously in the gaseous, liquid, and solid states) to be exactly 273.16 kelvins. Since this temperature is also equal to 0.01 u00b0C, the temperature in kelvins is always equal to 273.15 plus the temperature in degrees Celsius. The kelvin equals exactly 1.8 degrees Fahrenheit. The unit is named for the British mathematician and physicist William Thomson (1824-1907), later known as Lord Kelvin after he was named Baron Kelvin of Largs.
Kelvin
Kelwin
Κέλβιν
Келвин
Кельвин
קלווין
كلفن
کلوین
कैल्विन
ケルビン
开尔文
Kelvin Day
Kelvin Metres
Kelvin Metres per Second
product of the SI base unit kelvin and the SI base unit metre divided by the derived SI unit watt
Kelvin Meter per Watt
Kelvin Metre per Watt
Kelvin Square Metres per KiloGram Second
Kelvin Pascals per Second
SI base unit kelvin divided by the unit bar
$\textit{Kelvin per Hour}$ is a unit for 'Temperature Per Time' expressed as $K / h$.
Kelvin per Hour
SI base unit kelvin divided by the SI base unit kelvin
Kelvin per Kelvin
A change of temperature on the Kelvin temperature scale in one SI unit of length.
Kelvin per Metre
$\textit{Kelvin per Minute}$ is a unit for 'Temperature Per Time' expressed as $K / m$.
Kelvin per Minute
SI base unit kelvin divided by the SI derived unit pascal
$\textit{Kelvin per Second}$ is a unit for 'Temperature Per Time' expressed as $K / s$.
Kelvin per Second
$\textit{Kelvin per Square Second}$ is a unit for 'Temperature Per Time Squared' expressed as $K / s^2$.
Kelvin per Square Second
$\textit{Kelvin per Tesla}$ is a unit for 'Temperature Per Magnetic Flux Density' expressed as $K T^{-1}$.
Kelvin per Tesla
Thermal resistance is a heat property and a measure of a temperature difference by which an object or material resists a heat flow (heat per time unit or thermal resistance). Thermal resistance is the reciprocal thermal conductance. Absolute thermal resistance is the temperature difference across a structure when a unit of heat energy flows through it in unit time. It is the reciprocal of thermal conductance. The SI units of thermal resistance are kelvins per watt or the equivalent degrees Celsius per watt (the two are the same since as intervals).
Kelvin Al Watt
Kelvin Je Watt
Kelvin per Watt
Kelvin Second
Square Kelvin
A unit of catalytic activity used especially in the chemistry of enzymes. A catalyst is a substance that starts or speeds a chemical reaction. Enzymes are proteins that act as catalysts within the bodies of living plants and animals. A catalyst has an activity of one katal if it enables a reaction to proceed at the rate of one mole per second.
Katal
Κατάλ
Катал
קטל
كاتال
کاتال
कटल
カタール
开特
Katal per Liter
Katal per Litre
the SI derived unit katal divided by the SI base unit metre to the power three
Katal per MicroLiter
Katal per MicroLitre
Kip
"Kip per Square Inch" is a unit for 'Force Per Area' expressed as $kip/in^{2}$.
Kip per Square Inch
The knot (pronounced 'not') is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. The abbreviation $kn$ is preferred by the International Hydrographic Organization (IHO), which includes every major sea-faring nation; however, the abbreviations kt (singular) and kts (plural) are also widely used. However, use of the abbreviation kt for knot conflicts with the SI symbol for kilotonne. The knot is a non-SI unit accepted for use with the International System of Units (SI). Worldwide, the knot is used in meteorology, and in maritime and air navigation - for example, a vessel travelling at 1 knot along a meridian travels one minute of geographic latitude in one hour. Etymologically, the term knot derives from counting the number of knots in the line that unspooled from the reel of a chip log in a specific time.
Knot
$\textit{Knot per Second}$ is a unit for 'Linear Acceleration' expressed as $kt/s$.
Knot per Second
Kayser
1024-fold of the unit bit divided by the SI base unit metre
1024-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1024-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
The kibibyte is a multiple of the unit byte for digital information equivalent to 1024 bytes.
Kibibyte
KiloAmpere
product of the 1 000-fold of the SI base unit ampere and the unit hour
KiloAmpere Hour
1,000-fold of the SI base unit ampere divided by the SI base unit kelvin
1 000-fold of the SI base unit ampere divided by the SI base unit metre
KiloAmpere per Meter
KiloAmpere per Metre
1 000-fold of the SI base unit ampere divided by the power of the SI base unit metre with the exponent 2
KiloAmpere per Square Meter
KiloAmpere per Square Metre
KiloBar
1,000-fold of the unit baud for the symbol rate in communications engineering and telecommunication
A kilobit per second (kB/s) is a unit of data transfer rate equal to 1,000 bits per second.
KiloBit per Second
1 000-fold of the SI derived unit becquerel
KiloBecquerel
1,000-fold of the SI derived unit becquerel divided by the SI base unit kilogram
Kilo British Thermal Unit (international Definition)
$\textit{kBTU per Square Foot}$ is an Imperial unit for 'Energy Per Area' expressed as $kBtu/ft^2$.
kBTU per Square Foot is an Imperial unit for 'Energy Per Area.
Kbtu per Square Foot
Kilo British Thermal Unit (international Definition) per Hour
Kilo British Thermal Unit (thermochemical Definition)
Kilo British Thermal Unit (thermochemical) per Hour
The kilobyte is a multiple of the unit byte for digital information equivalent to 1000 bytes. Although the prefix kilo- means 1000, the term kilobyte and symbol kB have historically been used to refer to either 1024 (210) bytes or 1000 (103) bytes, dependent upon context, in the fields of computer science and information technology. This ambiguity is removed in QUDT, with KibiBYTE used to refer to 1024 bytes.
Kilo Byte
A kilobyte per second (kByte/s) is a unit of data transfer rate equal to 1000 bytes per second or 8000 bits per second.
KiloByte per Second
KiloCoulomb
1 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
KiloCoulomb per Square Meter
KiloCoulomb per Square Metre
1 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
KiloCoulomb per Cubic Meter
KiloCoulomb per Cubic Metre
A $\textit{Kilocalorie}$ is a unit for $\textit{Energy And Work}$ expressed as $kcal$.
KiloCalorie
KiloCalorie per CentiMeter Second Degree Celsius
KiloCalorie per CentiMetre Second Degree Celsius
"Kilocalorie per Square Centimeter" is a unit for 'Energy Per Area' expressed as $kcal/cm^{2}$.
KiloCalorie per Square CentiMeter
KiloCalorie per Square CentiMetre
"Kilocalorie per Square Centimeter Minute" is a unit for 'Power Per Area' expressed as $kcal/(cm^{2}-min)$.
KiloCalorie per Square CentiMeter Minute
KiloCalorie per Square CentiMetre Minute
"Kilocalorie per Square Centimeter Second" is a unit for 'Power Per Area' expressed as $kcal/(cm^{2}-s)$.
KiloCalorie per Square CentiMeter Second
KiloCalorie per Square CentiMetre Second
"Kilocalorie per Gram" is a unit for 'Specific Energy' expressed as $kcal/gm$.
KiloCalorie per Gram
$\textit{Calorie per Gram Degree Celsius}$ is a unit for 'Specific Heat Capacity' expressed as $kcal/(gm-degC)$.
Calorie per Gram Degree Celsius
A $\textit{Kilocalorie per Minute}$ is a unit for $\textit{Heat Flow Rate}$ and $\textit{Power}$, expressed as $kcal/min$.
KiloCalorie per Minute
The kilocalorie per mole is a derived unit of energy per Avogadro's number of particles. It is the quotient of a kilocalorie (1000 thermochemical gram calories) and a mole, mainly used in the United States. In SI units, it is equal to $4.184 kJ/mol$, or $6.9477 \times 10 J per molecule$. At room temperature it is equal to 1.688 . Physical quantities measured in $kcal\cdot mol$ are usually thermodynamical quantities; mostly free energies such as: Heat of vaporization Heat of fusion .
KiloCalorie per Mole
A $\textit{Kilocalorie per Mole Degree Celsius}$ is a unit for 'Molar Heat Capacity', expressed as $kcal/(mol-degC)$.
KiloCalorie per Mole Degree Celsius
A $\textit{Kilocalorie per Second}$ is a unit for $\textit{Heat Flow Rate}$ and $\textit{Power}$, expressed as $kcal/s$.
KiloCalorie per Second
1000-fold of the unit calorie, which is used particularly for calorific values of food
KiloCalorie (international Table)
unit of the mass-related heat capacity as quotient 1,000-fold of the calorie (international table) divided by the product of the 0.001-fold of the SI base units kilogram and kelvin
KiloCalorie (international Table) per Gram Kelvin
1 000-fold of the no longer approved unit international calorie for energy divided by the product of the SI base unit metre, the unit hour for time and the unit degree Celsius for temperature
KiloCalorie (international Table) per Hour Meter Degree Celsius
KiloCalorie (international Table) per Hour Metre Degree Celsius
KiloCalorie (mean)
KiloCalorie (thermochemical)
1 000-fold of the non-legal unit thermochemical calorie divided by the unit hour
KiloCalorie (thermochemical) per Hour
1000-fold of the unit calorie divided by the unit minute
KiloCalorie (thermochemical) per Minute
1000-fold of the unit calorie divided by the SI base unit second
KiloCalorie (thermochemical) per Second
KiloCurie
Thousand Cubic Foot
"Kilo Electron Volt" is a unit for 'Energy And Work' expressed as $keV$.
Kilo Electron Volt
"Kilo Electron Volt per Micrometer" is a unit for 'Linear Energy Transfer' expressed as $keV/microM$.
Kilo Electron Volt per MicroMeter
Kilo Electron Volt per MicroMetre
1 000-fold of the CGS unit of the magnetic flux density B
KiloGauss
The kilogram or kilogramme (SI symbol: kg), also known as the kilo, is the base unit of mass in the International System of Units and is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water. The avoirdupois (or international) pound, used in both the Imperial system and U.S. customary units, is defined as exactly 0.45359237 kg, making one kilogram approximately equal to 2.2046 avoirdupois pounds.
Chiliogramma
Chilogrammo
KiloGram
KiloGramm*
KiloGramm
KiloGramme
KiloGramo
Quilograma
Χιλιόγραμμο
Килограм
Килограмм
קילוגרם
كيلوغرام
کیلوگرم
किलोग्राम
キログラム
公斤
product of the SI base unit kilogram and the 0.01-fold of the SI base unit metre divided by the SI base unit second
product of the SI base unit kilogram and the 0 0001fold of the power of the SI base unit metre with the exponent 2
KiloGram Square CentiMeter
KiloGram Square CentiMetre
$\textit{Kilogram Kelvin}$ is a unit for 'Mass Temperature' expressed as $kg-K$.
KiloGram Kelvin
unit of the imbalance as a product of the SI base unit kilogram and the SI base unit metre
"Kilogram Meter Per Second" is a unit for 'Linear Momentum' expressed as $kg-m/s$.
Chilogrammo per Metro Al Secondo
KiloGram Meter Na Sekundo
KiloGram Meter per Saat
KiloGram Meter per Second
KiloGram Metre per Second
KiloGramm Mal Meter Je Sekunde
کیلوگرم متر بر ثانیه
千克米每秒
product of the SI base unit kilogram and the SI base unit metre divided by the power of the SI base unit second by exponent 2
"Kilogram Square Meter" is a unit for 'Moment Of Inertia' expressed as $kg-m^2$.
Chilogrammo Metro Quadrato
KiloGram Meter Persegi
KiloGram Metrekare
KiloGram Square Meter
KiloGram Square Metre
KiloGram Čtvereční Metr
KiloGram-metru Pătrat
KiloGramm Mal Quadratmeter
KiloGramme-mètre Carré
KiloGramo Metro Cuadrado
Quilograma-metro Quadrado
Килограмм-квадратный Метр
كيلوغرام متر مربع
نیوتون متر مربع
किलोग्राम वर्ग मीटर
キログラム平方メートル
千克平方米
"Kilogram Square Meter Per Second" is a unit for 'Angular Momentum' expressed as $kg-m^2-s^{-1}$.
KiloGram Square Meter per Second
KiloGram Square Metre per Second
product of the SI base kilogram and the 0.001-fold of the power of the SI base metre with the exponent 2
KiloGram Square MilliMeter
KiloGram Square MilliMetre
SI base unit kilogram divided by the unit bar
SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
KiloGram per Square CentiMeter
KiloGram per Square CentiMetre
SI base unit kilogram divided by the 0.000 001-fold of the power of the SI base unit metre with the exponent 3
KiloGram per Cubic CentiMeter
KiloGram per Cubic CentiMetre
SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit kilogram divided by the product out of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit
SI base unit kilogram divided by the unit day
KiloGram per Day
SI base unit kilogram divided by the product out of the unit day and the unit bar
SI base unit kilogram divided by the product out of the unit day and the SI base unit kelvin
SI base unit kilogram divided by the 0.001-fold of the power of the SI base unit metre with the exponent 3
KiloGram per Cubic DeciMeter
KiloGram per Cubic DeciMetre
SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit kilogram divided by the product out of the 0.001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
SI base unit kilogram divided by the square of the imperial foot
KiloGram per Square Foot
SI base unit kilogram divided by the SI base unit gigajoule
KiloGram per GigaJoule
Kilogram Per Hectare is a unit of mass per area. Kilogram Per Hectare (kg/ha) has a dimension of ML-2 where $M$ is mass, and $L$ is length. It can be converted to the corresponding standard SI unit kg/m2 by multiplying its value by a factor of 0.0001.
KiloGram per Hectare
A measure of areal density over time equivalent to 1 kg per hectare per year.
KiloGram per Hectare per Year
Kilogram Per Hour (kg/h) is a unit in the category of Mass flow rate. It is also known as kilogram/hour. Kilogram Per Hour (kg/h) has a dimension of MT-1 where $M$ is mass, and $T$ is time. It can be converted to the corresponding standard SI unit kg/s by multiplying its value by a factor of 0.000277777777778.
KiloGram per Hour
SI base unit kilogram divided by the product out of the unit hour and the unit bar
SI base unit kilogram divided by the product out of the unit hour and the SI base unit kelvin
SI base unit kilogram divided by the SI base unit joule
KiloGram per Joule
SI base unit kilogram divided by the SI base unit kelvin
SI base unit kilogram divided by the SI base unit kilogram
KiloGram per KiloGram
SI base kilogram divided by the 1,000-fold of the SI base unit metre
One SI standard unit of mass over the square of one thousand standard unit of length.
KiloGrams per Square KiloMetre
SI base unit kilogram divided by the 1 000-fold of the SI base unit mol
KiloGram per KiloMol
SI base unit kilogram divided by the unit litre
KiloGram per Liter
KiloGram per Litre
SI base unit kilogram divided by the product out of the unit litre and the unit bar
SI base unit kilogram divided by the product out of the unit litre and the SI base unit kelvin
Kilogram Per Meter (kg/m) is a unit in the category of Linear mass density. It is also known as kilogram/meter, kilogram/metre, kilograms per meter, kilogram per metre, kilograms per metre. This unit is commonly used in the SI unit system. Kilogram Per Meter (kg/m) has a dimension of ML-1 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
KiloGram per Meter
KiloGram per Metre
unit of the dynamic viscosity as a quotient SI base unit kilogram divided by the SI base unit metre and by the unit day
One SI standard unit of mass over one SI standard unit of length over 3600 times one SI standard unit of time.
KiloGrams per Metre Hour
unit of the dynamic viscosity as a quotient SI base unit kilogram divided by the SI base unit metre and by the unit minute
unit of the dynamic viscosity as a quotient SI base unit kilogram divided by the SI base unit metre and by the SI base unit second
KiloGrams per Metre Second
The SI unit of pressure. The pascal is the standard pressure unit in the MKS metric system, equal to one newton per square meter or one "kilogram per meter per second per second." The unit is named for Blaise Pascal (1623-1662), French philosopher and mathematician, who was the first person to use a barometer to measure differences in altitude.
KiloGrams per Metre Square Second
Kilogram Per Square Meter (kg/m2) is a unit in the category of Surface density. It is also known as kilograms per square meter, kilogram per square metre, kilograms per square metre, kilogram/square meter, kilogram/square metre. This unit is commonly used in the SI unit system. Kilogram Per Square Meter (kg/m2) has a dimension of ML-2 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
KiloGram per Square Meter
KiloGram per Square Metre
A measure of areal density over time equivalent to 1 kg per square meter per day.
KiloGram per Square Meter per Day
KiloGram per Square Metre per Day
unit for the ability of a material to allow the transition of the steam
KiloGrams per Square Metre Pascal Second
KiloGrams per Square Metre Second
KiloGram per Square Meter Square Second
KiloGram per Square Metre Square Second
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is $kg \cdot m^{-3}$, or equivalently either $kg/m^3$.
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is kg . m^-3, or equivalently either kg/m^3.
Chilogrammo Al Metro Cubo
KiloGram Bölü Metre Küp
KiloGram Na Kubični Meter
KiloGram Na Metr Krychlový
KiloGram Na Metr Sześcienny
KiloGram Pe Metru Cub
KiloGram per Cubic Meter
KiloGram per Cubic Metre
KiloGram per Meter Kubik
KiloGramm Je Kubikmeter
KiloGramme Par Mètre Cube
KiloGramo Por Metro Cúbico
Quilograma Por Metro Cúbico
Χιλιόγραμμο Ανά Κυβικό Μέτρο
Килограм На Кубичен Метър
Килограмм На Кубический Метр
كيلوغرام لكل متر مكعب
کیلوگرم بر متر مکعب
किलोग्राम प्रति घन मीटर
キログラム毎立方メートル
千克每立方米
SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit kilogram divided by the product out of the power of the SI base unit metre with the exponent 3 and the SI base unit kelvin
SI base unit kilogram divided by the product of the power of the SI base unit metre with exponent 3 and the SI derived unit pascal
KiloGrams per Cubic Metre Second
SI base unit kilogram divided by the unit minute
KiloGram per Minute
SI base unit kilogram divided by the product out of the unit minute and the unit bar
SI base unit kilogram divided by the product out of the unit minute and the SI base unit kelvin
The unit $\textit{}$, symbol $kg/mol$, is the base SI unit for molar mass. In chemistry, the molar mass $M$ is defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. It is a physical property of a given substance. However, for historical reasons, molar masses are almost always expressed in $g/mol$. As an example, the molar mass of water is approximately: $18.01528(33) \; g/mol$.
KiloGram per Mol
$\textit{Kilogram per Mega BTU}$ is an Imperial unit for 'Mass Per Energy' expressed as $kg/MBtu$.
Kilogram per Mega BTU is an Imperial Unit for 'Mass Per Energy.
KiloGram per Mega Btu
SI base unit kilogram divided by the 0.001-fold of the SI base unit metre
KiloGram per MilliMeter
KiloGram per MilliMetre
SI base unit kilogram divided by the SI derived unit pascal
Common unit for the Water vapour diffusion coefficient
Chilogrammo Al Pascal Secondo Metro
KiloGram Na Pascal Sekunda Meter
KiloGram Na Pascal Sekunda Metr
KiloGram Na Paskalosekundaometr
KiloGram Pe Pascal-secundă-metru
KiloGram per Pascal Saat Meter
KiloGram per Pascal Saniye Metre
KiloGram per Pascal Second Metre
KiloGramm Je Pascal Sekunde Meter
KiloGramme Par Pascal-seconde-mètre
KiloGramo Por Pascal Segundo Metro
Quilograma Por Pascal Segundo Metro
Килограмм На Паскаль-секунда-метр
Kilogram Per Second (kg/s) is a unit in the category of Mass flow rate. It is also known as kilogram/second, kilograms per second. This unit is commonly used in the SI unit system. Kilogram Per Second (kg/s) has a dimension of $MT^{-1}$ where $M$ is mass, and $T$ is time. This unit is the standard SI unit in this category.
KiloGram per Second
SI base unit kilogram divided by the product out of the SI base unit second and the unit bar
SI base unit kilogram divided by the product out of the SI base unit second and the SI base unit kelvin
SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 2 and the SI base unit second
KiloGram per Second Square Meter
KiloGram per Second Square Metre
SI base unit kilogram divided by the product of the SI base unit second and the SI derived unit pascal
KiloGram per Square Second
Unit commonly used for the coefficient of heat transfer
Chilogrammo Al Secondo Cubo per Kelvin
KiloGram Na Krychlovýsekunda Kelvin
KiloGram Na Kubični Sekunda Kelvin
KiloGram Na Sekunda Sześciennyokelwin
KiloGram Pe Secundă Cub-kelvin
KiloGram per Cubic Second Kelvin
KiloGram per Saat Kubik Kelvin
KiloGram per Saniyeküp Kelvin
KiloGramm Je Kubiksekunde Kelvin
KiloGramme Par Seconde Cube-kelvin
KiloGramo Porsegundo Cúbico Kelvin
Quilograma Por Segundo Cúbico Kelvin
Килограмм На Кубический Секунда-кельвин
The SI base unit kilogram divided by the unit year
kilogram divided by the unit year with 365 days
KiloGram per Jaar
KiloGram per Year
KiloGram Square Second
Square KiloGrams per Square Second
"Kilogram Force" is a unit for 'Force' expressed as $kgf$.
KiloGram Force
product of the unit kilogram-force and the SI base unit metre
KiloGram_force Meter
KiloGram_force Metre
product of the unit kilogram-force and the SI base unit metre divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
KiloGram Force Meter per Square CentiMeter
KiloGram Force Metre per Square CentiMetre
product of the SI base unit metre and the unit kilogram-force according to the Anglo-American and Imperial system of units divided by the SI base unit second
KiloGram_force Meter per Second
KiloGram_force Metre per Second
"Kilogram Force per Square Centimeter" is a unit for 'Force Per Area' expressed as $kgf/cm^{2}$.
KiloGram Force per Square CentiMeter
KiloGram Force per Square CentiMetre
KiloGram Force per Square Meter
KiloGram Force per Square Metre
KiloGram Force per Square MilliMeter
KiloGram Force per Square MilliMetre
"Kilohertz" is a C.G.S System unit for 'Frequency' expressed as $KHz$.
KiloHertz
product of the 1 000-fold of the SI derived unit hertz and the SI base unit metre
KiloHertz Meter
KiloHertz Metre
KiloJoule
quotient from the 1,000-fold of the SI derived unit joule divided by the unit day
quotient from the 1,000-fold of the SI derived unit joule divided by the unit hour
1 000-fold of the SI derived unit joule divided by the SI base unit kelvin
KiloJoule per Kelvin
1 000-fold of the SI derived unit joule divided by the SI base unit kilogram
KiloJoule per KiloGram
1 000-fold of the SI derived unit joule divided by the product of the SI base unit kilogram and the SI base unit kelvin
KiloJoule per KiloGram Kelvin
Specification of the maximum of the energy absorption capability related to voltage rated value in kJ/kV, which could be emplaced in an arrester or parts of an arrester during a recovery test, without causing a thermal run away
quotient from the 1,000-fold of the SI derived unit joule divided by the unit minute
1 000-fold of the SI derived unit joule divided by the SI base unit mol
KiloJoule per Mole
quotient from the 1,000-fold of the SI derived unit joule divided by the SI base unit second
KiloLitre
unit of the volume kilolitres divided by the unit hour
KiloLitre per Hour
1,000-fold of the unit of the mass avoirdupois pound according to the avoirdupois unit system divided by the unit hour
1,000-fold of the unit of the force pound-force (lbf) according to the Anglo-American system of units
KiloPound Force
product of the Anglo-American unit pound-force and foot divided by the SI base unit ampere
Pound Force Foot per Ampere
product of the Anglo-American unit pound-force and the Anglo-American unit foot divided by the Anglo-American unit pound (US) of mass
Pound Force Foot per Pound
Pound Force per Foot
1 000-fold of the unit for pressure psi as a compounded unit pound-force according to the Anglo-American system of units divided by the power of the unit Inch according to the Anglo-American and Imperial system of units by exponent 2
KiloPound Force per Square Inch
KiloLumen
A common metric unit of length or distance. One kilometer equals exactly 1000 meters, about 0.621 371 19 mile, 1093.6133 yards, or 3280.8399 feet. Oddly, higher multiples of the meter are rarely used; even the distances to the farthest galaxies are usually measured in kilometers.
KiloMeter
KiloMetre
A change in location of a distance of one thousand metres in an elapsed time of one day (86400 seconds).
KiloMetres per Day
"Kilometer per Hour" is a C.G.S System unit for 'Linear Velocity' expressed as $km/h$.
KiloMeter per Hour
KiloMetre per Hour
"Kilometer per Second" is a C.G.S System unit for 'Linear Velocity' expressed as $km/s$.
KiloMeter per Second
KiloMetre per Second
SI base unit metre divided by the product of the SI base unit second and the unit bar
1,000-fold of the SI base unit metre divided by the power of the SI base unit second by exponent 2
1,000,000-fold of the power of the SI base unit metre with the exponent 2
Square KiloMeters per Square Second
Square KiloMetres per Square Second
$\textit{Cubic Kilometer per Square Second}$ is a unit for $\textit{Standard Gravitational Parameter}$ expressed as $km^3/s^2$.
Cubic KiloMeter per Square Second
Cubic KiloMetre per Square Second
unit of area, defined by a circle with a diameter of one thousand mil (one inch or 25.4 mm) based on the formula: area = π·(diameter/2)²
KiloMole
1 000-fold of the SI base unit mole divided by the unit for time hour
KiloMole per Hour
Kilomole Per Kilogram ($kmol/kg$) is a unit of Molality
KiloMole per KiloGram
1 000-fold of the SI base unit mol divided by the power of the SI base unit metre with the exponent 3
KiloMole per Cubic Meter
KiloMole per Cubic Metre
1,000-fold of the SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
1,000-fold of the SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
1 000-fold of the SI base unit mole divided by the unit for time minute
KiloMole per Minute
1 000-fold of the SI base unit mol divided by the SI base unit second
KiloMole per Second
1 000-fold of the SI derived unit newton
KiloNewton
1 000-fold of the product of the SI derived unit newton and the SI base unit metre
KiloNewton Meter
KiloNewton Metre
Unit for expressing the value of the torsional spring constant
KiloNewton Metre per Degree
A common unit for measuring the modulus of rotational subgrade reaction.
KiloNewton Metre per Degree Metre
Scaling of the base unit for expressing the rolling resistance, nM/m, by a factor of 1000
KiloNewton Metre per Metre
1,000-fold of the SI derived unit newton divided by the SI base unit metre to the power two
Kilo Newton Square Meter
Kilo Newton Square Metre
1,000-fold of the SI derived unit newton divided by the SI base unit metre
1,000-fold of the SI derived unit newton divided by the square of the SI base unit metre
1,000-fold of the SI derived unit newton divided by the cube of the SI base unit metre
KiloOhm
1,000-fold of the product of the SI derived unit ohm and the SI base unit metre
1,000-fold of SI derived unit ohm per metrical non SI unit bar
1,000-fold of the SI derived unit ohm per SI base unit kelvin
1,000-fold of the SI derived unit ohm divided by the SI base unit metre
Kilopascal is a unit of pressure. 1 kPa is approximately the pressure exerted by a 10-g mass resting on a 1-cm2 area. 101.3 kPa = 1 atm. There are 1,000 pascals in 1 kilopascal.
KiloPascal
sector-specific unit of the burst index as 1 000-fold of the derived unit for pressure pascal related to the substance, represented as a quotient from the 0.001-fold of the SI base unit kilogram divided by the power of the SI base unit metre by exponent 2
KiloPascal Square Meter per Gram
KiloPascal Square Metre per Gram
1 000-fold of the SI derived unit pascal divided by the unit bar
KiloPascal per Bar
1 000-fold of the SI derived unit pascal divided by the SI base unit kelvin
KiloPascal per Kelvin
1,000-fold of the SI derived unit pascal divided by the SI base unit metre
1 000-fold of the derived SI unit pascal divided by the 0.001-fold of the SI base unit metre
KiloPascal per MilliMeter
KiloPascal per MilliMetre
$\textit{Kilopascal Absolute}$ is a SI System unit for 'Force Per Area' expressed as $KPaA$.
KiloPascal Absolute
The kilopoise is a non-SI unit of dynamic viscosity, the 1 000-fold of the unit Poise.
KiloPoise
illegal unit of the weight, defined as mass of 1 kg which receives a weight of 1 kp through gravitation at sea level, which equates to a force of 9,806 65 newton
KiloPond
KiloRoentgen
1 000-fold of the SI derived unit siemens
KiloSiemens
1 000-fold of the SI derived unit siemens divided by the SI base unit metre
KiloSiemens per Meter
KiloSiemens per Metre
"Killosecond" is an Imperial unit for 'Time' expressed as $ks$.
KiloSecond
KiloTonne
1,000,000-fold of the SI base unit kilogram divided by the unit year
1000 metric tonne divided by the unit year with 365 days
KiloTon per Jaar
KiloTonne per Year
1 000 000-fold of the SI base unit kilogram
Metric KiloTon
KiloVolt
1 000-fold of the product of the SI derived unit volt and the SI base unit ampere
KiloVolt Ampere
product of the 1 000-fold of the unit for apparent by ampere and the unit hour
KiloVolt Ampere Hour
product of the 1,000-fold of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
KiloVolt Ampere Reactive
product of the 1,000-fold of the unit volt ampere reactive and the unit hour
product of the 1 000-fold of the unit volt ampere reactive and the unit hour
KiloVolt Ampere Reactive Hour
1,000-fold of the unit volt ampere reactive divided by the SI base unit kelvin
1 000-fold of the SI derived unit volt divided by the SI base unit metre
KiloVolt per Meter
KiloVolt per Metre
The unit $\textit{Kilowatt}$ is a derived unit of power in the International System of Units (SI). The unit, defined as 1,000 joule per second, measures the rate of energy conversion or transfer.
KiloWatt
The kilowatt hour, or kilowatt-hour, (symbol $kW \cdot h$, $kW h$ or $kWh$) is a unit of energy equal to 1000 watt hours or 3.6 megajoules. For constant power, energy in watt hours is the product of power in watts and time in hours. The kilowatt hour is most commonly known as a billing unit for energy delivered to consumers by electric utilities.
KiloWatthour
A unit of energy per unit area, equivalent to 3 600 000 joules per square metre.
KiloWatt Hour per Square Metre
1,000-fold of the SI derived unit watt divided by the product of the SI base unit metre and the unit for temperature degree Celsius
1,000-fold of the SI derived unit watt divided by the product of the SI base unit metre and the SI base unit kelvin
1 000-fold of the SI derived unit watt divided by the square of the SI base unit metre
KiloWatt per Square Meter
KiloWatt per Square Metre
1,000-fold of the SI derived unit watt divided by the product of the power of the SI base unit metre by exponent 2 and the SI base unit kelvin
KiloWeber
1 000-fold of the SI derived unit weber divided by the SI base unit metre
KiloWeber per Meter
KiloWeber per Metre
KiloYear
The $litre$ (American spelling: $\textit{liter}$; SI symbol $l$ or $L$) is a non-SI metric system unit of volume equal to $1 \textit{cubic decimetre}$ ($dm^3$), 1,000 cubic centimetres ($cm^3$) or $1/1000 \textit{cubic metre}$. If the lower case "L" is used as the symbol, it is sometimes rendered as a cursive "l" to help distinguish it from the capital "I", although this usage has no official approval by any international bureau.
Liter
Litre
Liter per Day
Litre per Day
unit litre divided by the product out of the unit day and the unit bar
unit litre divided by the product out of the unit day and the SI base unit kelvin
Liter per Hour
Litre per Hour
unit litre divided by the product out of the unit hour and the unit bar
unit litre divided by the product out of the unit hour and the SI base unit kelvin
unit litre divided by the SI base unit kelvin
Liter per Kelvin
Litre per Kelvin
unit of the volume litre divided by the SI base unit kilogram
Liter per KiloGram
Litre per KiloGram
volume ratio consisting of the unit litre divided by the unit litre
Liter per Liter
Litre per Litre
Liter per Minute
Litre per Minute
unit litre divided by the product out of the unit minute and the unit bar
unit litre divided by the product out of the unit minute and the SI base unit kelvin
unit litre divided by the SI base unit mol
Liter per Mole
Litre per Mole
0.001-fold of the power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit mol and the SI base unit second
The inverse of a molar concentration.
Litres per MicroMole
unit litre divided by the SI base unit second
Liter per Second
Litre per Second
unit litre divided by the product out of the SI base unit second and the unit bar
unit litre divided by the product out of the SI base unit second and the SI base unit kelvin
Ventilation rate in Litres per second divided by the floor area
Liter per Second Square Meter
Litre per Second Square Metre
The lambert (symbol $L$, $la$ or $Lb$) is a non-SI unit of luminance. A related unit of luminance, the foot-lambert, is used in the lighting, cinema and flight simulation industries. The SI unit is the candela per square metre ($cd/m^2$).
Lambert
[CGS] unit of the areal-related energy transmission (as a measure of the incident quantity of heat of solar radiation on the earth's surface)
"Foot Lambert" is a C.G.S System unit for 'Luminance' expressed as $ft-L$.
Foot Lambert
A pound of mass, based on the international standard definition of the pound of mass as exactly 0.45359237 kg.
Pound Mass
$\textit{Pound Degree Fahrenheit}$ is an Imperial unit for 'Mass Temperature' expressed as $lb-degF$.
Pound Degree Fahrenheit
$\textit{Pound Degree Rankine}$ is an Imperial unit for 'Mass Temperature' expressed as $lb-degR$.
Pound Degree Rankine
product of the avoirdupois pound according to the avoirdupois unit system and the unit foot according to the Anglo-American and Imperial system of units divided by the SI base unit second
product of the unit pound according to the avoirdupois system of units and the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Mass (avoirdupois) Square Foot
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Foot per Gallon(uk) Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Foot per Gallon (US) Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Foot per Cubic Inch Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
Pound Hour per Power of Foot with the Exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
Pound Hour per Power of Inch with the Exponent 6
unit of the unbalance (product of avoirdupois pound according to the avoirdupois system of units and inch according to the Anglo-American and Imperial system of units)
Pound Mass (avoirdupois) Inch
product of the avoirdupois pound according to the avoirdupois unit system and the unit inch according to the Anglo-American and Imperial system of units divided by the SI base unit second
product of the unit pound according to the avoirdupois system of units and the power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Mass (avoirdupois) Square Inch
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Inch per Cubic Foot Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Inch per Gallon(uk) Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Inch per Gallon (US) Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Pound Square Inch per Cubic Inch Pound-force Second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
Pound Minute per Power of Foot with the Exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
Pound Minute per Power of Inch with the Exponent 6
mass per area as pounds of mass (based on the international standard definition of the pound of mass as exactly 0.45359237 kg) divided by area as acres (a unit of area in a number of different systems, including the imperial and U.S. customary systems. The most commonly used acres today are the international acre and, in the United States, the survey acre. The most common use of the acre is to measure tracts of land. One international acre is equal to 4046.8564224 square metres.
Pound per Acre
unit of the mass avoirdupois pound according to the avoirdupois system of units divided by the unit for time day
Pound (avoirdupois) per Day
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the traditional unit degree Fahrenheit
Pound (avoirdupois) per Degree Fahrenheit
"Pound per Foot" is an Imperial unit for 'Mass Per Length' expressed as $lb/ft$.
Pound per Foot
unit of the dynamic viscosity according to the Anglo-American unit system
"Pound per Foot Hour" is an Imperial unit for 'Dynamic Viscosity' expressed as $lb/(ft-h)$.
Pound per Foot Hour
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
"Pound per Foot Second" is an Imperial unit for 'Dynamic Viscosity' expressed as $lb/(ft-s)$.
Pound per Foot Second
unit for areal-related mass as a unit pound according to the avoirdupois system of units divided by the power of the unit foot according to the Anglo-American and Imperial system of units by exponent 2
Pound Mass (avoirdupois) per Square Foot
"Pound per Cubic Foot" is an Imperial unit for 'Density' expressed as $lb/ft^{3}$.
Pound per Cubic Foot
traditional unit pound (avoirdupois) for mass according to the avoirdupois system of units divided by the product of the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the traditional unit degree Fahrenheit
Pound (avoirdupois) per Cubic Foot Degree Fahrenheit
traditional unit pound (avoirdupois) for mass according to the avoirdupois system of units divided by the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the composed unit for pressure (pound-force per square inch)
"Pound per Gallon" is an Imperial unit for 'Density' expressed as $lb/gal$.
Pound per Gallon
unit of the mass avoirdupois pound according to the avoirdupois system of units divided by the unit gallon (UK) according to the Imperial system of units
Pound (avoirdupois) per Gallon (UK)
unit of the mass avoirdupois pound according to the avoirdupois system divided by the unit gallon (US, liq.) according to the Anglo-American system of units
Pound (avoirdupois) per Gallon (US)
Pound per hour is a mass flow unit. It is abbreviated as PPH or more conventionally as lb/h. Fuel flow for engines is usually expressed using this unit, it is particularly useful when dealing with gases or liquids as volume flow varies more with temperature and pressure. $1 lb/h = 0.4535927 kg/h = 126.00 mg/s$. Minimum fuel intake on a jumbojet can be as low as 150 lb/h when idling, however this is not enough to sustain flight.
Pound per Hour
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the product of the unit for time hour and the traditional unit degree Fahrenheit
Pound (avoirdupois) per Hour Degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according to the avoirdupois system of units divided by the unit for time hour divided by the composed unit for pressure (pound-force per square inch)
"Pound per Inch" is an Imperial unit for 'Mass Per Length' expressed as $lb/in$.
Pound per Inch
unit of the areal-related mass as avoirdupois pound according to the avoirdupois system of units related to the area square inch according to the Anglo-American and Imperial system of units
Pound (avoirdupois) per Square Inch
"Pound per Cubic Inch" is an Imperial unit for 'Density' expressed as $lb/in^{3}$.
Pound per Cubic Inch
traditional unit avoirdupois pound for mass according to the avoirdupois system of units divided by the product of the power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the traditional unit degree Fahrenheit
Pound (avoirdupois) per Cubic Inch Degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according to the avoirdupois system of units divided by the power of the unit inch with the exponent 3 according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force per square inch)
proportion of the mass consisting of the avoirdupois pound according to the avoirdupois unit system divided by the avoirdupois pound according to the avoirdupois unit system
"Pound per Cubic Meter" is a unit for 'Density' expressed as $lb/m^{3}$.
Pound per Cubic Meter
Pound per Cubic Metre
"Pound per Minute" is an Imperial unit for 'Mass Per Time' expressed as $lb/min$.
Pound per Minute
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the product of the unit for time minute and the traditional unit degree Fahrenheit
Pound (avoirdupois) per Minute Degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according to the avoirdupois system of units and the unit minute for time divided by the composed unit for pressure (pound-force per square inch)
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the composed unit for pressure (pound-force per square inch)
unit of the mass avoirdupois pound according to the avoirdupois system of units divided by the SI base unit for time second
Pound (avoirdupois) per Second
traditional unit for mass avoirdupois pound according to the avoirdupois system of units divided by the product of the SI base unit second and the traditional unit degree Fahrenheit
Pound (avoirdupois) per Second Degree Fahrenheit
quotient of the traditional unit avoirdupois pound for mass according the avoirdupois system of units and the SI base unit second divided by the composed unit for pressure (pound-force per square inch)
unit for linear mass according to avoirdupois system of units
unit for areal-related mass as a unit pound according to the avoirdupois unit system divided by the power of the unit yard according to the Anglo-American and Imperial system of units with exponent 2
"Pound per Cubic Yard" is an Imperial unit for 'Density' expressed as $lb/yd^{3}$.
Pound per Cubic Yard
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
Pound Second per Power of Foot with the Exponent 6
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (UK) according to the Anglo-American system of units and unit gallon (UK) according to the Imperial system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per unit gallon (US) according to the Anglo-American system of units and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
Pound Second per Power of Inch with the Exponent 6
"Pound Force" is an Imperial unit for 'Force' expressed as $lbf$.
Pound Force
"Pound Force Foot" is an Imperial unit for 'Torque' expressed as $lbf-ft$.
Pound Force Foot
unit for length-related rotational moment according to the Anglo-American and Imperial system of units
"Pound Force Inch" is an Imperial unit for 'Torque' expressed as $lbf-in$.
Pound Force Inch
"Pound Force per Foot" is an Imperial unit for 'Force Per Length' expressed as $lbf/ft$.
Pounds or Pounds Force per Square Foot is a British (Imperial) and American pressure unit which is directly related to the psi pressure unit by a factor of 144 (1 sq ft = 12 in x 12 in = 144 sq in). 1 Pound per Square Foot equals 47.8803 Pascals. The psf pressure unit is mostly for lower pressure applications such as specifying building structures to withstand a certain wind force or rating a building floor for maximum weight load.
Pound Force per Square Foot
"Pound Force per Inch" is an Imperial unit for 'Force Per Length' expressed as $lbf/in$.
Pound Force per Inch
"Pound Force per Square Inch" is an Imperial unit for 'Force Per Area' expressed as $psia$.
Pound Force per Square Inch
composed unit for pressure (pound-force per square inch) divided by the unit degree Fahrenheit for temperature
Pound Force per Square Inch Degree Fahrenheit
"Pound Force per Square Inch Second" is a unit for 'Force Per Area Time' expressed as $lbf / in^{2}-s$.
Pound Force per Square Inch Second
"Pound Force per Pound" is an Imperial unit for 'Thrust To Mass Ratio' expressed as $lbf/lb$.
Pound Force per Pound
unit of force per unit length based on the Anglo-American system of units
"Pound Force Second per Square Foot" is an Imperial unit for 'Dynamic Viscosity' expressed as $lbf-s/ft^{2}$.
Pound Force Second per Square Foot
"Pound Force Second per Square Inch" is an Imperial unit for 'Dynamic Viscosity' expressed as $lbf-s/in^{2}$.
Pound Force Second per Square Inch
An obsolete unit of mass; the Troy Pound has been defined as exactly 5760 grains, or 0.3732417216 kg. A Troy Ounce is 1/12th of a Troy Pound.
Pound Troy
The SI unit for measuring the flux of light being produced by a light source or received by a surface. The intensity of a light source is measured in candelas. One lumen represents the total flux of light emitted, equal to the intensity in candelas multiplied by the solid angle in steradians into which the light is emitted. A full sphere has a solid angle of $4\cdot\pi$ steradians. A light source that uniformly radiates one candela in all directions has a total luminous flux of $1 cd\cdot 4 \pi sr = 4 \pi cd \cdot sr \approx 12.57 \; \text{lumens}$. "Lumen" is a Latin word for light.
Lumen
Lümen
Λούμεν
Лумен
לומן
لومن
ल्यूमैन
ルーメン
流明
product of the SI derived unit lumen and the unit hour
SI derived unit lumen divided by the power of the unit foot according to the Anglo-American and Imperial system of units by exponent 2
SI derived unit lumen divided by the power of the SI base unit metre with the exponent 2
A measurement of luminous efficacy, which is the light output in lumens using one watt of electricity.
Lumen per Watt
In photometry, the lumen second is the SI derived unit of luminous energy. It is based on the lumen, the SI unit of luminous flux, and the second, the SI base unit of time. The lumen second is sometimes called the talbot (symbol T). An older name for the lumen second was the lumberg.
Lumen Second
The SI unit for measuring the illumination (illuminance) of a surface. One lux is defined as an illumination of one lumen per square meter or 0.0001 phot. In considering the various light units, it's useful to think about light originating at a point and shining upon a surface. The intensity of the light source is measured in candelas; the total light flux in transit is measured in lumens (1 lumen = 1 candelau00b7steradian); and the amount of light received per unit of surface area is measured in lux (1 lux = 1 lumen/square meter). One lux is equal to approximately 0.09290 foot candle.
Luks
Lux
Lüks
Лукс
Люкс
לוקס
لكس
لوکس
लक्स
ルクス
勒克斯
Lux Hour
product of the SI derived unit lux and the SI base unit second
A unit of length defining the distance, in meters, that light travels in a vacuum in one year.
Light Year
Lunar Mass
The metric and SI base unit of distance. The 17th General Conference on Weights and Measures in 1983 defined the meter as that distance that makes the speed of light in a vacuum equal to exactly 299 792 458 meters per second. The speed of light in a vacuum, $c$, is one of the fundamental constants of nature. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches.
The metric and SI base unit of distance. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches.
Meter
Metr
Metre
Metro
Metru
Metrum
Mètre
Méter
Μέτρο
Метр
Метър
מטר
متر
मीटर
メートル
$\textit{Meter Kelvin}$ is a unit for 'Length Temperature' expressed as $m K$.
Meter Kelvin
Meter Mal Kelvin
Metre Kelvin
Metro per Kelvin
متر کلوین
米开尔文
$\textit{Meter Kelvin per Watt}$ is a unit for 'Thermal Resistivity' expressed as $K-m/W$.
Meter Kelvin per Watt
Metre Kelvin per Watt
product of SI base units metre and kilogram given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
Meter KiloGram
Metre KiloGram
product of the SI base unit metre and the SI derived unit pascal divided by the SI base unit second
SI base unit metre divided by the unit bar
Meter Per Day (m/day) is a unit in the category of Velocity. It is also known as meter/day, meters per day, metre per day, metres per day. Meter Per Day (m/day) has a dimension of L*T-1 where L is length, and T is time. It can be converted to the corresponding standard SI unit m/s by multiplying its value by a factor of 0.00001157407407407407
Meter per Day
Metre per Day
SI base unit metre divided by the product of the unit degree Celsius and the SI base unit metre
Meter per Farad
Metre per Farad
A rate of change of SI standard unit length per hectare (squared hectometer) area.
Metres per Hectare
Metre per hour is a metric unit of both speed (scalar) and velocity (Vector (geometry)). Its symbol is m/h or mu00b7h-1 (not to be confused with the imperial unit symbol mph. By definition, an object travelling at a speed of 1 m/h for an hour would move 1 metre.
Meter per Hour
Metre per Hour
Meter per Kelvin
Metre per Kelvin
A rate of change of SI standard unit length per squared meter area.
Meters per Square Meter
Metres per Square Metre
Meter Per Minute (m/min) is a unit in the category of Velocity. It is also known as meter/minute, meters per minute, metre per minute, metres per minute. Meter Per Minute (m/min) has a dimension of LT-1 where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit m/s by multiplying its value by a factor of 0.016666666666
Meter per Minute
Metre per Minute
SI base unit metre divided by the SI derived unit pascal
unit of the translation factor for implementation from rotation to linear move according
Metre per second is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds. The official SI symbolic abbreviation is mu00b7s-1, or equivalently either m/s.
Meter Je Sekunde
Meter Na Sekundo
Meter per Saat
Meter per Second
Metr Na Sekundę
Metr Za Sekundu
Metra per Secundum
Metre Bölü Saniye
Metre per Second
Metro Al Secondo
Metro Por Segundo
Metru Pe Secundă
Mètre Par Seconde
Μέτρο Ανά Δευτερόλεπτο
Метр В Секунду
Метър В Секунда
מטרים לשנייה
متر بر ثانیه
متر في الثانية
मीटर प्रति सैकिण्ड
メートル毎秒
米每秒
SI base unit meter divided by the product of SI base unit second and the unit bar
SI base units metre divided by the product of the SI base unit second and the SI base unit kelvin
SI base unit metre divided by the product of the SI base unit second and the SI base unit Kelvin
The $\textit{meter per Square second}$ is the unit of acceleration in the International System of Units (SI). As a derived unit it is composed from the SI base units of length, the metre, and the standard unit of time, the second. Its symbol is written in several forms as $m/s^2$, or $m s^{-2}$. As acceleration, the unit is interpreted physically as change in velocity or speed per time interval, that is, $\textit{metre per second per second}$.
Meter per Square Second
Metre per Square Second
SI base unit metre divided by the product of the SI derived unit volt and the SI base unit second
A rate of change of SI standard unit length over a period of an average calendar year (365.25 days).
Metre per Year
product of SI base units metre and second to the power of minus one given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
product of SI base units metre and second to the power of two given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
The S I unit of area is the square metre.
Kvadratni Meter
Meter Persegi
Metr Kwadratowy
Metrekare
Metro Cuadrado
Metro Quadrado
Metro Quadrato
Metru Pătrat
Metrum Quadratum
Mètre Carré
Négyzetméter
Quadratmeter
Square Meter
Square Metre
Čtvereční Metr
Τετραγωνικό Μέτρο
Квадратен Метър
Квадратный Метр
מטר רבוע
متر مربع
वर्ग मीटर
平方メートル
平方米
product of the power of the SI base unit metre with the exponent 2, of the unit hour for time and the unit degree Celsius for temperature divided by the 1000-fold of the out of use unit for energy international calorie
Square Meter Hour Degree Celsius per KiloCalorie (international Table)
Square Metre Hour Degree Celsius per KiloCalorie (international Table)
Square Metres Hertz
Square Metres Square Hertz
Square Metres Cubic Hertz
Square Metres Hertz^4
$\textit{Square Meter Kelvin}$ is a unit for 'Area Temperature' expressed as $m^{2}-K$.
Square Meter Kelvin
Square Metre Kelvin
$\textit{Square Meter Kelvin per Watt}$ is a unit for 'Thermal Insulance' expressed as $(K^{2})m/W$.
Square Meter Kelvin per Watt
Square Metre Kelvin per Watt
Square Metres per Gram
Square Metres per Gram of Dry Sediment
Square Meters per Hectare
Square Metres per Hectare
power of the SI base unit metre with the exponent 2 divided by the unit hectare and by the unit year
Square Meter per Hectare Year
Square Metre per Hectare Year
Square Meter per Hour
Square Metre per Hour
Square Metres per Hertz
Square Metres per Hertz Degree
Square Metres per Square Hertz
Square Meter per Joule
Square Metre per Joule
Square Meter per Kelvin
Square Metre per Kelvin
Square Meter Per Kilogram (m2/kg) is a unit in the category of Specific Area. It is also known as square meters per kilogram, square metre per kilogram, square metres per kilogram, square meter/kilogram, square metre/kilogram. This unit is commonly used in the SI unit system. Square Meter Per Kilogram (m2/kg) has a dimension of M-1L2 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
Square Meter per KiloGram
Square Metre per KiloGram
A common unit for measuring area per power
Square Metre per KiloWatt
square metre divided by metre: plain text description in English
Kvadratni Meter Na Meter
Meter Persegi per Meter
Metr Kwadratowy Na Metr
Metrekare per Metre
Metro Cuadrado Pormetro
Metro Quadrado Por Metro
Metro Quadrato Al Metro
Metru Pătrat Pe Metru
Mètre Carré Par Mètre
Quadratmeter Je Meter
Square Metre per Metre
Čtvereční Metr Na Metr
Квадратный Метр На Метр
A square metre unit of area per square metre
Square Meter per Square Meter
Square Metre per Square Metre
Square Meter Per Mole (m2/mol) is a unit in the category of Specific Area. It is also known as square meters per mole, square metre per per, square metres per per, square meter/per, square metre/per. This unit is commonly used in the SI unit system. Square Meter Per Mole (m2/mol) has a dimension of M-1L2 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
Square Meter per Mole
Square Metre per Mole
power of the SI base unit metre with the exponent 2 divided by the derived SI unit newton
Square Meter per Newton
Square Metre per Newton
The unit $\textit{Square Metres per Second}$ is the SI derived unit of angular momentum, defined by distance or displacement in metres multiplied by distance again in metres and divided by time in seconds. The unit is written in symbols as $m^2/s$ or $m^22s^{-1}$. It may be better understood when phrased as $\textit{metres per second times metres}$, i.e. the momentum of an object with respect to a position.
Kvadratni Meter Na Sekundo
Meter Persegi per Saat
Metr Kwadratowy Na Sekundę
Metrekare Bölü Saniye
Metro Cuadrado Por Segundo
Metro Quadrado Por Segundo
Metro Quadrato Al Secondo
Metru Pătrat Pe Secundă
Mètre Carré Par Seconde
Quadratmeter Je Sekunde
Square Meter per Second
Square Metre per Second
Čtvereční Metr Za Sekundu
Квадратный Метр В Секунду
متر مربع بر ثانیه
متر مربع في الثانية
वर्ग मीटर प्रति सैकिण्ड
平方メートル毎秒
平方米每秒
The unit $\textit{Square Metre per Second Bar}$ typically refers to a measure of fluid permeability in the context of materials science or engineering. It is the volume of fluid (in square metres) that can pass through a material in one second under a pressure difference of one bar. This unit is particularly important in fields such as petrophysics, hydrogeology, and materials engineering, where understanding the flow of fluids through porous media is crucial. A $Bar$ is not an SI unit but is a unit of pressure that is widely used in various scientific and engineering contexts. A bar is equal to $100,000\ pascals$, (symbol $Pa$), approximately equal to the atmospheric pressure on Earth at sea level.
The unit $\textit{Square Metre per Second Kelvin}$ is a heat transfer coefficient that is area-dependent and varies with time and temperature difference. Heat transfer is typically defined in terms of watts per square meter per kelvin ($W/m^{2}K$), representing the rate of heat transfer across a surface per unit area per unit temperature difference.
The unit $\textit{Square Metre per Second Pascal}$, symbol $m^{2}/s\cdot Pa$, is a measure of permeability, which describes the ability of a material to allow fluids to pass through it under a pressure gradient. It's particularly relevant in fields like hydrogeology, petroleum engineering, and civil engineering, where understanding fluid flow through porous materials is essential.
Square Meters per Square Second
Square Metres per Square Second
Square Metre per Square Second Kelvin
Square Meter per Steradian
Square Metre per Steradian
Square Meter per Steradian Joule
Square Metre per Steradian Joule
Metro Quadrato Al Volt E Al Secondo
Quadratmeter Je Volt Und Sekunde
Square Meter per Volt Second
Square Metre per Volt Second
Kvadratni Meter Na Watt
Meter Persegi per Watt
Metr Kwadratowy Na Wat
Metrekare per Watt
Metro Cuadrado Porvatio
Metro Quadrado Por Watt
Metro Quadrato Al Watt
Metru Pătrat Pe Watt
Mètre Carré Par Watt
Quadratmeter Je Watt
Square Metre per Watt
Čtvereční Metr Na Watt
Квадратный Метр На Ватт
Square Metre Seconds per Radian
"Square Meter Steradian" is a unit for 'Area Angle' expressed as $m^{2}-sr$.
Square Meter Steradian
Square Metre Steradian
The SI unit of volume, equal to 1.0e6 cm3, 1000 liters, 35.3147 ft3, or 1.30795 yd3. A cubic meter holds about 264.17 U.S. liquid gallons or 219.99 British Imperial gallons.
Cubic Meter
Cubic Metre
Kubikmeter
Kubični Meter
Meter Kubik
Metr Krychlový
Metr Sześcienny
Metreküp
Metro Cubo
Metro Cúbico
Metru Cub
Metrum Cubicum
Mètre Cube
Κυβικό Μετρο
Кубичен Метър
Кубический Метр
מטר מעוקב
متر مكعب
متر مکعب
घन मीटर
立方メートル
立方米
power of the SI base unit metre with the exponent 3 divided by the unit bar
Cubic Meter per Coulomb
Cubic Metre per Coulomb
power of the SI base unit metre with the exponent 3 divided by the unit day
Cubic Meter per Day
Cubic Metre per Day
power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the unit bar
power of the SI base unit metre with the exponent 3 divided by the product out of the unit day and the SI base unit kelvin
Cubic Meter per Hectare
Cubic Metre per Hectare
power of the SI base unit metre with the exponent 3 divided by the unit hectare and by the unit year
Cubic Meter per Hectare Year
Cubic Metre per Hectare Year
Cubic Meter Per Hour (m3/h) is a unit in the category of Volume flow rate. It is also known as cubic meters per hour, cubic metre per hour, cubic metres per hour, cubic meter/hour, cubic metre/hour, cubic meter/h, cubic metre/h, flowrate. Cubic Meter Per Hour (m3/h) has a dimension of L3T-1 where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit m3/s by multiplying its value by a factor of 0.00027777777.
Cubic Meter per Hour
Cubic Metre per Hour
power of the SI base unit metre with the exponent 3 diveded by the product out of the unit hour and the unit bar
power of the SI base unit metre with the exponent 3 divided by the product out of the unit hour and the SI base unit kelvin
Cubic Meter per Kelvin
Cubic Metre per Kelvin
Cubic Meter Per Kilogram (m3/kg) is a unit in the category of Specific volume. It is also known as cubic meters per kilogram, cubic metre per kilogram, cubic metres per kilogram, cubic meter/kilogram, cubic metre/kilogram. This unit is commonly used in the SI unit system. Cubic Meter Per Kilogram (m3/kg) has a dimension of M-1L3 where $M$ is mass, and $L$ is length. This unit is the standard SI unit in this category.
Cubic Meter per KiloGram
Cubic Metre per KiloGram
Cubic Meter per KiloGram Square Second
Cubic Metre per KiloGram Square Second
power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 2
Cubic Meter per Square Meter
Cubic Metre per Square Metre
power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
Cubic Meter per Cubic Meter
Cubic Metre per Cubic Metre
power of the SI base unit metre with the exponent 3 divided by the unit minute
Cubic Meter per Minute
Cubic Metre per Minute
power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the unit bar
power of the SI base unit metre with the exponent 3 divided by the product out of the unit minute and the SI base unit kelvin
The molar volume, symbol $Vm$, is the volume occupied by one mole of a substance (chemical element or chemical compound) at a given temperature and pressure. It is equal to the molar mass (M) divided by the mass density. It has the SI unit cubic metres per mole $m3/mol$, although it is more practical to use the units cubic decimetres per mole $dm3/mol$ for gases and cubic centimetres per mole $cm3/mol$ for liquids and solids .
Cubic Meter per Mole
Cubic Metre per Mole
Kubikmeter Je Mol
Kubični Meter Na Mol
Meter Kubik per Mole
Metr Krychlový Na Mol
Metr Sześcienny Na Mol
Metreküp Bölü Metre Küp
Metro Cubo Alla Mole
Metro Cúbico Por Mol
Metru Cub Pe Mol
Mètre Cube Par Mole
Кубический Метр На Моль
متر مكعب لكل مول
متر مکعب بر مول
घन मीटर प्रति मोल (इकाई)
立方メートル 毎立方メートル
立方米每摩尔
A unit that is the SI base unit metre with the exponent 3 divided by the SI base unit mol multiplied by the SI base unit second.
Cubic Meter per Mole Second
Cubic Metre per Mole Second
power of the SI base unit meter by exponent 3 divided by the SI derived unit pascal
A cubic metre per second ($m^{3}s^{-1}, m^{3}/s$), cumecs or cubic meter per second in American English) is a derived SI unit of flow rate equal to that of a stere or cube with sides of one metre ( u0303 39.37 in) in length exchanged or moving each second. It is popularly used for water flow, especially in rivers and streams, and fractions for HVAC values measuring air flow.
Cubic Meter per Second
Cubic Metre per Second
power of the SI base unit metre with the exponent 3 divided by the product out of the SI base unit second and the unit bar
power of the SI base unit metre with the expontent 3 divided by the product out of the SI base unit second and the SI base unit kelvin
unit of volume flow cubic meters by the SI base unit second related to the transmission surface in square metres
power of the SI base unit meter by exponent 3 divided by the product of the SI base unit second and the SI derived unit pascal
$\textit{Cubic Meter per Square Second}$ is a C.G.S System unit for $\textit{Standard Gravitational Parameter}$ expressed as $m^3/s^2$
Cubic Meter per Square Second
Cubic Metre per Square Second
power of the SI base unit metre with the exponent 3 divided by the unit year
cubic meter divided by the unit year with 365 days
Cubic Metre per Year
Kubieke Meter per Jaar
A unit associated with area moments of inertia.
Quartic Meter
Quartic Metre
Metres to the Power Four per Second
Quintic Meter
Quintic Metre
Sextic Meter
Sextic Metre
"Mach" is a unit for speed as a multiple of the ambient speed of sound, expressed as $mach$.
Mach
"Mesh" is a measure of particle size or fineness of a woven product.
Mesh
"Mho" is a C.G.S System unit for 'Electric Conductivity' expressed as $mho$.
Mho
"StatMHO" is the unit of conductance, admittance, and susceptance in the C.G.S e.s.u system of units. One $statmho$ is the conductance between two points in a conductor when a constant potential difference of $1 \; statvolt$ applied between the points produces in the conductor a current of $1 \; statampere$, the conductor not being the source of any electromotive force, approximately $1.1126 \times 10^{-12} mho$.
Statmho
The exact length of the land mile varied slightly among English-speaking countries until the international yard and pound agreement in 1959 established the yard as exactly 0.9144 metres, giving a mile of exactly 1,609.344 metres. The United States adopted this international mile for most purposes, but retained the pre-1959 mile for some land-survey data, terming it the US survey mile. In the US, statute mile formally refers to the survey mile, about 3.219 mm (1/8 inch) longer than the international mile (the international mile is exactly 0.0002% less than the US survey mile).
International Mile
Miles per hour is an imperial unit of speed expressing the number of statute miles covered in one hour. It is currently the standard unit used for speed limits, and to express speeds generally, on roads in the United Kingdom and the United States. A common abbreviation is mph or MPH.
Mile per Hour
Miles per minute is an imperial unit of speed expressing the number of statute miles covered in one minute.
Mile per Minute
Miles per second is an imperial unit of speed expressing the number of statute miles covered in one second.
Mile per Second
The square mile (abbreviated as sq mi and sometimes as mi) is an imperial and US unit of measure for an area equal to the area of a square of one statute mile. It should not be confused with miles square, which refers to the number of miles on each side squared. For instance, 20 miles square (20 × 20 miles) is equal to 400 square miles. One square mile is equivalent to: 4,014,489,600 square inches 27,878,400 square feet, 3,097,600 square yards, 640 acres, 258.9988110336 hectares, 2560 roods, 25,899,881,103.36 square centimetres, 2,589,988.110336 square metres, 2.589988110336 square kilometres When applied to a portion of the earth's surface, which is curved rather than flat, 'square mile' is an informal synonym for section.
Square Mile
A cubic mile is an imperial / U.S. customary unit of volume, used in the United States, Canada, and the United Kingdom. It is defined as the volume of a cube with sides of 1 mile in length.
Cubic Mile
The Mil unit of plane angle, as defined by NATO to be 1/6400 of a circle.
Mil Angle (nato)
Counting unit for a count of one million
A circular mil is a unit of area, equal to the area of a circle with a diameter of one mil (one thousandth of an inch). It is a convenient unit for referring to the area of a wire with a circular cross section, because the area in circular mils can be calculated without reference to pi ($\pi$). The area in circular mils, A, of a circle with a diameter of d mils, is given by the formula: Electricians in Canada and the United States are familiar with the circular mil because the National Electrical Code (NEC) uses the circular mil to define wire sizes larger than 0000 AWG. In many NEC publications and uses, large wires may be expressed in thousands of circular mils, which is abbreviated in two different ways: MCM or kcmil. For example, one common wire size used in the NEC has a cross-section of 250,000 circular mils, written as 250 kcmil or 250 MCM, which is the first size larger than 0000 AWG used within the NEC.
Circular Mil
A minute is a unit of measurement of time. The minute is a unit of time equal to 1/60 (the first sexagesimal fraction of an hour or 60 seconds. In the UTC time scale, a minute on rare occasions has 59 or 61 seconds; see leap second. The minute is not an SI unit; however, it is accepted for use with SI units. The SI symbol for minute or minutes is min (for time measurement) or the prime symbol after a number, e.g. 5' (for angle measurement, even if it is informally used for time).
Minute
Minute Angle
Sidereal time is a time-keeping system astronomers use to keep track of the direction to point their telescopes to view a given star in the night sky. A mean sidereal day is about $23 h 56 m 4.1 s$ in length. However, due to variations in the rotation rate of the Earth, the rate of an ideal sidereal clock deviates from any simple multiple of a civil clock. In practice, the difference is kept track of by the difference UTC-UT1, which is measured by radio telescopes and kept on file and available to the public at the IERS and at the United States Naval Observatory. A Sidereal Minute is $1/60^{th}$ of a Sidereal Hour, which is $1/24^{th}$ of a Sidereal Day.
Sidereal Minute
A unit of distance used primarily at sea and in aviation. The nautical mile is defined to be the average distance on the Earth's surface represented by one minute of latitude. In 1929 an international conference in Monaco redefined the nautical mile to be exactly 1852 meters or 6076.115 49 feet, a distance known as the international nautical mile. The international nautical mile equals about 1.1508 statute miles. There are usually 3 nautical miles in a league. The unit is designed to equal 1/60 degree, although actual degrees of latitude vary from about 59.7 to 60.3 nautical miles. (Note: using data from the Geodetic Reference System 1980, the "true" length of a nautical mile would be 1852.216 meters.)
Nautical Mile
The knot is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. The abbreviation kn is preferred by the International Hydrographic Organization (IHO), which includes every major seafaring nation; but the abbreviations kt (singular) and kts (plural) are also widely used conflicting with the SI symbol for kilotonne which is also "kt". The knot is a non-SI unit accepted for use with the International System of Units (SI). Worldwide, the knot is used in meteorology, and in maritime and air navigation-for example, a vessel travelling at 1 knot along a meridian travels one minute of geographic latitude in one hour.
Nautical Mile per Hour
The SI derived unit for speed is the meter/second. 1 meter/second is equal to 0.0323974082073 nautical mile per minute.
Nautical Mile per Minute
unit of volume according to the Imperial system of units
The exact length of the land mile varied slightly among English-speaking countries until the international yard and pound agreement in 1959 established the yard as exactly 0.9144 metres, giving a mile of exactly 1,609.344 metres. The United States adopted this international mile for most purposes, but retained the pre-1959 mile for some land-survey data, terming it the US survey mile. In the US, statute mile formally refers to the survey mile, about 3.219 mm (1/8 inch) longer than the international mile (the international mile is exactly 0.0002\% less than the US survey mile).
Mile Us Statute
unit of the length according to the Imperial system of units divided by the power of the SI base unit second by exponent 2
Square Mile Us Statute
A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks. Also known as the 'Synodic Month' and calculated as 29.53059 days.
Month
The $\textit{Mohm}$ is a unit of mechanical mobility for sound waves, being the reciprocal of the mechanical $ohm$ unit of impedance, i.e., for an acoustic medium, the ratio of the flux or volumic speed (area times particle speed) of the resulting waves through it to the effective sound pressure (i.e. force) causing them, the unit being qualified, according to the units used, as m.k.s. or c.g.s. The mechanical ohm is defined as: $$Mohm \equiv 1\,dyn\cdot\,s\cdot cm^{-1} \text{ or } 10^{-3} N\cdot s\cdot m^{-1}$$.
Mohm
The $\textit{mole}$ is a unit of measurement used in chemistry to express amounts of a chemical substance. The official definition, adopted as part of the SI system in 1971, is that one mole of a substance contains just as many elementary entities (atoms, molecules, ions, or other kinds of particles) as there are atoms in 12 grams of carbon-12 (carbon-12 is the most common atomic form of carbon, consisting of atoms having 6 protons and 6 neutrons). This corresponds to a value of $6.02214179(30) \times 10^{23}$ elementary entities of the substance. It is one of the base units in the International System of Units, and has the unit symbol $mol$. A Mole is the SI base unit of the amount of a substance (as distinct from its mass or weight). Moles measure the actual number of atoms or molecules in an object. An earlier name is gram molecular weight, because one mole of a chemical compound is the same number of grams as the molecular weight of a molecule of that compound measured in atomic mass units.
Mol
Mole
Moles
Mól
Μολ
Мол
Моль
מול
مول
मोल (इकाई)
モル
摩尔
$\textit{Mole Degree Celsius}$ is a C.G.S System unit for $\textit{Temperature Amount Of Substance}$ expressed as $mol-degC$.
Mole Degree Celsius
The $\textit{Mole Kelvin}$ is a unit for $\textit{Temperature Amount Of Substance}$ expressed as $mol-K$.
Mole Kelvin
SI base unit mol divided by the 0.001-fold of the power of the SI base unit metre with the exponent 3
Mole per Cubic DeciMeter
Mole per Cubic DeciMetre
SI unit of the quantity of matter per SI unit of mass per unit of time expressed in hour.
Moles per Gram Hour
SI base unit mole divided by the unit for time hour
Mole per Hour
Mole Per Kilogram ($mol/kg$) is a unit of Molality
Mole per KiloGram
SI base unit mol divided by the product of the SI base unit kilogram and the unit bar
SI base unit mol divided by the product of the SI base unit kilogram and the SI base unit Kelvin
Mole Per Kilogram Pascal ($mol/kg-pa$) is a unit of Molar Mass variation due to Pressure.
Mole per KiloGram Pascal
SI base unit mol divided by the unit litre
Mole per Liter
Mole per Litre
SI base unit mol divided by the product of the unit litre and the unit bar
SI base unit mol divided by the product of the unit litre and the SI base unit Kelvin
SI unit of quantity of matter per SI unit area.
Moles per Square Metre
quantity of matter per unit area per unit of time.
Moles per Square Meter Day
Moles per Square Metre Day
SI unit of quantity of matter per SI unit area per SI unit of time.
Moles per Square Metre Second
Moles per Square Metre Second Metre
Moles per Square Metre Second Metre Steradian
Moles per Square Metre Second Steradian
The SI derived unit for amount-of-substance concentration is the mole/cubic meter.
Mole per Cubic Meter
Mole per Cubic Metre
SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
SI base unit mol divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
SI base unit mol divided by the product of the power from the SI base unit metre with exponent 3 and the SI derived unit pascal
SI unit of quantity of matter per SI unit volume per SI unit of time.
Moles per Cubic Metre Second
SI base unit mole divided by the unit for time minute
Mole per Minute
Unavailable.
Moles per Mole
SI base unit mol divided by the SI base unit second
Mole per Second
Mole Per Tonne (mol/t) is a unit of Molality
Mol per Tonne
The $\textit{Pound Mole}$ is a unit for $\textit{Mass Amount Of Substance}$, expressed as $lb-mol$.
Pound Mole
$\textit{Pound Mole Degree Fahrenheit}$ is a unit for 'Mass Amount Of Substance Temperature' expressed as $lb-mol-degF$.
Pound Mole Degree Fahrenheit
non SI-conform unit of the material molar flux divided by the avoirdupois pound for mass according to the avoirdupois unit system
non SI-conform unit of the power of the amount of substance non-SI compliant unit of the molar flux relating that a pound mole of a chemical composition the same number of pound corresponds like the molecular weight of a molecule of this composition in atomic mass units
non SI-conformunit of the power of the amount of substance non-SI compliant unit of the molar flux relating that a pound mole of a chemical composition the same number of pound corresponds like the molecular weight of a molecule of this composition in atomic mass units
unit momme (pearl) specifically expresses the mass of cultured pearls
unit momme (textile) specifically express the weight of one square metre of silk
Mean Gregorian Month
Mean Julian Month
A unit of time corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks and calculated as 29.53059 days.
Synodic Month
"Maxwell" is a C.G.S System unit for 'Magnetic Flux' expressed as $Mx$.
Maxwell
not SI-conforming unit of pressure, whereas a value of 1 mH₂O is equivalent to the static pressure produced by one metre high watercolumn
1,048,576-fold of the unit bit divided by the SI base unit metre
1,048,576-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,048,576-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
The mebibyte is a multiple of the unit byte for digital information equivalent to $1024^{2} bytes$ or $2^{20} bytes$.
Mebibyte
1 000 000-fold of the SI base unit ampere
1,000,000-fold of the SI base unit ampere
MegaAmpere
1,000,000-fold of the SI base unit ampere divided by the power of the SI base unit metre with the exponent 2
MegaAmpere per Square Meter
MegaAmpere per Square Metre
MegaBar
1,000,000-fold of the unit baud for the symbol rate in communications engineering and telecommunication
A megabit per second (Mbit/s or Mb/s; not to be confused with mbit/s which means millibit per second, or with Mbitps which means megabit picosecond) is a unit of data transfer rate equal to 1,000,000 bits per second or 1,000 kilobits per second or 125,000 bytes per second or 125 kilobytes per second.
MegaBit per Second
1,000,000-fold of the derived unit becquerel
MegaBecquerel
1,000,000-fold of the SI derived unit becquerel divided by the SI base unit kilogram
Mega British Thermal Unit (international Definition) per Hour
The megabyte is defined here as one million Bytes. Also, see unit:MebiBYTE.
Mega Byte
1,000,000-fold of the unit byte devided by the SI base unit second
MegaCoulomb
1 000 000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
MegaCoulomb per Square Meter
MegaCoulomb per Square Metre
1,000,000-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
MegaCoulomb per Cubic Meter
MegaCoulomb per Cubic Metre
MilliOn Us Dollars
MilliOn Us Dollars per Flight
MilliOn Us Dollars per Year
$\textit{Mega Electron Volt}$ is a unit for 'Energy And Work' expressed as $MeV$.
Mega Electron Volt
$\textit{Mega Electron Volt Femtometer}$ is a unit for 'Length Energy' expressed as $MeV fm$.
Mega Electron Volt FemtoMeter
Mega Electron Volt FemtoMetre
"Mega Electron Volt per Centimeter" is a unit for 'Linear Energy Transfer' expressed as $MeV/cm$.
Mega Electron Volt per CentiMeter
Mega Electron Volt per CentiMetre
"Mega Electron Volt per Speed of Light" is a unit for 'Linear Momentum' expressed as $MeV/c$.
Mega Electron Volt per Speed of Light
1,000,000-fold of the unit floating point operations divided by the SI base unit second
MegaFloating Point Operations per Second
MegaGram
1 000-fold of the SI base unit kilogram divided by the 10,000-fold of the power of the SI base unit metre with the exponent 2
MegaGram per Hectare
Annual flux equivalent to 1000kg per hectare (10000 square meters) or one tonne per hectare per year, typically used to express a crop yield.
MegaGram per Hectare per Year
1 000-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
MegaGram per Cubic Meter
MegaGram per Cubic Metre
"Megahertz" is a C.G.S System unit for 'Frequency' expressed as $MHz$.
MegaHertz
product of the 1,000,000-fold of the SI derived unit hertz and the 1,000-fold of the SI base unit metre
product of the 1,000,000-fold of the SI derived unit hertz and the 1 000-fold of the SI base unit metre
MegaHertz Meter
MegaHertz Metre
$\textit{Mega Hertz per Kelvin}$ is a unit for 'Inverse Time Temperature' expressed as $MHz K^{-1}$.
Mega Hertz per Kelvin
"Mega Hertz per Tesla" is a unit for 'Electric Charge Per Mass' expressed as $MHz T^{-1}$.
Mega Hertz per Tesla
1,000,000-fold of the derived unit joule
MegaJoule
SI derived unit MegaJoule divided by the 3600 times the SI base unit second
MegaJoule per Hour
MegaJoule Per Kelvin (MegaJ/K) is a unit in the category of Entropy.
MegaJoule per Kelvin
1,000,000-fold of the derived SI unit joule divided by the SI base unit kilogram
MegaJoule per KiloGram
MegaJoule Per Square Meter ($MegaJ/m^2$) is a unit in the category of Energy density.
1,000,000-fold of the SI derived unit joule divided by the power of the SI base unit metre with the exponent 2
MegaJoule per Square Meter
MegaJoule per Square Metre
MegaJoule Per Square Meter Per Day (\(MegaJ/m^2/day\)) is a unit in the category of Energy density over time.
MegaJoule per Square Meter per Day
MegaJoule per Square Metre per Day
1,000,000-fold of the SI derived unit joule divided by the power of the SI base unit metre with the exponent 3
MegaJoule per Cubic Meter
MegaJoule per Cubic Metre
quotient of the 1,000,000-fold of the derived SI unit joule divided by the SI base unit second
MegaJoule per Second
MegaLitre
Mega Pound Force
1,000,000-fold of the SI derived unit newton
MegaNewton
1,000,000-fold of the product of the SI derived unit newton and the SI base unit metre
MegaNewton Meter
MegaNewton Metre
1,000,000-fold of the SI derived unit newton divided by the SI base unit metre to the power two
MegaOhm
1,000,000-fold of the product of the SI derived unit ohm and the 1,000-fold of the SI base unit metre
1,000,000-fold of the product of the SI derived unit ohm and the SI unit metre
1,000,000-fold of SI derived unit ohm per metrical non SI unit bar
1,000,000-fold of the SI derived unit ohm per SI base unit kelvin
1,000,000-fold of the SI derived unit ohm divided by the 1,000-fold of the SI base unit metre.
1,000,000-fold of the SI derived unit ohm divided by the SI base unit metre
1,000,000-fold of the derived unit pascal
MegaPascal
product out of the 1,000,000-fold of the SI derived unit pascal and the unit litre divided by the SI base unit second
MegaPascal Liter per Second
MegaPascal Litre per Second
1,000,000-fold of the derived unit Pascal Square Root Meter
MegaPascal Square Root Meter
MegaPascal Square Root Metre
product out of the 1,000,000-fold of the SI derived unit pascal and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
MegaPascal Cubic Meter per Second
MegaPascal Cubic Metre per Second
1,000,000-fold of the SI derived unit pascal divided by the unit bar
MegaPascal per Bar
1,000,000-fold of the SI derived unit pascal divided by the SI base unit kelvin
MegaPascal per Kelvin
Megapounds of force per square inch is a unit for pressure in the Anglo-American system of units.
Mpsi
MegaSiemens
1,000,000-fold of the SI derived unit siemens divided by the SI base unit metre
MegaSiemens per Meter
MegaSiemens per Metre
1,000,000-fold of the SI derived unit second
The tonne of oil equivalent (toe) is a unit of energy: the amount of energy released by burning one tonne of crude oil, approximately 42 GJ (as different crude oils have different calorific values, the exact value of the toe is defined by convention; unfortunately there are several slightly different definitions as discussed below). The toe is sometimes used for large amounts of energy, as it can be more intuitive to visualise, say, the energy released by burning 1000 tonnes of oil than 42,000 billion joules (the SI unit of energy). Multiples of the toe are used, in particular the megatoe (Mtoe, one million toe) and the gigatoe (Gtoe, one billion toe).
MegaTon of Oil Equivalent
1,000,000,000-fold of the SI base unit kilogram divided by the unit year
1,000,000 metric tonne divided by the unit year with 365 days
MegaTonne Pro Jahr
MegaTonne per Year
Mégatonne Par An
MegaVolt
1,000,000-fold of the product of the SI derived unit volt and the SI base unit ampere
MegaVolt Ampere
product of the 1,000,000-fold of the unit for apparent by ampere and the unit hour
MegaVolt Ampere Hour
1,000,000-fold of the unit volt ampere reactive
MegaVolt Ampere Reactive
product of the 1,000,000-fold of the unit volt ampere reactive and the unit hour
MegaVolt Ampere Reactive Hour
1,000,000-fold of the SI derived unit volt divided by the SI base unit metre
MegaVolt per Meter
MegaVolt per Metre
MegaW
1,000,000-fold of the product of the SI derived unit watt and the unit hour
1 000 000-fold of the product of the SI derived unit watt and the unit hour
MegaWatt Hour
1,000,000-fold of the derived unit year.
MilliOn Years
Mega Year
megannum
MicroAmpere
0.000001-fold of the SI base unit ampere divided by the SI base unit kelvin
MicroAtmospheres
MicroBar
0.000001-fold of the SI derived unit becquerel
MicroBecquerel
One radioactive disintegration per hundred thousand seconds from an SI standard unit of mass of sample.
MicroBecquerels per KiloGram
MicroBecquerels per Litre
MicroCoulomb
0.000001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
MicroCoulomb per Square Meter
MicroCoulomb per Square Metre
0.000001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
MicroCoulomb per Cubic Meter
MicroCoulomb per Cubic Metre
Another commonly used measure of radioactivity, the microcurie: $1 \micro Ci = 3.7 \times 10 disintegrations per second = 2.22 \times 10 disintegrations per minute$. A radiotherapy machine may have roughly 1000 Ci of a radioisotope such as caesium-137 or cobalt-60. This quantity of radioactivity can produce serious health effects with only a few minutes of close-range, un-shielded exposure. The typical human body contains roughly $0.1\micro Ci$ of naturally occurring potassium-40.
MicroCurie
The "microfarad" (symbolized $\mu F$) is a unit of capacitance, equivalent to 0.000001 (10 to the -6th power) farad. The microfarad is a moderate unit of capacitance. In utility alternating-current (AC) and audio-frequency (AF) circuits, capacitors with values on the order of $1 \mu F$ or more are common. At radio frequencies (RF), a smaller unit, the picofarad (pF), is often used.
MicroFarad
0.000001-fold of the SI derived unit farad divided by the 1,000-fold of the SI base unit metre
MicroFarad per KiloMeter
MicroFarad per KiloMetre
0.000001-fold of the SI derived unit farad divided by the SI base unit metre
MicroFarad per Meter
MicroFarad per Metre
"Microgravity" is a unit for 'Linear Acceleration' expressed as $microG$.
MicroGravity
A rate of change of one millionth part of a unit of gravitational acceleration equal to one centimetre per second per second over a distance of one metre.
MicroGals per Metre
Microgalileo per metre
0.000000001-fold of the SI base unit kilogram
MicroGram
A unit of mass per area, equivalent to 0.01 grammes per square metre
MicroGram per Square CentiMetre
A rate of change of 1e-9 of the SI unit of mass over 0.00001 of the SI unit of area in a period of one calendar week.
MicroGrams per Square CentiMeter Week
MicroGrams per Square CentiMetre Week
0.0000000001-fold of the SI base unit kilogram divided by the unit decilitre
MicroGram per DeciLiter
MicroGram per DeciLitre
One part per 10**6 (million) by mass of the measurand in the matrix.
MicroGrams per Gram
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.001-fold of SI base unit kilogram per day
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.001-fold of the SI base unit kilogram per day (8640 seconds)
MicroGram per Gram per Day
0.0000000001-fold of the SI base unit kilogram divided by 0.0001-fold of the SI base unit kilogram over a period of 1 hour
MicroGrams per Gram per Hour
Microgram Per Square Inch (µg/in²) is a unit in the category of surface density.
MicroGram per Square Inch
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by the SI base unit kilogram
MicroGram per KiloGram
0.000000001-fold of the SI base unit kilogram divided by the unit litre
MicroGram per Liter
MicroGram per Litre
A rate of change of mass of a measurand equivalent to 10^-9 kilogram (the SI unit of mass) per litre volume of matrix over a period of 1 day.
MicroGrams per Litre per Hour
A rate of change of mass of a measurand equivalent to 10^-9 kilogram (the SI unit of mass) per litre volume of matrix over a period of 1 hour.
MicroGrams per Litre Hour
MicroGrams per Square Metre Day
0.000000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
MicroGram per Cubic Meter
MicroGram per Cubic Metre
0.000000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
MicroGrams per Cubic Metre Hour
0.000000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.000001-fold of SI base unit kilogram
mass ratio as 0.000000001-fold of the SI base unit kilogram divided by 0.000001-fold of the SI base unit kilogram
MicroGram per MilliGram
One 10**6 part of the SI standard unit of mass of the measurand per millilitre volume of matrix.
0.000000000001-fold of the SI base unit kilogram divided by the unit microlitre
MicroGram per MilliLiter
MicroGram per MilliLitre
0.000001 fold of the SI unit of radiation dose. Radiation carries energy, and when it is absorbed by matter the matter receives this energy. The dose is the amount of energy deposited per unit of mass. One gray is defined to be the dose of one joule of energy absorbed per kilogram of matter, or 100 rad. The unit is named for the British physician L. Harold Gray (1905-1965), an authority on the use of radiation in the treatment of cancer.
MicroGray
0.000001-fold of the SI derived unit gray divided by the unit hour
0.000001-fold of the SI derived unit gray divided by the unit minute
0.000001-fold of the SI derived unit gray divided by the SI base unit second
The SI derived unit for inductance is the henry. 1 henry is equal to 1000000 microhenry.
MicroHenry
0.000001-fold of the SI derived unit henry divided by the 1,000-fold of the SI derived unit ohm
MicroHenry per KiloOhm
0.000001-fold of the SI derived unit henry divided by the SI base unit metre
MicroHenry per Meter
MicroHenry per Metre
0.000001-fold of the SI derived unit henry divided by the SI derived unit ohm
MicroHenry per Ohm
"Microinch" is an Imperial unit for 'Length' expressed as $in^{-6}$.
MicroInch
0.000001-fold of the SI derived unit joule
Micro Joule
Mikrojoule
0.000001-fold of the SI derived unit joule divided by the SI base unit second
MicroKatal per Liter
MicroKatal per Litre
MicroLitre
volume ratio as 0.000001-fold of the unit litre divided by the unit litre
MicroLitre per Liter
MicroLitre per Litre
"Micrometer" is a unit for 'Length' expressed as $microm$.
MicroMeter
MicroMetre
0.000001-fold of the SI base unit metre divided by the SI base unit kelvin
MicroMeter per Kelvin
MicroMetre per Kelvin
MicroMoles per Litre Day
0.000001-fold of the SI base unit metre divided by the SI base unit metre
Micrometre per minute is a derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in micronmeters divided by time in minutes.
MicroMeter per Minute
MicroMetre per Minute
Micron per Minute
micron per minute
Square MicroNs per MilliLitre
Micro Meter per Newton
Micro Metre per Newton
Mikrometer Pro Newton
Micrometre per second is anderived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.
MicroMeter per Second
MicroMetre per Second
0.000000000001-fold of the power of the SI base unit metre with the exponent 2
Square MicroMeter
Square MicroMetre
Cubic MicroMetres (microNs)
Cubic MicroNs per Cubic Metre
Cubic MicroNs per MilliLitre
0.000001-fold of the obsolete unit mho of the electric conductance
MicroMho
MicroMole
Micromole Per Gram ($umol/g$) is a unit of Molality
0.000001-fold of the SI base unit mol divided by the 0.001-fold of the SI base unit kilogram
MicroMoles per Gram
MicroMoles per Gram Hour
MicroMoles per Gram Second
MicroMoles per KiloGram
MicroMoles per Litre
MicroMoles per Litre Hour
One part per 10**6 (million) of the SI unit of quantity of matter (the mole) per SI unit area.
MicroMoles per Square Metre
MicroMoles per Square Metre Day
MicroMoles per Square Metre Hour
One part per 10**6 (million) of the SI unit of quantity of matter (the mole) per SI unit area per SI unit of time. This term is based on the number of photons in a certain waveband incident per unit time (s) on a unit area (m2) divided by the Avogadro constant (6.022 x 1023 mol-1). It is used commonly to describe PAR in the 400-700 nm waveband. Definition Source: Thimijan, Richard W., and Royal D. Heins. 1982. Photometric, Radiometric, and Quantum Light Units of Measure: A Review of Procedures for Interconversion. HortScience 18:818-822.
MicroMoles per Square Metre Second
One part per 10**6 (million) of the SI unit of quantity of matter (the mole) per SI unit area per SI unit of time squared.
MicroMole per Square Meter per Square Second
MicroMole per Square Metre per Square Second
MicroMoles per Mole
MicroMole per MicroMole of Biomass Day
This unit is used commonly to describe Photosynthetic Photon Flux (PPF) - the total number of photons emitted by a light source each second within the PAR wavelength range.
MicroMoles per Second
Variance for a molar flux density, (uM/m^2/s)^2 .
(microMole per Metre Squared per Second) Squared
0.000001-fold of the SI derived unit newton
MicroNewton
0.000001-fold of the product out of the derived SI newton and the SI base unit metre
MicroNewton Meter
MicroNewton Metre
0.000001-fold of the SI derived unit newton divided by the SI base unit metre to the power two
0.000001-fold of the SI derived unit ohm
MicroOhm
0.000001-fold of the product out of the SI derived unit ohm and the SI base unit metre
0.000001-fold of the SI derived unit pascal
MicroPascal
0.000001-fold of the CGS unit of the dynamic viscosity poise
MicroPoise
See NIST section SP811 section7.10
MicroRadian
0.000001-fold of the SI derived unit siemens
MicroSiemens
0.000001-fold of the SI derived unit Siemens divided by the 0.01-fold of the SI base unit metre
Unit of electrical conductivity equal to 0.000001-fold of the SI derived unit siemens divided by 0,01-fold of the SI base unit meter
MicroSiemens per CentiMeter
MicroSiemens per CentiMetre
0.000001-fold of the SI derived unit Siemens divided by the SI base unit metre
MicroSiemens per Meter
MicroSiemens per Metre
Conductivity variance, or (MicroS-PER-CentiM)2
MicroSiemen Squared per CentiMeter Squared
MicroSiemen Squared per CentiMetre Squared
"Microsecond" is a unit for 'Time' expressed as $microsec$.
MicroSecond
Although the sievert has the same dimensions as the gray (i.e. joules per kilogram), it measures a different quantity. To avoid any risk of confusion between the absorbed dose and the equivalent dose, the corresponding special units, namely the gray instead of the joule per kilogram for absorbed dose and the sievert instead of the joule per kilogram for the dose equivalent, should be used. 0.000001-fold of the SI derived unit sievert.
MicroSievert
0.000001-fold of the derived SI unit sievert divided by the unit hour
MicroSievert per Hour
0.000001-fold of the SI derived unit sievert divided by the unit minute
0.000001-fold of the SI derived unit sievert devided by the SI base unit second
0.000001-fold of the SI derived unit tesla
MicroTesla
"MicroTorr" is a unit for 'Force Per Area' expressed as $microtorr$.
MicroTorr
0.000001-fold of the SI derived unit volt
MicroVolt
0.000001-fold of the product of the SI base unit volt with the SI base unit ampere
product of the 0.000001-fold of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
0.000001 of the unit volt ampere reactive
0.000001-fold of the unit volt ampere reactive divided by the SI base unit kelvin
0.000001-fold of the SI derived unit volt divided by the SI base unit metre
MicroVolt per Meter
MicroVolt per Metre
0.000001-fold of the SI derived unit watt
MicroWatt
A unit of spectral radiance that is the power radiating from a surface per unit of solid angle per unit of wavelength, measured in units of watts per centimeter squared per micrometer per steradian
Watts per CentiMeter Squared MicroMeter Steradian
0.000001-fold of the SI derived unit watt divided by the power of the SI base unit metre with the exponent 2
MicroWatt per Square Meter
MicroWatt per Square Metre
"Mil Length" is a C.G.S System unit for 'Length' expressed as $mil$.
Mil Length
MilliAmpere
product of the 0.001-fold of the SI base unit ampere and the unit hour
MilliAmpere Hour
$\textit{Milliampere hour per gram}$ is a practical unit of electric charge relative to the mass of the (active) parts. 1mAh/g describes the capability of a material to store charge equivalent to 1h charge with 1mA per gram. The unit is often used in electrochemistry to describe the properties of active components like electrodes.
MilliAmpere Hour per Gram
product of the 0.001-fold of the SI base unit ampere and the unit inch according to the Anglo-American and Imperial system of units with the exponent 2 according to the quotient of the unit pound-force according to the Anglo-American system of units
0.001-fold of the SI base unit ampere divided by the unit bar
0.001-fold of the SI base unit ampere divided by the unit inch according to the Anglo-American and the Imperial system of units
MilliAmpere per Inch
0.001-fold of the SI base unit ampere divided by the SI base unit kelvin
0.001-fold of the SI base unit ampere divided by the product of the unit litre and the unit minute
product of the 0.001-fold of the SI base unit ampere according to the quotient of the unit pound-force according to the Anglo-American system of units divided by the power of the unit inch according to the Anglo-American and Imperial system of units with the exponent 2
0.001-fold of the SI base unit ampere divided by the 0.001-fold of the SI base unit metre
MilliAmpere per MilliMeter
MilliAmpere per MilliMetre
product of the 0.001-fold of the SI base unit ampere and the SI base unit second
A minute of arc, arcminute, or minute arc (MOA), is a unit of angular measurement equal to one sixtieth (1/60) of one degree (circle/21,600), or $\pi /10,800 radians$. In turn, a second of arc or arcsecond is one sixtieth (1/60) of one minute of arc. Since one degree is defined as one three hundred and sixtieth (1/360) of a rotation, one minute of arc is 1/21,600 of a rotation. the milliarcsecond, abbreviated mas, is used in astronomy.
Milli Arcsecond
MilliBar
product out of the 0.001-fold of the unit bar and the unit litre divided by the SI base unit second
MilliBar Liter per Second
MilliBar Litre per Second
product of the unit bar and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
MilliBar Cubic Meter per Second
MilliBar Cubic Metre per Second
0.01-fold of the unit bar divided by the unit bar
MilliBar per Bar
0.001-fold of the unit bar divided by the unit temperature kelvin
MilliBar per Kelvin
The same as a Millibar, however the Absolute is added when there is a mixture of gauge and absolute measurements to ensure there is a clear distinction
MilliBar Absolute
MilliBecquerel
One radioactive disintegration per thousand seconds per 1000th SI unit of sample mass.
MilliBecquerels per Gram
One radioactive disintegration per thousand seconds from an SI standard unit of mass of sample.
MilliBecquerels per KiloGram
One radioactive disintegration per second from the SI unit of volume (cubic metre). Equivalent to Becquerels per cubic metre.
MilliBecquerels per Litre
One radioactive disintegration per thousand seconds in material passing through an area of one square metre during a period of one day (86400 seconds).
MilliBecquerels per Square Metre Day
MilliCoulomb
0.001-fold of the SI derived unit coulomb divided by the SI base unit kilogram
MilliCoulomb per KiloGram
0.001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 2
MilliCoulomb per Square Meter
MilliCoulomb per Square Metre
0.001-fold of the SI derived unit coulomb divided by the power of the SI base unit metre with the exponent 3
MilliCoulomb per Cubic Meter
MilliCoulomb per Cubic Metre
MilliCurie
The $\textit{Millidarcy}$ ($md$) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A millidarcy has dimensional units of $length^2$.
The millidarcy (md) is a unit of permeability named after Henry Darcy. It is not an SI unit, but it is widely used in petroleum engineering and geology. The unit has also been used in biophysics and biomechanics, where the flow of fluids such as blood through capillary beds and cerebrospinal fluid through the brain interstitial space is being examined. A millidarcy has dimensional units of length².
MilliDarcy
$\textit{Millidegree Celsius}$ is a scaled unit of measurement for temperature.
MilliDegree Celsius
MilliFarad
"Milligravity" is a unit for 'Linear Acceleration' expressed as $mG$.
MilliGravity
0.001-fold of the unit of acceleration called gal according to the CGS system of units
MilliGal
A rate of change of one millionth part of a unit of gravitational acceleration equal to one centimetre per second per second over a time duration of 30.4375 days or 2629800 seconds.
MilliGals per Month
Milligalileo
Milligalileo per month
0.000001-fold of the SI base unit kilogram
MilliGram
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
MilliGram Hour per Litre Cubic CentiMetre
quotient of the 0.000001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time hour
quotient of the 0.000001-fold of the SI base unit kilogram per litre and unit litre per unit of time hour
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time hour
MilliGram Hour per Cubic Metre Cubic CentiMetre
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time hour
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time hour
MilliGram Hour per Power of Metre with the Exponent 6
quotient of the 0.000001-fold of the SI base unit kilogram per litre and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
MilliGram Minute per Litre Cubic CentiMetre
quotient of the 0.000001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per unit of time minute
quotient of the 0.000001-fold of the SI base unit kilogram per litre and unit litre per unit of time minute
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and 0.000001-fold of power of the SI base unit metre with the exponent 3 per unit of time minute
MilliGram Minute per Cubic Metre Cubic CentiMetre
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per unit of time minute
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per unit of time minute
MilliGram Minute per Power of Metre with the Exponent 6
0.000001-fold of the SI base unit kilogram divided by the unit bar
0.000001-fold of the SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre with the exponent 2
MilliGram per Square CentiMeter
MilliGram per Square CentiMetre
0.000001-fold of the SI base unit kilogram divided by the unit day
MilliGram per Day
0.000001-fold of the SI base unit kilogram divided by the product out of the unit day and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the unit day and the SI base unit kelvin
A derived unit for amount-of-substance concentration measured in mg/dL.
MilliGrams per DeciLitre
0.000001-fold of the SI base unit kilogram divided by the 0.01-fold of the power of the SI base unit metre with the exponent 2
MilliGram per Square DeciMeter
MilliGram per Square DeciMetre
0.000001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram
MilliGram per Gram
mass-specific rate, e.g., uptake or emission
0.000001-fold of the SI base unit kilogram divided by the 0.001-fold of the SI base unit kilogram, divided by 3600-fold of the SI base unit second
MilliGram per Gram per Hour
0.000001-fold of the SI base unit kilogram divided by the 10,000-fold of the power of the SI base unit metre with the exponent 2
MilliGram per Hectare
0.000001-fold of the SI base unit kilogram divided by the unit hour
MilliGram per Hour
0.000001-fold of the SI base unit kilogram divided by the product out of the unit hour and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the unit hour and the SI base unit kelvin
0.000001-fold of the SI base unit kilogram divided by the SI base unit kelvin
0.000001-fold of the SI base unit kilogram divided by the SI base unit kilogram
MilliGram per KiloGram
mass ratio as 0.000001-fold of the SI base unit kilogram divided by the SI base unit kilogram per day
MilliGram per KiloGram per Day
0.000001-fold of the SI base unit kilogram divided by the unit litre
MilliGram per Liter
MilliGram per Litre
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per litre and and the 0.01-fold of the CGS unit of the dynamic viscosity poise
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per litre and the CGS unit of the dynamic viscosity poise
0.000001-fold of the SI base unit kilogram divided by the SI base unit metre
MilliGram per Meter
MilliGram per Metre
0.000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 2
MilliGram per Square Meter
MilliGram per Square Metre
MilliGrams per Square Metre Day
MilliGrams per Square Metre Hour
MilliGrams per Square Metre Second
0.000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
MilliGram per Cubic Meter
MilliGram per Cubic Metre
MilliGram per Kubieke Meter
0.000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.01-fold of the CGS unit of the dynamic viscosity poise
MilliGrams per Cubic Metre Day
MilliGrams per Cubic Metre Hour
0.000001-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
MilliGram per Cubic Metre MilliPascal Second
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the product of the SI derived unit pascal and the SI base unit second
[CGS] quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the CGS unit of the dynamic viscosity poise
MilliGrams per Cubic Metre Second
0.000001-fold of the SI base unit kilogram divided by the unit minute
MilliGram per Minute
0.000001-fold of the SI base unit kilogram divided by the product out of the unit minute and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the unit minute and the SI base unit kelvin
A scaled unit of mass concentration.
0.000001-fold of the SI base unit kilogram divided by the unit millilitre
MilliGram per MilliLiter
MilliGram per MilliLitre
0.000001-fold of the SI base unit kilogram divided by the SI base unit second
MilliGram per Second
0.000001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the unit bar
0.000001-fold of the SI base unit kilogram divided by the product out of the SI base unit second and the SI base unit kelvin
quotient of the 0.000001-fold of the SI base unit kilogram per litre and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
MilliGram Second per Litre Cubic CentiMetre
quotient of the 0.000001-fold of the SI base unit kilogram per litre and power of the SI base unit metre with the exponent 3 per SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per litre and unit litre per SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and the 0.000001-fold of power of the SI base unit metre with the exponent 3 per SI base unit second
MilliGram Second per Cubic Metre Cubic CentiMetre
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and unit litre per SI base unit second
quotient of the 0.000001-fold of the SI base unit kilogram per power of the SI base unit metre with the exponent 3 and power of the SI base unit metre with the exponent 3 per SI base unit second
MilliGram Second per Power of Metre with the Exponent 6
MilliGray
0.001-fold of the SI derived unit gray divided by the unit hour
0.001-fold of the SI derived unit gray divided by the unit minute
0.001-fold of the SI derived unit gray divided by the SI base unit second
A unit of inductance equal to one thousandth of a henry.
MilliHenry
0.001-fold of the SI derived unit henry divided by the 1 000-fold of the SI derived unit ohm
MilliHenry per KiloOhm
0.001-fold of the SI derived unit henry divided by the SI derived unit ohm
MilliHenry per Ohm
0.001-fold of the unit inch according to the Anglo-American and Imperial system of units
Milli-inch
mil
thou
MilliJoule
The 0.001-fold of the SI base unit joule divided by the 0.001-fold of the SI base unit kilogram.
MilliJoule per Gram
Millijoule Per Square Meter ($mJ/m^2$) is a unit in the category of Energy density. It is also known as millijoules per square meter, millijoule per square metre, millijoule/square meter, millijoule/square metre.
MilliJoule per Square Meter
MilliJoule per Square Metre
0.001-fold of the SI derived unit joule divided by the SI base unit second
0.001-fold of SI base unit kelvin divided by the unit bar
0.001-fold of SI base unit kelvin divided by the SI base unit kelvin
MilliKatal per Liter
MilliKatal per Litre
MilliLitre
0.001-fold of the unit litre divided by the unit bar
quotient of the 0.001-fold of the unit litre and the unit minute divided by the 0.0001-fold of the power of the SI base unit metre with the exponent 2
MilliLitre per Square CentiMeter Minute
MilliLitre per Square CentiMetre Minute
unit of the volume flow rate millilitre divided by second related to the transfer area as 0.0001-fold of the power of the SI base unit metre by exponent 2
MilliLitre per Square CentiMeter Second
MilliLitre per Square CentiMetre Second
0.001-fold of the unit litre divided by the unit day
MilliLitre per Day
0.001-fold of the unit litre divided by the product out of the unit day and the unit bar
0.001-fold of the unit litre divided by the product out of the unit day and the SI base unit kelvin
Milliliter Per Gram is a unit in the category of Specific Volume. It is also known as milliliters per gram, millilitre per gram, millilitres per gram, milliliter/gram, millilitre/gram.
MilliLiter per Gram
MilliLitre per Gram
0.001-fold of the unit litre divided by the unit hour
MilliLitre per Hour
0.001-fold of the unit litre divided by the product out of the unit hour and the unit bar
0.001-fold of the unit litre divided by the product out of the unit hour and the SI base unit kelvin
0.001-fold of the unit litre divided by the SI base unit kelvin
MilliLitre per Kelvin
0.001-fold of the unit of the volume litre divided by the SI base unit kilogram
MilliLitre per KiloGram
volume ratio consisting of the 0.001-fold of the unit litre divided by the unit litre
MilliLitre per Liter
MilliLitre per Litre
MilliLitres per Square Metre Day
0.001-fold of the unit litre divided by the power of the SI base unit metre with the exponent 3
MilliLitre per Cubic Meter
MilliLitre per Cubic Metre
0.001-fold of the unit litre divided by the unit minute
MilliLitre per Minute
0.001-fold of the unit litre divided by the product out of the unit minute and the unit bar
0.001-fold of the unit litre divided by the product out of the unit minute and the SI base unit kelvin
0.001-fold of the unit litre divided by the SI base unit second
MilliLitre per Second
0.001-fold of the unit litre divided by the product out of the SI base unit second and the unit bar
0.001-fold of the unit litre divided by the product out of the SI base unit second and the SI base unit kelvin
The millimetre (International spelling as used by the International Bureau of Weights and Measures) or millimeter (American spelling) (SI unit symbol mm) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. It is equal to 1000 micrometres or 1000000 nanometres. A millimetre is equal to exactly 5/127 (approximately 0.039370) of an inch.
MilliMeter
MilliMetre
0.001-fold of the SI base unit metre divided by the unit bar
A measure of change in depth over time for a specific area, typically used to express precipitation intensity or evaporation (the amount of liquid water evaporated per unit of time from the area)
MilliMeters per Day
MilliMetres per Day
0.001-fold of the SI unit metre divided by the product of the unit degree Celsius and the SI base unit metre
0001-fold of the SI base unit metre divided by the unit hour
MilliMeter per Hour
MilliMetre per Hour
0.001-fold of the SI base unit metre divided by the SI base unit kelvin
MilliMeter per Kelvin
MilliMetre per Kelvin
0.001-fold of SI base unit metre divided by SI base unit metre
0,001-fold of the SI base unit meter divided by the power of the SI base unit metre with the exponent 2
MilliMeter per Square Meter
MilliMetre per Square Metre
0.001-fold of the SI base unit metre divided by the unit minute
MilliMeter per Minute
MilliMetre per Minute
0.001-fold of the SI base unit metre divided by the SI base unit second
MilliMeter per Second
MilliMetre per Second
0.001-fold of the SI base unit metre divided by the power of the SI base unit second by exponent 2
0.001-fold of the SI base unit metre divided by the unit year
MilliMeter per Year
MilliMetre per Year
0.000001-fold of the power of the SI base unit metre with the exponent 2
Square MilliMeter
Square MilliMetre
0.000001-fold of the power of the SI base unit metre with the exponent 2 divided by the SI base unit second
Square MilliMeter per Second
Square MilliMetre per Second
A metric measure of volume or capacity equal to a cube 1 millimeter on each edge
Cubic MilliMeter
Cubic MilliMetre
Cubic Millimeter Per Gram (mm3/g) is a unit in the category of Specific Volume. It is also known as cubic millimeters per gram, cubic millimetre per gram, cubic millimetres per gram, cubic millimeter/gram, cubic millimetre/gram.
Cubic MilliMeter per Gram
Cubic MilliMetre per Gram
Cubic Millimeter Per Kilogram (mm3/kg) is a unit in the category of Specific Volume. It is also known as cubic millimeters per kilogram, cubic millimetre per kilogram, cubic millimetres per kilogram, cubic millimeter/kilogram, cubic millimetre/kilogram.
Cubic MilliMeter per KiloGram
Cubic MilliMetre per KiloGram
volume ratio consisting of the 0.000000001-fold of the power of the SI base unit metre with the exponent 3 divided by the power of the SI base unit metre with the exponent 3
Cubic MilliMeter per Cubic Meter
Cubic MilliMetre per Cubic Metre
0.001-fold of the power of the SI base unit metre with the exponent 4
Quartic MilliMeter
Quartic MilliMetre
MilliMole
0.001-fold of the SI base unit mol divided by the 0.001-fold of the SI base unit kilogram
MilliMole per Gram
0.001-fold of the SI base unit mol divided by the SI base unit kilogram
MilliMole per KiloGram
The SI derived unit for amount-of-substance concentration is the mmo/L.
MilliMoles per Litre
MilliMoles per Square Metre
MilliMoles per Square Metre Day
Hourly molar flux equivalent to .001 moles per meter squared per hour, typically used to express an areal production (if plane is a surface of the earth or ocean).
MilliMole per Square Metre per Hour
MilliMoles per Square Metre Second
MilliMoles per Cubic Metre
MilliMoles per Cubic Metre Day
MilliMoles per Mole
unit of pressure - 1 mmH2O is the static pressure exerted by a water column with a height of 1 mm
Conventional MilliMeter of Water
Conventional MilliMetre of Water
The millimeter of mercury is defined as the pressure exerted at the base of a column of fluid exactly 1 mm high, when the density of the fluid is exactly $13.5951 g/cm^{3}$, at a place where the acceleration of gravity is exactly $9.80665 m/s^{2}$.
MilliMeter of Mercury
MilliMetre of Mercury
Millimeters of Mercury inclusive of atmospheric pressure
MilliMeter of Mercury - Absolute
MilliMetre of Mercury - Absolute
0.001-fold of the SI derived unit newton
MilliNewton
0.001-fold of the product of the SI derived unit newton and the SI base unit metre
MilliNewton Meter
MilliNewton Metre
0.001-fold of the SI derived unit newton divided by the SI base unit metre to the power two
0.001-fold of the SI derived unit newton divided by the SI base unit metre
MilliNewton per Meter
MilliNewton per Metre
MilliOhm
0.001-fold of the product of the SI derived unit ohm and the SI base unit metre
0.001-fold of the SI derived unit ohm per metrical non SI unit bar
0.001-fold of the SI derived unit ohm per SI base unit kelvin
0.001-fold of the SI derived unit ohm divided by the SI base unit metre
0.001-fold of the unit Osmol divided by the SI base unit kilogram
0.001-fold of the SI derived unit pascal
MilliPascal
0.001-fold of the SI derived unit pascal divided by the SI base unit metre
0.001-fold of the product of the SI derived unit pascal and the SI base unit second
MilliPascal Second
0.001-fold of the product of the SI derived unit pascal and the SI base unit second divided by the unit of the pressure bar
MilliPascal Second per Bar
product of the 0.001-fold of the SI derived unit pascal and the SI base unit second divided by the SI base unit Kelvin
MilliRoentgen
MilliRadian
MilliRad
One thousandth part of an absorbed ionizing radiation dose equal to 100 ergs per gram of irradiated material received per hour.
MilliRads per Hour
The roentgen equivalent man (or rem) is a CGS unit of equivalent dose, effective dose, and committed dose, which are measures of the health effect of low levels of ionizing radiation on the human body.
MilliRoentgen Equivalent Man
0.001-fold of the SI derived unit siemens
MilliSiemens
0.001-fold of the SI derived unit Siemens divided by the 0.01-fold of the SI base unit metre
MilliSiemens per CentiMeter
MilliSiemens per CentiMetre
MilliSiemens per Metre
"Millisecond" is an Imperial unit for 'Time' expressed as $ms$.
MilliSecond
0.001-fold of the SI derived unit sievert
MilliSievert
0.001-fold of the SI derived unit sievert divided by the unit hour
0.001-fold of the SI derived unit sievert divided by the unit minute
0.001-fold of the SI derived unit sievert devided by the SI base unit second
MilliTesla
"MilliTorr" is a unit for 'Force Per Area' expressed as $utorr$.
MilliTorr
MilliVolt
0.001-fold of the product of the SI base unit volt with the SI base unit ampere
product of the 0.001-fold of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
0.001-fold of the unit volt ampere reactive divided by the SI base unit kelvin
MilliVolt per Meter
MilliVolt per Metre
0.001-fold of the SI derived unit volt divided by the unit minute
MilliVolt per Minute
0.001-fold of the SI derived unit volt per SI derived unit volt
MilliW
MilliWatts per Square CentiMetre MicroMetre Steradian
0.001-fold of the SI derived unit weber divided by the power of the SI base unit metre with the exponent 2
MilliWatt per Square Meter
MilliWatt per Square Metre
MilliWatts per Square Metre NanoMetre
MilliWatts per Square Metre NanoMetre Steradian
SI derived unit milliwatt divided by the SI derived unit milligram
MilliWatt per MilliGram
MilliWeber
The "Newton" is the SI unit of force. A force of one newton will accelerate a mass of one kilogram at the rate of one meter per second per second. The newton is named for Isaac Newton (1642-1727), the British mathematician, physicist, and natural philosopher. He was the first person to understand clearly the relationship between force (F), mass (m), and acceleration (a) expressed by the formula $F = m \cdot a$.
Newton
Newtonium
Niuton
Νιούτον
Ньютон
Нютон
ניוטון
نيوتن
نیوتن
न्यूटन
ニュートン
牛顿
product of the SI derived unit newton and the 0.01-fold of the SI base unit metre
Newton CentiMeter
Newton CentiMetre
"Torque" is the tendency of a force to cause a rotation, is the product of the force and the distance from the center of rotation to the point where the force is applied. Torque has the same units as work or energy, but it is a different physical concept. To stress the difference, scientists measure torque in newton meters rather than in joules, the SI unit of work. One newton meter is approximately 0.737562 pound foot.
Newton Meter
Newton Metr
Newton Metre
Newton Metro
Newton per Metro
Newton-metro
Newton-metru
Newton-mètre
Newtonmeter
Niutonometr; Dżul Na Radian
Νιούτον Επί Μέτρο; Νιουτόμετρο
Ньютон-метр
Нютон-метър
نيوتن متر
न्यूटन मीटर
ニュートンメートル
牛米
product of the SI derived unit newton and the SI base unit metre divided by the SI base unit ampere
Newton Meter per Ampere
Newton Metre per Ampere
product of the SI derived unit newton and the SI base unit metre divided by the unit minute [unit of angle]
product of the SI derived unit newton and the SI base unit metre divided by the unit degree
Newton Metre per Degree Metre
product of the derived SI unit newton and the SI base unit metre divided by the SI base unit kilogram
Newton Meter per KiloGram
Newton Metre per KiloGram
This is the SI unit for the rolling resistance, which is equivalent to drag force in newton
Newton Meter per Meter
Newton Metre per Metre
Newtonmeter Pro Meter
Newton Meter per Meter Radian
Newton Metre per Metre Radian
product of the SI derived unit newton and the SI base unit metre divided by the power of the SI base unit metre with the exponent 2
Newton Meter per Square Meter
Newton Metre per Square Metre
Newton Meter per Radian is the SI unit for Torsion Constant
Newton Meter per Radian
Newton Metre per Radian
Newtonmeter Pro Radian
product of the SI derived unit newton and the SI base unit metre divided by the square root out of the SI derived unit watt
Newton Metre Watt to the Power Minus 0.5
The SI derived unit of angular momentum.
Newton Meter Saat
Newton Meter Second
Newton Metr Sekunda
Newton Metre Saniye
Newton Metre Second
Newton Metro Secondo
Newton Metro Segundo
Newton-metro-segundo
Newton-metru-secundă
Newton-mètre-seconde
Newtonmetersekunde
Niutonometrosekunda
Ньютон-метр-секунда
نيوتن متر ثانية
نیوتون ثانیه
न्यूटन मीटर सैकण्ड
ニュートンメートル秒
牛秒
Newton Meter Seconds per Meter
Newton Metre Seconds per Metre
Newtonmetersekunden Pro Meter
Newton metre seconds measured per radian
Newton Meter Seconds per Radian
Newton Metre Seconds per Radian
Newtonmetersekunden Pro Radian
Newton Square Meter
Newton Square Metre
product of the SI derived unit newton and the power of SI base unit metre with exponent 2 divided by the SI base unit ampere
Newton Meter Squared per Ampere
Newton Metre Squared per Ampere
unit of gravitational constant as product of the derived SI unit newton, the power of the SI base unit metre with the exponent 2 divided by the power of the SI base unit kilogram with the exponent 2
Newton Square Meter per Square KiloGram
Newton Square Metre per Square KiloGram
SI derived unit newton divided by the SI base unit ampere
Newton per Ampere
Newton Per Coulomb ( N/C) is a unit in the category of Electric field strength. It is also known as newtons/coulomb. Newton Per Coulomb ( N/C) has a dimension of MLT-3I-1 where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. It essentially the same as the corresponding standard SI unit V/m.
Newton per Coulomb
SI derived unit newton divided by the 0.01-fold of the SI base unit metre
Newton per CentiMeter
Newton per CentiMetre
derived SI unit newton divided by the 0.0001-fold of the power of the SI base unit metre by exponent 2
Newton per Square CentiMeter
Newton per Square CentiMetre
Gravitational field strength at a point is the gravitational force per unit mass at that point. It is a vector and its S.I. unit is N kg-1.
Newton per KiloGram
Newton Per Meter (N/m) is a unit in the category of Surface tension. It is also known as newtons per meter, newton per metre, newtons per metre, newton/meter, newton/metre. This unit is commonly used in the SI unit system. Newton Per Meter (N/m) has a dimension of MT-2 where $M$ is mass, and $T$ is time. This unit is the standard SI unit in this category.
Newton Al Metro
Newton Bölü Metre
Newton Je Meter
Newton Na Meter
Newton Par Mètre
Newton Pe Metru
Newton Por Metro
Newton per Meter
Newton per Metre
Newtonů Na Metr
Niuton Na Metr
Ньютон На Метр
نیوتن بر متر
प्रति मीटर न्यूटन
ニュートン毎メートル
牛顿每米
Newtons per Square Meter
Newtons per Square Metre
Newtons per Cubic Metre
SI derived unit newton divided by the 0.001-fold of the SI base unit metre
Newton per MilliMeter
Newton per MilliMetre
SI derived unit newton divided by the 0.000001-fold of the power of the SI base unit metre with the exponent 2
Newton per Square MilliMeter
Newton per Square MilliMetre
A one-newton force applied for one angle/torsional torque
Newton Pro Radian
Newton per Radian
product of the SI derived unit newton and the SI base unit second
Newton Saat
Newton Saniye
Newton Second
Newton Segundo
Newton Sekunda
Newton per Secondo
Newton-seconde
Newton-secundă
Newton-segundo
Newtonsekunde
Niutonosekunda
Ньютон-секунда
نيوتن ثانية
न्यूटन सैकण्ड
ニュートン秒
Newton Second per Meter
Newton Second per Metre
Newtonsekunden Pro Meter
unit of the dynamic viscosity as a product of unit of the pressure (newton by square metre) multiplied with the SI base unit second
The SI unit of specific acoustic impedance. When sound waves pass through any physical substance the pressure of the waves causes the particles of the substance to move. The sound specific impedance is the ratio between the sound pressure and the particle velocity it produces. The specific impedance is $1 N \cdot s \cdot m^{-3}$ if unit pressure produces unit velocity.
Newton Second per Cubic Meter
Newton Second per Cubic Metre
Newton Seconds per Radian
Newtonsekunden Pro Radian
A nat is a logarithmic unit of information or entropy, based on natural logarithms and powers of e, rather than the powers of 2 and base 2 logarithms which define the bit. The nat is the natural unit for information entropy. Physical systems of natural units which normalize Boltzmann's constant to 1 are effectively measuring thermodynamic entropy in nats.
Nat
"Nat per Second" is information rate in natural units.
Nat per Second
The neper is a logarithmic unit for ratios of measurements of physical field and power quantities, such as gain and loss of electronic signals. It has the unit symbol Np. The unit's name is derived from the name of John Napier, the inventor of logarithms. As is the case for the decibel and bel, the neper is not a unit in the International System of Units (SI), but it is accepted for use alongside the SI. Like the decibel, the neper is a unit in a logarithmic scale. While the bel uses the decadic (base-10) logarithm to compute ratios, the neper uses the natural logarithm, based on Euler's number
Neper
unit neper divided by the SI base unit second
Net tonnage is used in the United States to determine eligibility for registering boats with the federal government. It is a nonlinear unit derived from the total volume of a ship's cargo space as well as some dimensionless factors. Net tonnage is not a measure of the weight of the ship or its cargo, and should not be confused with terms such as deadweight tonnage or displacement. Net tonnage is also used to determine the amount of money that can be charged to a ship for using a port's facilities.
Net Tonnage
"Nephelometry Turbidity Unit" is a C.G.S System unit for 'Turbidity' expressed as $NTU$.
Nephelometry Turbidity Unit
"Number" is a unit for 'Dimensionless' expressed as (\#$.
Number
Number per Square CentiMetre Thousand Years
Number per Gram
Count of an entity or phenomenon's occurrence in 10,000 times the SI unit area (square metre).
Number per Hectare
number divided by the unit hectare and by the unit year
Number per Hectare Year
Number per Hour
Count of an entity or phenomenon occurrence in one 10th of the SI unit of mass (kilogram).
Number per 100 Grams
Count of an entity or phenomenon's occurrence divided by SI base unit kilogram
Number per KiloGram
Number per Square KiloMetre
Number per Litre
Number per Metre
Number per Square Metre
Number per Square Metre Day
Number per Cubic Metre
Number per Minute
Number per MicroLitre
Count of an entity or phenomenon occurrence in one millionth of the SI unit of mass (kilogram).
Number per MilliGram
Count of an entity or phenomenon occurrence in one thousandth of the SI unit of volume (litre).
Number per MilliLiter
Number per MilliLitre
Number per Cubic MilliMeter
Number per NanoLiter
Number per NanoLitre
Number per PicoLiter
Counts per Second
"Number per Year" is a unit for 'Frequency' expressed as $\#/yr$.
Number per Year
NanoAmpere
0.000000001-fold of the SI base unit ampere divided by the SI base unit kelvin
NanoBecquerel
NanoBecquerels per Litre
NanoCoulomb
A common metric unit of electric capacitance equal to $10^{-9} farad$. This unit was previously called the $millimicrofarad$.
NanoFarad
0.000000001-fold of the SI derived unit farad divided by the SI base unit metre
NanoFarad per Meter
NanoFarad per Metre
10**-9 grams or one 10**-12 of the SI standard unit of mass (kilogram).
NanoGram
0,000,000,000,001-fold of the SI base unit kilogram divided by the 0.0001-fold of the power of the SI base unit metre and exponent 2
NanoGram per Square CentiMeter
NanoGram per Square CentiMetre
A rate of change of 1e-12 of the SI unit of mass over 0.00001 of the SI unit of area in a period of one day.
NanoGram per Square CentiMeter Day
NanoGram per Square CentiMetre Day
NanoGram per Day
A derived unit for amount-of-substance concentration measured in ng/dL.
NanoGram per DeciLitre
mass ratio consisting of the 0.000000000001-fold of the SI base unit kilogram divided by the SI base unit kilogram
NanoGram per KiloGram
NanoGram per Liter
NanoGram per Litre
NanoGram per Square Metre Pascal Second
"0.000000000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3"
0.000000000001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
"Derived from GM-PER-M3 which exists in QUDT"
NanoGram per Cubic Meter
NanoGram per Cubic Metre
NanoGram per MicroLitre
mass ratio consisting of the 0.000000000001-fold of the SI base unit kilogram divided by the milligram
NanoGram per MilliGram
One 10**12 part of the SI standard unit of mass of the measurand per millilitre volume of matrix.
NanoGram per MilliLitre
0.000000001-fold of the SI derived unit gray divided by the unit hour
0.000000001-fold of the SI derived unit gray divided by the unit minute
0.000000001-fold of the SI derived unit gray divided by the SI base unit second
0.000000001-fold of the SI derived unit henry
NanoHenry
0.000000001-fold of the SI derived unit henry divided by the SI base unit metre
NanoHenry per Meter
NanoHenry per Metre
0.000000001-fold of the SI derived unit joule divided by the SI base unit second
NanoKatal per Liter
NanoKatal per Litre
NanoLitre
0.000000001-fold of the SI base unit metre
NanoMeter
NanoMetre
NanoMeter per CentiMeter MegaPascal
NanoMeter per CentiMeter Psi
NanoMeter per MilliMeter MegaPascal
A unit of area equal to that of a square, of sides 1nm
Square NanoMeter
Square NanoMetre
NanoMole
NanoMoles per Cubic CentiMetre Hour
Nanomole Per Gram (\(nanomol/g\)) is a unit of Molality
0.000000001-fold of the SI base unit mol divided by the 0.001-fold of the SI base unit kilogram
NanoMoles per Gram
10^-9 SI unit of the quantity of matter per SI unit of mass per unit of time expressed in hour (3,600 seconds).
NanoMoles per Gram per Hour
NanoMoles per Gram Second
NanoMoles per KiloGram
A scaled unit of amount-of-substance concentration.
NanoMoles per Litre
NanoMoles per Litre Day
NanoMoles per Litre Hour
NanoMoles per Square Metre Day
Molar flux equivalent to 1e-9 moles per meter squared per sec.
NanoMole per Square Metre per Second
NanoMoles per MicroGram Hour
NanoMoles per MicroMole
NanoMoles per MicroMole Day
0.000000001-fold of the SI derived unit newton divided by the SI base unit metre to the power two
0.000000001-fold of the SI derived unit ohm
0.000000001-fold of the product of the SI derived unit ohm and the SI base unit metre
NanoSiemens
0.000000001-fold of the SI derived unit Siemens by the 0.01 fol of the SI base unit metre
NanoSiemens per CentiMeter
NanoSiemens per CentiMetre
0.000000001-fold of the SI derived unit Siemens divided by the SI base unit metre
NanoSiemens per Meter
NanoSiemens per Metre
A nanosecond is a SI unit of time equal to one billionth of a second (10-9 or 1/1,000,000,000 s). One nanosecond is to one second as one second is to 31.69 years. The word nanosecond is formed by the prefix nano and the unit second.
NanoSecond
0.000000001-fold of the SI derived unit sievert divided by the unit hour
0.000000001-fold of the SI derived unit sievert divided by the unit minute
0.000000001-fold of the SI derived unit sievert devided by the SI base unit second
0.000000001-fold of the SI derived unit tesla
NanoTesla
0.000000001-fold of the SI derived unit volt
0.000000001-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000001-fold of the unit volt ampere reactive
0.000000001-fold of the SI derived unit watt
NanoWatt
0.000000001-fold of the SI derived unit watt divided by the SI base unit metre to the power two
An octave is a doubling or halving of a frequency. One oct is the logarithmic frequency interval between $f1$ and $f2$ when $f2/f1 = 2$.
Oct
synonym for byte: 1 octet = 8 bit = 1 byte
unit octet divided by the SI base unit second
Oersted (abbreviated as Oe) is the unit of magnetizing field (also known as H-field, magnetic field strength or intensity) in the CGS system of units.
Oersted
"Oersted Centimeter" is a C.G.S System unit for 'Magnetomotive Force' expressed as $Oe-cm$.
Oersted CentiMeter
Oersted CentiMetre
The $\textit{ohm}$ is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm. It is defined as: $$\Omega \equiv\ \frac{\text{V}}{\text{A}}\ \equiv\ \frac{\text{volt}}{\text{amp}}\ \equiv\ \frac{\text{W}}{\text {A}^{2}}\ \equiv\ \frac{\text{watt}}{\text{amp}^{2}}\ \equiv\ \frac{\text{H}}{\text {s}}\ \equiv\ \frac{\text{henry}}{\text{second}}$$
Ohm
Ohmio
Ohmium
אוהם
أوم
اهم
ओह्म
オーム
欧姆
product of the SI derived unit ohm and the 0.01-fold of the SI base unit metre
Ohm CentiMeter
Ohm CentiMetre
product of the SI derived unit ohm and the 1,000-fold of the SI base unit metre
Ohm Meter
Ohm Metr
Ohm Metre
Ohm per Metro
Ohm-metro
Ohm-metru
Ohm-mètre
Ohmio Metro
Ohmmeter
Ом-метр
أوم متر
اهم متر
ओह्म मीटर
オームメートル
欧姆米
Ohm Square Meter per Meter
Ohm Square Metre per Metre
SI derived unit ohm per metrical non SI unit bar
SI derived unit ohm per SI base unit kelvin
SI derived unit ohm divided by the 1,000-fold of the SI base unit metre
SI derived unit ohm divided by the SI base unit metre
unit ohm divided by the unit mile according to the Anglo-American system of units
$\textit{abohm}$ is the basic unit of electrical resistance in the emu-cgs system of units. One abohm is equal to $10^{-9} ohms$ in the SI system of units; one abohm is a nano ohm.
Abohm
"StatOHM" is the unit of resistance, reactance, and impedance in the electrostatic C.G.S system of units, equal to the resistance between two points of a conductor when a constant potential difference of 1 statvolt between these points produces a current of 1 statampere; it is equal to approximately $8.9876 \times 10^{11} ohms$. The statohm is an extremely large unit of resistance. In fact, an object with a resistance of 1 stat W would make an excellent insulator or dielectric . In practical applications, the ohm, the kilohm (k W ) and the megohm (M W or M) are most often used to quantify resistance.
Statohm
"Okta" is the unit of measurement to describe the amount of cloud cover. Okta is reported in eighths of the celestial dome covered by all clouds visible. The codes represent: 0: 0/8, the complete absence of cloud; 1: 1/8 or less, but not zero; 2: 2/8; 3: 3/8; 4: 4/8, half of the sky is covered; 5: 5/8; 6: 6/8; 7: 7/8 or more, but not 8/8; 8: 8/8, sky is completely covered; 9: Sky obscured by fog and/or other meteorological phenomena; /: Cloud cover is indiscernible for reasons other than fog or other meteorological phenomena, or observation is not made.
Okta
value of the quotient from two physical units of the same kind as a numerator and denominator whereas the units are shortened mutually
One osmole is the amount of osmotically active material that when dissolved in 22.4L of solvent at 0 degrees celsius exerts an osmotic pressure of 1 atmosphere.
An ounce of mass is 1/16th of a pound of mass, based on the international standard definition of the pound as exactly 0.45359237 kg.
Ounce Mass
unit of the unbalance as a product of avoirdupois ounce according to the avoirdupois system of units and foot according to the Anglo-American and Imperial system of units
Ounce (avoirdupois) Foot
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and unit of time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Ounce Square Foot per Cubic Inch Pound-force Second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time hour
Ounce Hour per Power of Inch with the Exponent 6
unit of the unbalance as a product of avoirdupois ounce according to the avoirdupois system of units and inch according to the Anglo-American and Imperial system of units
Ounce (avoirdupois) Inch
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Ounce Square Inch per Cubic Inch Pound-force Second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per unit for time minute
Ounce Minute per Power of Inch with the Exponent 6
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the unit for time day
Ounce (avoirdupois) per Day
"Ounce per Square Foot" is an Imperial unit for 'Mass Per Area' expressed as $oz/ft^{2}$.
Imperial Mass Ounce per Square Foot
"Ounce per Gallon" is an Imperial unit for 'Density' expressed as $oz/gal$.
Imperial Mass Ounce per Gallon
unit of the density according to the Imperial system of units
Ounce (avoirdupois) per Gallon (UK)
Ounce (avoirdupois) per Gallon (US)
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the unit for time hour
Ounce (avoirdupois) per Hour
unit of the surface specific mass (avoirdupois ounce according to the avoirdupois system of units according to the surface square inch according to the Anglo-American and Imperial system of units)
"Ounce per Cubic Inch" is an Imperial unit for 'Density' expressed as $oz/in^{3}$.
Imperial Mass Ounce per Cubic Inch
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the unit for time minute
Ounce (avoirdupois) per Minute
traditional unit of the mass avoirdupois ounce according to the avoirdupois system of units divided by the SI base unit second
Ounce (avoirdupois) per Second
"Ounce per Square Yard" is an Imperial unit for 'Mass Per Area' expressed as $oz/yd^{2}$.
Imperial Mass Ounce per Square Yard
unit ounce according to the avoirdupois system of units divided by the power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3
Ounce (avoirdupois) per Cubic Yard
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and unit gallon (UK) according to the Imperial system of units per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit gallon (US) according to the Anglo-American system of units per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
quotient of unit of the mass according to the avoirdupois system of units per power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and power of unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 per SI base unit second
Ounce Second per Power of Inch with the Exponent 6
"Ounce Force" is an Imperial unit for 'Force' expressed as $ozf$.
Imperial Ounce Force
"Ounce Force Inch" is an Imperial unit for 'Torque' expressed as $ozf-in$.
Imperial Ounce Force Inch
unit of specific weight according to the Anglo-American system of units
An obsolete unit of mass; the Troy Ounce is 1/12th of a Troy Pound. Based on the international definition of a Troy Pound as 5760 grains, the Troy Ounce is exactly 480 grains, or 0.0311034768 kg.
Ounce Troy
$\textit{Imperial Ounce}$ is an Imperial unit for 'Liquid Volume' expressed as $oz$.
Fluid Ounce (UK)
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the unit for time day
Ounce (uk Fluid) per Day
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the unit for time hour
Ounce (uk Fluid) per Hour
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the unit for time minute
Ounce (uk Fluid) per Minute
unit of the volume fluid ounce (UK) for fluids according to the Imperial system of units divided by the SI base unit second
Ounce (uk Fluid) per Second
"US Liquid Ounce" is a unit for 'Liquid Volume' expressed as $oz$.
Us Liquid Ounce
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by unit for time day
Ounce (us Fluid) per Day
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by the unit for time hour
Ounce (us Fluid) per Hour
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by the unit for time minute
Ounce (us Fluid) per Minute
unit of the volume fluid ounce (US) for fluids according to the Anglo-American system of units divided by the SI base unit second
Ounce (us Fluid) per Second
Pascal
Pascalium
Paskal
Πασκάλ
Паскал
Паскаль
פסקל
باسكال
پاسگال
पास्कल
パスカル
帕斯卡
product out of the SI derived unit pascal and the unit litre divided by the SI base unit second
Pascal Liter per Second
Pascal Litre per Second
Pascal Metres
Pascal Metres per Second
Pascal Metres per Square Second
A metric unit for stress intensity factor and fracture toughness.
Pascal Square Root Meter
Pascal Square Root Metre
unit of the burst index as derived unit for pressure pascal related to the substance, represented as a quotient from the SI base unit kilogram divided by the power of the SI base unit metre by exponent 2
product out of the SI derived unit pascal and the power of the SI base unit metre with the exponent 3 divided by the SI base unit second
Pascal Cubic Meter per Second
Pascal Cubic Metre per Second
SI derived unit pascal divided by the unit bar
Pascal per Bar
A rate of change of pressure measured as the number of Pascals in a period of one hour.
Pascal per Hour
Pascal per Kelvin
SI derived unit pascal divided by the SI base unit metre
Pascal per Meter
Pascal per Metre
A rate of change of pressure measured as the number of Pascals in a period of one minute.
Pascal per Minute
A rate of change of pressure measured as the number of Pascals in a period of one second.
Pascal per Second
The SI unit of dynamic viscosity, equal to 10 poises or 1000 centipoises.
Pascal Saat
Pascal Saniye
Pascal Second
Pascal Segundo
Pascal Sekunda
Pascal per Secondo
Pascal-seconde
Pascal-secundă
Pascal-segundo
Pascalsekunde
Paskalosekunda
Паскаль-секунда
باسكال ثانية
पास्कल सैकण्ड
パスカル秒
帕斯卡秒
product out of the SI derived unit pascal and the SI base unit second divided by the unit bar
Pascal Second per Bar
product out of the SI derived unit pascal and the SI base unit second divided by the SI base unit kelvin
product of the SI derived unit pascal and the SI base unit second divided by the unit litre
Pascal Second Per Meter ($Pa-s/m$) is a unit in the category of Specific acoustic impedance. It is also known as pascal-second/meter. Pascal Second Per Meter has a dimension of $ML^2T^{-1}$ where $M$ is mass, $L$ is length, and $T$ is time. It essentially the same as the corresponding standard SI unit $kg/m2\cdot s$.
Pascal Second per Meter
Pascal Second per Metre
$\textit{Pascal Second Per Cubic Meter}$ ($Pa-s/m^3$) is a unit in the category of Acoustic impedance. It is also known as $\textit{pascal-second/cubic meter}$. It has a dimension of $ML^{-4}T^{-1}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
Pascal Saat per Meter Kubik
Pascal Saniye Bölü Metre Küp
Pascal Second per Cubic Meter
Pascal Second per Cubic Metre
Pascal Segundo Por Metro Cúbico
Pascal Sekunda Na Metr Krychlový
Pascal per Secondo Al Metro Cubo
Pascal-seconde Par Mètre Cube
Pascal-secundă Pe Metru Cub
Pascal-segundo Por Metro Cúbico
Pascalsekunde Je Kubikmeter
Paskalosekunda Na Metr Sześcienny
Паскаль-секунда На Кубический Метр
باسكال ثانية لكل متر مكعب
نیوتون ثانیه بر متر مکعب
पास्कल सैकण्ड प्रति घन मीटर
パスカル秒毎立方メートル
Square Pascal per Square Second
Square Pascal Second ($Pa^2\cdot s$) is a unit in the category of sound exposure.
Square Pascal Second
The parsec (parallax of one arcsecond; symbol: pc) is a unit of length, equal to just under 31 trillion ($31 \times 10^{12}$) kilometres (about 19 trillion miles), 206265 AU, or about 3.26 light-years. The parsec measurement unit is used in astronomy. It is defined as the length of the adjacent side of an imaginary right triangle in space. The two dimensions that specify this triangle are the parallax angle (defined as 1 arcsecond) and the opposite side (defined as 1 astronomical unit (AU), the distance from the Earth to the Sun). Given these two measurements, along with the rules of trigonometry, the length of the adjacent side (the parsec) can be found.
Parsec
A pica is a typographic unit of measure corresponding to 1/72 of its respective foot, and therefore to 1/6 of an inch. The pica contains 12 point units of measure. Notably, Adobe PostScript promoted the pica unit of measure that is the standard in contemporary printing, as in home computers and printers. Usually, pica measurements are represented with an upper-case 'P' with an upper-right-to-lower-left virgule (slash) starting in the upper right portion of the 'P' and ending at the lower left of the upright portion of the 'P'; essentially drawing a virgule (/) through a 'P'. Note that these definitions are different from a typewriter's pica setting, which denotes a type size of ten characters per horizontal inch.
Pica
The poundal is a unit of force that is part of the foot-pound-second system of units, in Imperial units introduced in 1877, and is from the specialized subsystem of English absolute (a coherent system). The poundal is defined as the force necessary to accelerate 1 pound-mass to 1 foot per second per second. $1 pdl = 0.138254954376 N$ exactly.
Poundal
product from the non SI-conform unit of the force poundal and the unit foot according to the Anglo-American and Imperial system of units
product of the non SI-conform unit of the force poundal and the unit inch according to the Anglo-American and Imperial system of units
A $\textit{Poundal Per Square Foot}$, ($pdl/ft^2$), is a unit in the category of Pressure. It is also known as poundals per square foot, poundal/square foot. This unit is commonly used in the UK, US unit systems. A $\textit{Poundal Per Square Foot}$ has a dimension of $ML^{-1}T^{-2}$, where $M$ is mass, $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $\textit{Pa}$ by multiplying its value by a factor of 1.488163944.
Poundal per Square Foot
non SI-conform unit of the surface tension according to the Imperial unit system as quotient poundal by inch
non SI-conform unit of the pressure according to the Imperial system of units (poundal by square inch)
non SI-conforming unit of dynamic viscosity according to the Imperial system of units as product unit of the pressure (poundal by square inch) multiplied by the SI base unit second
non SI-conforming unit of mass which comes from the Anglo-American Troy or Apothecaries' Weight System of units according to NIST of 1 pwt = 1.555174 10^3 kg
Pennyweight
Reciprocal Angstrom
reciprocal of the metrical unit with the name bar
Reciprocal Bar
reciprocal of the 0.01-fold of the SI base unit metre
Reciprocal CentiMeter
Reciprocal CentiMetre
reciprocal of the 0.000001-fold of the power of the SI base unit metre with the exponent 3
Reciprocal Cubic CentiMeter
Reciprocal Cubic CentiMetre
Reciprocal Day
Unit for expressing the change of some quantity relative to a unit change in temperature.
Reciprocal Degree Celsius
reciprocal of the traditional unit degree Fahrenheit
complement of the unit for atomic energy electronvolt related to the power of the SI base unit metre by exponent 3
Reciprocal Electron Volt per Cubic Metre
Per Square Electron Volt is a denominator unit with dimensions $/eV^2$.
Reciprocal Square Electron Volt
reciprocal value of the power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3
Reciprocal Cubic Foot
reciprocal of the 0.001-fold of the SI base unit kilogram
Reciprocal Gram
Per Square Giga Electron Volt Unit is a denominator unit with dimensions $/GeV^2$.
Reciprocal Square Giga Electron Volt Unit
Reciprocal Henry
A reciprocal unit of time for $\textit{reciprocal hour}$ or "inverse hour".
Reciprocal Hour
complement of the unit inch according to the Anglo-American and Imperial system of units
complement of the power of the unit inch according to the Anglo-American and Imperial system of units by exponent 2
reciprocal value of the power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3
Reciprocal Cubic Inch
unit of the density of states as a reciprocal of the derived unit joule related to the power of the SI base unit metre by exponent 3
Reciprocal Joule Cubic Meter
Reciprocal Joule Cubic Metre
Per Square Joule is a denominator unit with dimensions $/eV^2$.
Reciprocal Square Joule
Per Kelvin Unit is a denominator unit with dimensions $/k$.
Reciprocal Kelvin
product of SI base units kilogram to the power of minus one and second to the power of minus one given as dimensional product dim Q = L**$a} M**$b} T**$g} I**$d} $TH**$e} N**$z} J**$i}
Per Square Kilogram is a denominator unit with dimensions $/kg^2$.
Reciprocal Square KiloGram
Per Kilometer Unit is a denominator unit with dimensions $/km$.
Reciprocal KiloMeter
Reciprocal KiloMetre
reciprocal of the 1,000-fold of the product of the SI derived unit volt and the SI base unit ampere and the unit hour
Reciprocal KiloVolt Ampere Hour
reciprocal of the 1,000-fold of the product of the SI derived unit volt ampere and the unit hour
Reciprocal Liter
Reciprocal Litre
reciprocal of the unit pound (avoirdupois)
Per Meter Unit is a denominator unit with dimensions $/m$.
Reciprocal Meter
Reciprocal Metre
Per Meter Kelvin Unit is a denominator unit with dimensions $/m.k$.
Reciprocal Meter Kelvin
Reciprocal Metre Kelvin
Reciprocal Metre per NanoMetre
Reciprocal Metre NanoMetre Steradian
Reciprocal Metre per Second
Reciprocal Metre per Steradian
"Per Square Meter" is a denominator unit with dimensions $/m^2$.
Reciprocal Square Meter
Reciprocal Square Metre
Reciprocal Square Meter Second
Reciprocal Square Metre Second
Reciprocal square metre per second
"Per Cubic Meter" is a denominator unit with dimensions $/m^3$.
Reciprocal Cubic Meter
Reciprocal Cubic Metre
unit of the slowing-down density as reciprocal of the power of the SI base unit metre with exponent 3 divided by the SI base unit second
Reciprocal Cubic Meter Second
Reciprocal Cubic Metre Second
Reciprocal cubic metre per second
thousandth divided by the composed unit for pressure (pound-force per square inch)
Reciprocal Mille Psi
A reciprocal unit of time for $\textit{reciprocal minute}$ or $\textit{inverse minute}$.
Reciprocal Minute
Reciprocal Month
The $\textit{Per Mole Unit}$ is a denominator unit with dimensions $mol^{-1}$ .
Reciprocal Mole
0.000001-fold of reciprocal of the SI base unit kelvin
Reciprocal MegaKelvin Or MegaKelvin to the Power Minus One
reciprocal of the 1,000,000-fold of the derived unit pascal
Per Micrometer Unit is a denominator unit with dimensions $/microm$.
Reciprocal MicroMeter
Reciprocal MicroMetre
Units used to describe the sensitivity of detection of a spectrophotometer.
Reciprocal MicroMole per Litre
reciprocal of the 0.000001-fold of the SI base unit kilogram
Reciprocal MilliLiter
Reciprocal MilliLitre
Per Millimeter Unit is a denominator unit with dimensions $/mm$.
Reciprocal MilliMeter
Reciprocal MilliMetre
reciprocal value of the 0.000000001-fold of the power of the SI base unit metre with the exponent 3
Reciprocal Cubic MilliMeter
Reciprocal Cubic MilliMetre
Reciprocal MilliSecond
Per Nanometer Unit is a denominator unit with dimensions $/nm$.
Reciprocal NanoMeter
Reciprocal NanoMetre
reciprocal of the unit ounce (avoirdupois)
reciprocal of the SI derived unit pascal
Reciprocal Pascal
Reciprocal Pascal per Second
reciprocal value of the composed unit for pressure (pound-force per square inch)
Reciprocal Psi
Per Picoometer Unit is a denominator unit with dimensions $/pm$.
Reciprocal PicoMeter
Reciprocal PicoMetre
In physics, the Planck mass, denoted by $m_P$, is the unit of mass in the system of natural units known as Planck units. It is defined so that $\approx 1.2209 \times 10 GeV/c_0 = 2.17651(13) \times 10 kg$, (or $21.7651 \mu g$), where $c_0$ is the speed of light in a vacuum, $G$ is the gravitational constant, and $\hbar$ is the reduced Planck constant. Particle physicists and cosmologists often use the reduced Planck mass, which is $\approx 4.341 \times 10 kg = 2.435 \times 10 GeV/c$. The added factor of $1/{\sqrt{8\pi}}$ simplifies a number of equations in general relativity. Quantum effects are typified by the magnitude of Planck's constant.
$m_P = \sqrt{\frac{ \hbar c^3}{G}} \approx 1.2209 \times 10^{19} GeV/c^2 = 2.17651(13) \times 10^{-8}$, where $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant, and $G$ is the gravitational constant. The two digits enclosed by parentheses are the estimated standard error associated with the reported numerical value.
Inverse Square Planck Mass
A reciprical unit of time for $\textit{reciprocal second}$ or $\textit{inverse second}$. The $\textit{Per Second}$ is a unit of rate.
Reciprocal Second
$\textit{Per Second Square Meter}$ is a measure of flux with dimensions $/sec-m^2$.
Reciprocal Second Square Meter
Reciprocal Second Square Metre
Per Second Square Meter Steradian is a denominator unit with dimensions $/sec-m^2-sr$.
It is not clear this unit is ever used. [Editor]
Reciprocal Second Square Meter Steradian
Reciprocal Second Square Metre Steradian
reciprocal of the SI base unit second divided by the power of the SI base unit metre with the exponent 3
Per Second Steradian Unit is a denominator unit with dimensions $/sec-sr$.
Reciprocal Second Steradian
reciprocal of the SI base unit second divided by the product of the SI derived unit steradian and the power of the SI base unit metre and te exponent 2
Reciprocal Second per Steradian Square Metre
Reciprocal Square Second
Reciprocal Steradian
A $\textit{Per Tesla Meter Unit}$ is a denominator unit with dimensions $/m .\cdot T$.
Reciprocal Tesla Meter
Reciprocal Tesla Metre
Per Tesla Second Unit is a denominator unit with dimensions $/s . T$.
Reciprocal Tesla Second Unit
reciprocal of the 2,000-fold of the SI base unit pound
reciprocal of the 1,000-fold of the SI base unit kilogram
reciprocal of the product of the SI derived unit volt, the SI base unit ampere and the SI base unit second
reciprocal of the product of the SI derived unit volt ampere and the SI base unit second
complement of the SI derived unit weber as unit of the Josephson constant, which value is equal to the 384,597,891-fold of the reference value gigahertz divided by volt
Reciprocal Weber
Reciprocal Week
reciprocal value of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3
Reciprocal Cubic Yard
Reciprocal Year
"Percent" is a unit for 'Dimensionless Ratio' expressed as $\%$.
Percent
hundredth relating to the quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units and the product of the units foot and unit for time hour
Percent Foot Hour per Pound (avoirdupois)
hundredth relating to the quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units and the product of the units foot and SI base unit second
Percent Foot Second per Pound (avoirdupois)
hundredth relating to the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second and power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 2
Percent Square Foot per Pound-force Second
hundredth relating to the quotient of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit for time hour
hundredth relating to the quotient of power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time hour
hundredth relating to the quotient of the unit gallon (UK) according to the Imperial system of units and the unit for time hour
hundredth relating to the quotient of the unit gallon (US) according to the Anglo-American system of units and the unit for time hour
hundredth relating to the quotient of power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time hour
hundredth relating to the quotient of the unit litre and the unit for time hour
hundredth relating to the quotient of the power of the SI base unit metre with the exponent 3 and the unit for time hour
hundredth relating to the quotient of power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time hour
hundredth relating to the product of the unit pound-force according to the Anglo-American system of units and quotient of SI base unit second and power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 2
Percent Square Inch per Pound-force Second
hundredth relating to the quotient of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the unit for time minute
hundredth relating to the quotient of power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time minute
hundredth relating to the quotient of the unit gallon (UK) according to the Imperial system of units and the unit for time minute
hundredth relating to the quotient of the unit gallon (US) according to the Anglo-American system of units and the unit for time minute
hundredth relating to the quotient of power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time minute
hundredth relating to the quotient of the unit litre and the unit for time minute
hundredth relating to the quotient of the power of the SI base unit metre with the exponent 3 and the unit for time minute
hundredth relating to the quotient of power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 and the unit for time minute
hundredth relating to the co-efficient 100,000
hundredth relating to the co-efficient 10,000
[CGS] hundredth relating to the 0.01-fold of the unit of the dynamic viscosity poise
Percent per Day
hundredth divided by the unit degree Celsius
hundredth relating to the 10-fold of the SI base unit Kelvin
Percent per Hour
hundredth relating to the co-efficient 100
hundredths relating to the 100-fold of unit bar
hundredth divided by the unit inch according to the Anglo-American and the Imperial system of units
hundredth divided by the SI base unit kelvin
hundredth relating to the co-efficient 1,000
hundredth relating to the SI base unit metre
Percent per Metre
hundredth relating to the 0.001-fold of the SI base unit metre
hundredth relating to the product of the 0.001-fold of the SI derived unit pascal and the SI base unit second
hundredth relating to the product of the SI derived unit pascal and the SI base unit second
[CGS] hundredth relating to the unit of the dynamic viscosity poise
A rate of change in percent over a period of 7 days
Percent per Week
Percent per Year
hundredth relating to the quotient of the 0.000001-fold of the power of the SI base unit metre with the exponent 3 and the SI base unit second
hundredth relating to the quotient of power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and the SI base unit second
hundredth relating to the quotient of the unit gallon (UK) according to the Imperial system of units and the SI base unit second
hundredth relating to the quotient of the unit gallon (US) according to the Anglo-American system of units and the SI base unit second
hundredth relating to the quotient of power of the unit inch according to the Anglo-American and the Imperial system of units with the exponent 3 and the SI base unit second
hundredth relating to the quotient of the unit litre and the SI base unit second
hundredth relating to the quotient of the power of the SI base unit metre with the exponent 3 and the SI base unit second
hundredth relating to the quotient of power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 and the SI base unit second
Percent relative humidity is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature, expressed as a percentage.
Percent Relative Humidity
Relative permeability, denoted by the symbol $\mu _T$, is the ratio of the permeability of a specific medium to the permeability of free space $\mu _0$
Relative Electromagnetic Permeability
In multiphase flow in porous media, the relative permeability of a phase is a dimensionless measure of the effective permeability of that phase. It is the ratio of the effective permeability of that phase to the absolute permeability. It can be viewed as an adaptation of Darcy's law to multiphase flow. For two-phase flow in porous media given steady-state conditions, we can write where is the flux, is the pressure drop, is the viscosity.
Relative Permeability
The $\textit{relative permittivity}$ of a material under given conditions reflects the extent to which it concentrates electrostatic lines of flux. In technical terms, it is the ratio of the amount of electrical energy stored in a material by an applied voltage, relative to that stored in a vacuum. Likewise, it is also the ratio of the capacitance of a capacitor using that material as a dielectric, compared to a similar capacitor that has a vacuum as its dielectric. Relative permittivity is a dimensionless number that is in general complex. The imaginary portion of the permittivity corresponds to a phase shift of the polarization $P$ relative to $E$ and leads to the attenuation of electromagnetic waves passing through the medium. $$\epsilon_r(w) = \frac{\epsilon(w)}{\epsilon_O}$$, where $\epsilon_r(w)$ is the complex frequency-dependent absolute permittivity of the material, and $\epsilon_O$ is the vacuum permittivity.
Relative Permittivity
The rate of water vapor transmission through a specific thickness of a material—i.e., the permeability divided by the thickness.
Metric Perm
traditional unit for the ability of a material to allow the transition of the steam, defined at a temperature of 0 °C as steam transmittance, where the mass of one grain steam penetrates an area of one foot squared at a pressure from one inch mercury per hour
traditional unit for the ability of a material to allow the transition of the steam, defined at a temperature of 23 °C as steam transmittance at which the mass of one grain of steam penetrates an area of one square foot at a pressure of one inch mercury per hour
\frac{grain}{hour \cdot ft^2 \cdot in\,Hg}
U.s. Perm
In chemistry the unit $\textit{pH}$, also referred to as $\textit{acidity}$ or $\textit{basicity}$, is the negative logarithm (base 10) of the concentration of free protons (or hydronium ions). The definition of $pH$ in terms of hydrogen ions in solution is: $$\text{pH}=-\log_{10}(a_{H^+})\equiv-\log_{10}\left(\left[H^+\right]\right)$$ Where $a_{H^+}$ is the equilibrium molar concentration of $H^+$ in the solution, the activity of the hydrogen ion in the solution. $$$$ This definition is appropriate for concentrations equal to, or less than $1\ mol/l$, where $aH+ \equiv [H+]$, that is, $1\ mol/L\ HCl$ has a $pH$ of zero. $$$$ To relate this to standard molality ($b^\circ$), typically taken as $1 \ mol/kg$, consideration is given to the activity ($a_{H^+}$) of the hydrogen ions. $$$$ The activity can be expressed as: $$a_{H^+} = \gamma_{H^+} \times m_{H^+}$$ Where, $\gamma_{H^+}$ is the activity coefficient, which adjusts the molality to account for non-ideal behavior due to interactions between ions in the solution. $m_{H^+}$ is the molality of hydrogen ions in the solution relative to the standard molality, expressed in $mol/kg$. $$$$ The expansion of $pH$ then becomes: $$\text{pH} = -log_{10}\left(m_{H+}\times\gamma_{H^+}\right)$$ $$$$ This definition is relevant in more concentrated solutions or when precise thermodynamic calculations are required. It reflects how the properties of the solution deviate from ideal behavior and provides a more accurate understanding of the $pH$ under various conditions. $$$$ While $pH$ is a universally recognized scale for expressing hydrogen ion activity, its appropriateness and accuracy can diminish under conditions of extremely high ionic strength, non-aqueous environments, high temperatures, or very high or low $pH$ values. In such cases, alternative measurement strategies might be required to obtain meaningful and accurate descriptions of acidity or basicity.
Unsure about dimensionality of pH; conversion requires a log function not just a multiplier
psychoacoustical unit for the loudness level, to describe the emotionally sense of the sound level, with which a human will understand an acoustic noise event as an hearing event
A phot (ph) is a photometric unit of illuminance, or luminous flux through an area. It is not an SI unit, but rather is associated with the older centimetre gram second system of units. Metric dimensions: $illuminance = luminous intensity \times solid angle / length$.
Phot
"Imperial Pint" is an Imperial unit for 'Volume' expressed as $pint$.
Imperial Pint
unit of the volume (both for fluids and for dry measures) according to the Imperial system of units
Pint (UK)
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the unit for time day
Pint (UK) per Day
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the unit for time hour
Pint (UK) per Hour
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the unit for time minute
Pint (UK) per Minute
unit of the volume pint (UK) (both for fluids and for dry measures) according to the Imperial system of units divided by the SI base unit second
Pint (UK) per Second
"US Liquid Pint" is a unit for 'Liquid Volume' expressed as $pt$.
Us Liquid Pint
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the unit for time day
Pint (us Liquid) per Day
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the unit for time hour
Pint (us Liquid) per Hour
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the unit for time minute
Pint (us Liquid) per Minute
unit of the volume pint (US liquid) according to the Anglo-American system of units divided by the SI base unit second
Pint (us Liquid) per Second
"US Dry Pint" is a C.G.S System unit for 'Dry Volume' expressed as $dry_pt$.
Us Dry Pint
both, the smallest unit of a digital raster graphic as well as the display on a screen with raster control
$\textit{Pixel Area}$ is a unit of measure for the area subtended by some number of pixels; sometimes used in image processing.
Pixel Area is a unit of measure for the area subtended by some number of pixels; sometimes used in image processing.
$\textit{Pixel Count}$ is a unit of measure for the number of pixels, sometimes used as a measure of resolution.
Pixel Count is a unit of measure for the number of pixels, sometimes used as a measure of resolution.
unit of the volume according to the Imperial system of units
Peck (UK)
unit of the volume peck (UK) according to the Imperial system of units divided by the unit for time day
Peck (UK) per Day
unit of the volume peck (UK) according to the Imperial system of units divided by the unit for time hour
Peck (UK) per Hour
unit of the volume peck (UK) according to the Imperial system of units divided by the unit for time minute
Peck (UK) per Minute
unit of the volume peck (UK) according to the Imperial system of units divided by the SI base unit second
Peck (UK) per Second
A peck is an imperial and U.S. customary unit of dry volume, equivalent to 2 gallons or 8 dry quarts or 16 dry pints. Two pecks make a kenning (obsolete), and four pecks make a bushel. In Scotland, the peck was used as a dry measure until the introduction of imperial units as a result of the Weights and Measures Act of 1824. The peck was equal to about 9 litres (in the case of certain crops, such as wheat, peas, beans and meal) and about 13 litres (in the case of barley, oats and malt). A firlot was equal to 4 pecks and the peck was equal to 4 lippies or forpets.
Us Peck
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the unit for time day
Peck (us Dry) per Day
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the unit for time hour
Peck (us Dry) per Hour
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the unit for time minute
Peck (us Dry) per Minute
unit of the volume peck (US dry) as dry measure according to the Anglo-American system of units divided by the SI base unit second
Peck (us Dry) per Second
The poise is the unit of dynamic viscosity in the centimetre gram second system of units. It is named after Jean Louis Marie Poiseuille.
Poise
Poise per Bar
[CGS] unit poise divided by the SI base unit kelvin
[CGS] unit poise divided by the SI derived unit pascal
0.001-fold of the unit of the weight, defined as a mass of 1 kg which finds out about a weight strength from 1 kp by the gravitational force at sea level which corresponds to a strength of 9,806 65 newton
Dimensionless unit for concentration. Recommended practice is to use specific units such as $ug/l$.
Parts per Billion
Parts per MilliOn
Unit for expansion ratios expressed as parts per million per Kelvin.
Parts-per-milliOn per Kelvin
trillionth of a quantity, unit of proportion equal to 10⁻¹²
Part per Trillion
Parts per Thousand
Parts-per-thousand per Hour
Parts per Ten MilliOn
Unit for expansion ratios expressed as parts per ten million per Kelvin.
Parts-per-ten MilliOn per Kelvin
Parts per Trillion by Volume
Pounds of force per square inch, the unit for pressure as a compounded unit pound-force according to the Anglo-American system of units divided by the power of the unit Inch according to the Anglo-American and Imperial system of units by exponent 2
Psi
product of the composed unit for pressure (pound-force per square inch) and the composed unit for volume flow (cubic inch per second)
Psi Cubic Inch per Second
product of the composed unit for pressure (pound-force per square inch) and the composed unit for volume flow (litre per second)
Psi Liter per Second
Psi Litre per Second
product of the composed unit for pressure (pound-force per square inch) and the composed unit for volume flow (cubic metre per second)
Psi Cubic Meter per Second
Psi Cubic Metre per Second
compound unit for pressure (pound-force according to the Anglo-American unit system divided by the power of the unit inch according to the Anglo-American and Imperial system of units with the exponent 2) divided by the unit inch according to the Anglo-American and Imperial system of units
composed unit for pressure (pound-force per square inch) divided by the composed unit for pressure (pound-force per square inch)
Psi per Psi
product of the composed unit for pressure (pound-force per square inch) and the square inch) and the composed unit for volume flow (cubic yard per second)
Psi Cubic Yard per Second
Practical salinity scale 1978 (PSS-78) is used for ionic content of seawater determined by electrical conductivity. Salinities measured using PSS-78 do not have units, but are approximately scaled to parts-per-thousand for the valid range. The suffix psu or PSU (denoting practical salinity unit) is sometimes added to PSS-78 measurement values. The addition of PSU as a unit after the value is "formally incorrect and strongly discouraged".
Practical Salinity Unit
In typography, a point is the smallest unit of measure, being a subdivision of the larger pica. It is commonly abbreviated as pt. The point has long been the usual unit for measuring font size and leading and other minute items on a printed page.
Point
unit for the type size correspondening to: 1 bp = 1/72 in
1,125,899,906,842,624-fold of the unit bit divided by the SI base unit metre
1,125,899,906,842,624-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,125,899,906,842,624-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
The pebibyte is a standards-based binary multiple (prefix pebi, symbol Pi) of the byte, a unit of digital information storage. The pebibyte unit symbol is PiB. 1 pebibyte = 1125899906842624bytes = 1024 tebibytes The pebibyte is closely related to the petabyte, which is defined as $10^{15} bytes = 1,000,000,000,000,000 bytes$.
Pebibyte
1,000,000,000,000,000-fold of the unit bit divided by the SI base unit second
1,000,000,000,000,000-fold of the unit becquerel
A petabyte is a unit of information equal to one quadrillion bytes, or 1024 terabytes. The unit symbol for the petabyte is PB. The prefix peta (P) indicates the fifth power to 1000: 1 PB = 1000000000000000B, 1 million gigabytes = 1 thousand terabytes The pebibyte (PiB), using a binary prefix, is the corresponding power of 1024, which is more than $12\% $greater ($2^{50} bytes = 1,125,899,906,842,624 bytes$).
PetaByte
PetaCoulomb
1,000,000,000,000,000-fold of the unit floating point operations divided by the SI base unit second
PetaFloating Point Operations per Second
1,000,000,000,000,000-fold of the derived SI unit joule
PetaJoule
1,000,000,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
1,000,000,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
1,000,000,000,000,000-fold of the SI derived unit ampere
PicoAmpere
0.000000000001-fold of the SI base unit ampere divided by the 100-fold of the SI derived unit pascal
PicoAmps per MicroMole Litre
PicoCoulomb
"PicoF" is a common unit of electric capacitance equal to $10^{-12} farad$. This unit was formerly called the micromicrofarad.
PicoFarad
0.000000000001-fold of the SI derived unit farad divided by the SI base unit metre
PicoFarad per Meter
PicoFarad per Metre
10**-12 grams or one 10**-15 of the SI standard unit of mass (kilogram).
PicoGrams
One part per 10**12 (trillion) by mass of the measurand in the matrix.
PicoGrams per Gram
One part per 10**15 by mass of the measurand in the matrix.
PicoGrams per KiloGram
One 10**15 part of the SI standard unit of mass of the measurand per litre volume of matrix..
PicoGrams per Litre
One part per 10**9 (billion) by mass of the measurand in the matrix.
PicoGrams per MilliGram
One 10**15 part of the SI standard unit of mass of the measurand per millilitre volume of matrix.
PicoGrams per MilliLitre
0.000000000001-fold of the SI derived unit henry
PicoHenry
0.000000000001-fold of the SI derived unit joule divided by the SI base unit second
PicoKatal per Liter
PicoKatal per Litre
PicoLitre
0.000000000001-fold of the SI base unit metre
PicoMeter
PicoMetre
PicoMole
PicoMoles per KiloGram
PicoMoles per Litre
A change in the quantity of matter of 10^-12 moles in the SI unit of volume scaled by 10^-3 over a period of 86400 seconds.
PicoMoles per Litre Day
A change in the quantity of matter of 10^-12 moles in the SI unit of volume scaled by 10^-3 over a period of 3600 seconds.
PicoMoles per Litre Hour
PicoMoles per Metre Watt Second
PicoMoles per Square Metre Day
PicoMoles per Cubic Metre
PicoMoles per Cubic Metre Second
PicoPascal
0.000000000001-fold of the SI derived unit pascal divided by the 1 000-fold of the SI base unit metre
PicoPascal per KiloMeter
PicoPascal per KiloMetre
0.000000000001-fold of the SI derived unit siemens
PicoSiemens
0.000000000001-fold of the SI derived unit Siemens divided by the SI base unit metre
PicoSiemens per Meter
PicoSiemens per Metre
0.000000000001-fold of the SI base unit second
PicoSecond
0.000000000001-fold of the SI derived unit volt
0.000000000001-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000000001-fold of the unit volt ampere reactive
0.000000000001-fold of the SI derived unit watt
PicoWatt
The power (scaled by 10^-12) per SI unit of area (scaled by 10^-4) produced per SI unit of volume (scaled by 10^-3).
PicoWatts per Square CentiMetre Litre
0.000000000001-fold of the SI derived unit watt divided by the power of the SI base unit metre with the exponent 2
PicoWatt per Square Meter
PicoWatt per Square Metre
Planck Area
In physics, the Planck charge, denoted by, is one of the base units in the system of natural units called Planck units. It is a quantity of electric charge defined in terms of fundamental physical constants. The Planck charge is defined as: coulombs, where: is the speed of light in the vacuum, is Planck's constant, is the reduced Planck constant, is the permittivity of free space is the elementary charge = (137.03599911) is the fine structure constant. The Planck charge is times greater than the elementary charge $e$ carried by an electron.
Planck Charge
The Planck current is the unit of electric current, denoted by IP, in the system of natural units known as Planck units. $\approx 3.479 \times 10 A$, where: the Planck time is the permittivity in vacuum and the reduced Planck constant G is the gravitational constant c is the speed of light in vacuum. The Planck current is that current which, in a conductor, carries a Planck charge in Planck time. Alternatively, the Planck current is that constant current which, if maintained in two straight parallel conductors of infinite length and negligible circular cross-section, and placed a Planck length apart in vacuum, would produce between these conductors a force equal to a Planck force per Planck length.
Planck Current
Planck Current Density
The Planck density is the unit of density, denoted by $\rho_P$, in the system of natural units known as Planck units. $1\ \rho_P \ is \approx 5.155 \times 10^{96} kg/m^3$. This is a unit which is very large, about equivalent to $10^{23}$ solar masses squeezed into the space of a single atomic nucleus. At one unit of Planck time after the Big Bang, the mass density of the universe is thought to have been approximately one unit of Planck density.
Planck Density
In physics, the unit of energy in the system of natural units known as Planck units is called the Planck energy, denoted by $E_P$. $E_P$ is a derived, as opposed to basic, Planck unit. An equivalent definition is:$E_P = \hbar / T_P$ where $T_P$ is the Planck time. Also: $E_P = m_P c^2$ where $m_P$ is the Planck mass.
$E_\rho = \sqrt{\frac{ \hbar c^5}{G}} \approx 1.936 \times 10^9 J \approx 1.22 \times 10^{28} eV \approx 0.5433 MWh$, where $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant, and $G$ is the gravitational constant.
Planck Energy
Planck force is the derived unit of force resulting from the definition of the base Planck units for time, length, and mass. It is equal to the natural unit of momentum divided by the natural unit of time.
Planck Force
Planck Frequency
Planck Angular Frequency
The Planck impedance is the unit of electrical resistance, denoted by ZP, in the system of natural units known as Planck units. The Planck impedance is directly coupled to the impedance of free space, Z0, and differs in value from Z0 only by a factor of $4\pi$. If the Planck charge were instead defined to normalize the permittivity of free space, $\epsilon_0$, rather than the Coulomb constant, $1/(4\pi\epsilon_0)$, then the Planck impedance would be identical to the characteristic impedance of free space.
$Z_P = \frac{V_P}{I_P}= \frac{1}{4\pi\epsilon_0c}=\frac{\mu_oc}{4\pi}=\frac{Z_0}{4\pi}=29.9792458\Omega$\where $V_P$ is the Planck voltage, $I_P$ is the Planck current, $c$ is the speed of light in a vacuum, $\epsilon_0$ is the permittivity of free space, $\mu_0$ is the permeability of free space, and $Z_0$ is the impedance of free space.
Planck Impedance
In physics, the Planck length, denoted $\ell_P$, is a unit of length, equal to $1.616199(97)×10^{-35}$ metres. It is a base unit in the system of Planck units. The Planck length can be defined from three fundamental physical constants: the speed of light in a vacuum, Planck's constant, and the gravitational constant.
$\ell_P = \sqrt{\frac{ \hbar G}{c^3}} \approx 1.616199(97)) \times 10^{-35} m$, where $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant, and $G$ is the gravitational constant. The two digits enclosed by parentheses are the estimated standard error associated with the reported numerical value.
Planck Length
Planck Mass
Planck momentum is the unit of momentum in the system of natural units known as Planck units. It has no commonly used symbol of its own, but can be denoted by, where is the Planck mass and is the speed of light in a vacuum. Then where is the reduced Planck's constant, is the Planck length, is the gravitational constant. In SI units Planck momentum is $\approx 6.5 kg m/s$.
Planck Momentum
The Planck energy divided by the Planck time is the Planck power $P_p $, equal to about $3.62831 \times 10^{52} W$. This is an extremely large unit; even gamma-ray bursts, the most luminous phenomena known, have output on the order of $1 \times 10^{45} W$, less than one ten-millionth of the Planck power.
$P_p = {\frac{ c^5}{G}}$, where $c$ is the speed of light in a vacuum, and $G$ is the gravitational constant.
Planck Power
Planck Pressure
Plancktemperature
In physics, the Planck time, denoted by $t_P$, is the unit of time in the system of natural units known as Planck units. It is the time required for light to travel, in a vacuum, a distance of 1 Planck length. The unit is named after Max Planck, who was the first to propose it. The formula for $\textit{PlankTime}$ is: $$ \\ t_P \equiv \sqrt{\frac{\hbar G}{c^5}} \approx 5.39106(32) \times 10^{-44} s$$ where, $c$ is the speed of light in a vacuum, $\hbar$ is the reduced Planck's constant (defined as $\hbar = \frac{h}{2 \pi}$ and $G$ is the gravitational constant. The two digits between parentheses denote the standard error of the estimated value.
Planck Time
Planck Volt
Planck Volume
Quart (UK)
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the unit for time day
Quart (uk Liquid) per Day
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the unit for time hour
Quart (uk Liquid) per Hour
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the unit for time minute
Quart (uk Liquid) per Minute
unit of the volume quart (UK liquid) for fluids according to the Imperial system of units divided by the SI base unit second
Quart (uk Liquid) per Second
"US Liquid Quart" is a unit for 'Liquid Volume' expressed as $qt$.
Us Liquid Quart
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the unit for time day
Quart (us Liquid) per Day
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the unit for time hour
Quart (us Liquid) per Hour
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the unit for time minute
Quart (us Liquid) per Minute
unit fo the volume quart (US liquid) for fluids according to the Anglo-American system of units divided by the SI base unit second
Quart (us Liquid) per Second
"US Dry Quart" is a unit for 'Dry Volume' expressed as $dry_qt$.
Us Dry Quart
A $\textit{quad}$ is a unit of energy equal to $10 BTU$, or $1.055 \times 10\,\text{joule}$, which is $1.055 exajoule$ or $EJ$ in SI units. The unit is used by the U.S. Department of Energy in discussing world and national energy budgets. Some common types of an energy carrier approximately equal 1 quad are: 8,007,000,000 Gallons (US) of gasoline, 293,083,000,000 Kilowatt-hours (kWh), 36,000,000 Tonnes of coal, 970,434,000,000 Cubic feet of natural gas, 5,996,000,000 UK gallons of diesel oil, 25,200,000 Tonnes of oil, 252,000,000 tonnes of TNT which is five times the energy of the Tsar Bomba nuclear test.
Quad
unit of the mass according to the avoirdupois system of units: 1 qr. l. = 28 lb
Quarter (UK)
Not to be confused with roentgen equivalent man or roentgen equivalent physical. The roentgen (symbol R) is an obsolete unit of measurement for the kerma of X-rays and gamma rays up to 3 MeV.
Roentgen
unit roentgen, the use of which is no longer permitted divided by the SI base unit second
The radian is the standard unit of angular measure, used in many areas of mathematics. It describes the plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc. In the absence of any symbol radians are assumed, and when degrees are meant the symbol $^{\ circ}$ is used.
The radian is the standard unit of angular measure, used in many areas of mathematics. It describes the plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc. The unit was formerly a SI supplementary unit, but this category was abolished in 1995 and the radian is now considered a SI derived unit. The SI unit of solid angle measurement is the steradian. The radian is represented by the symbol "rad" or, more rarely, by the superscript c (for "circular measure"). For example, an angle of 1.2 radians would be written as "1.2 rad" or "1.2c" (the second symbol is often mistaken for a degree: "1.2u00b0"). As the ratio of two lengths, the radian is a "pure number" that needs no unit symbol, and in mathematical writing the symbol "rad" is almost always omitted. In the absence of any symbol radians are assumed, and when degrees are meant the symbol u00b0 is used. [Wikipedia]
The radian and steradian are special names for the number one that may be used to convey information about the quantity concerned. In practice the symbols rad and sr are used where appropriate, but the symbol for the derived unit one is generally omitted in specifying the values of dimensionless quantities.
Radian
Radiano
Radiant
Radiante
Radián
Radyan
Ακτίνιο
Радиан
רדיאן
راديان
رادیان
ラジアン
Radian Square Meter per KiloGram
Radian Square Metre per KiloGram
Radian Square Meter per Mole
Radian Square Metre per Mole
"Radian per Hour" is a unit for 'Angular Velocity' expressed as $rad/h$.
Radian per Hour
Radian Na Metr
Radian Par Mètre
Radian per Meter
Radian per Metre
Radiane Pe Metru
Radiano Por Metro
Radiant Je Meter
Radiante Al Metro
Radián Por Metro
Radiánů Na Metr
Radyan Bölü Metre
Радиан На Метр
رادیان بر متر
प्रति मीटर वर्ग मीटर
ラジアン毎メートル
弧度每米
Radian Per Minute (rad/min) is a unit in the category of Angular velocity. It is also known as radians per minute, radian/minute. Radian Per Minute (rad/min) has a dimension of aT-1 where $T$ is time. It can be converted to the corresponding standard SI unit rad/s by multiplying its value by a factor of 0.0166666666667.
Radian per Minute
"Radian per Second" is the SI unit of rotational speed (angular velocity), and, also the unit of angular frequency. The radian per second is defined as the change in the orientation of an object, in radians, every second.
Radian Je Sekunde
Radian Na Sekundo
Radian Na Sekundę
Radian Par Seconde
Radian Pe Secundă
Radian per Saat
Radian per Second
Radiano Por Segundo
Radiante Al Secondo
Radián Por Segundo
Radián Za Sekundu
Radyan Bölü Saniye
Радиан В Секунду
راديان في الثانية
رادیان بر ثانیه
ラジアン毎秒
弧度每秒
Angular acceleration is the rate of change of angular velocity. In SI units, it is measured in radians per Square second ($rad/s^2$), and is usually denoted by the Greek letter $\alpha$.
Radian per Square Second
The $rad$ is a deprecated unit of absorbed radiation dose, defined as $1 rad = 0.01\,Gy = 0.01 J/kg$. It was originally defined in CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter. It has been replaced by the gray in most of the world. A related unit, the $roentgen$, was formerly used to quantify the number of rad deposited into a target when it was exposed to radiation. The F-factor can used to convert between rad and roentgens. The material absorbing the radiation can be human tissue or silicon microchips or any other medium (for example, air, water, lead shielding, etc.).
Rad
The $Rayl$ is one of two units of specific acoustic impedance. When sound waves pass through any physical substance the pressure of the waves causes the particles of the substance to move. The sound specific impedance is the ratio between the sound pressure and the particle velocity it produces. The specific impedance is one rayl if unit pressure produces unit velocity. It is defined as follows: $1\; rayl = 1 dyn\cdot s\cdot cm^{-3}$ Or in SI as: $1 \; rayl = 10^{-1}Pa\cdot s\cdot m^{-1}$, which equals $10\,N \cdot s\cdot m^{-3}$.
Rayl
A Rem is a deprecated unit used to measure the biological effects of ionizing radiation. The rem is defined as equal to 0.01 sievert, which is the more commonly used unit outside of the United States. Equivalent dose, effective dose, and committed dose can all be measured in units of rem. These quantities are products of the absorbed dose in rads and weighting factors. These factors must be selected for each exposure situation; there is no universally applicable conversion constant from rad to rem. A rem is a large dose of radiation, so the millirem (mrem), which is one thousandth of a rem, is often used for the dosages commonly encountered, such as the amount of radiation received from medical x-rays and background sources.
Rem
unit for the equivalent tin rate relating to DIN 1301-3:1979: 1 rem/s = 0.01 J/(kg·s) = 1 Sv/s
"Revolution" is a unit for 'Plane Angle' expressed as $rev$.
Revolution
"Revolution per Hour" is a unit for 'Angular Velocity' expressed as $rev/h$.
Revolution per Hour
"Revolution per Minute" is a unit for 'Angular Velocity' expressed as $rev/min$. One revolution per minute is equivalent to 1/60 hertz.
Revolution per Minute
Revolution per Minute per Second is a unit for Angular Acceleration (sometimes called Change of RPM, crpm)
Revolution per Minute per Second
"Revolution per Second" is a unit for 'Angular Velocity' expressed as $rev/s$.
Revolution per Second
"Revolution per Square Second" is a C.G.S System unit for 'Angular Acceleration' expressed as $rev-per-s^2$.
Revolution per Square Second
non SI-conforming unit of fluidity of dynamic viscosity
A unit of distance equal to 5.5 yards (16 feet 6 inches).
Rod
RPK (Reads Per Kilobases) are obtained by dividing read counts by gene lengths (expressed in kilo-nucleotides).
Reads per KiloBase
The roentgen equivalent man (rem) is a CGS unit of equivalent dose, effective dose, and committed dose, which are dose measures used to estimate potential health effects of low levels of ionizing radiation on the human body.
Roentgen Equivalent Man
unit Richter magnitude expressing size of an earthquake in accordance to a specific scale
$\textit{Siemens}$ is the SI unit of electric conductance, susceptance, and admittance. The most important property of a conductor is the amount of current it will carry when a voltage is applied. Current flow is opposed by resistance in all circuits, and by also by reactance and impedance in alternating current circuits. Conductance, susceptance, and admittance are the inverses of resistance, reactance, and impedance, respectively. To measure these properties, the siemens is the reciprocal of the ohm. In other words, the conductance, susceptance, or admittance, in siemens, is simply 1 divided by the resistance, reactance or impedance, respectively, in ohms. The unit is named for the German electrical engineer Werner von Siemens (1816-1892). $$\ \text{Siemens}\equiv\frac{\text{A}}{\text{V}}\equiv\frac{\text{amp}}{\text{volt}}\equiv\frac{\text{F}}{\text {s}}\equiv\frac{\text{farad}}{\text{second}}$$
Siemens
Simens
Ζίμενς
Сименс
סימנס
زیمنس
سيمنز
सीमैन्स
ジーメンス
西门子
Siemens Square Meter per Mole
Siemens Square Metre per Mole
SI derived unit Siemens divided by the 0.01-fold of the SI base unit metre
Siemens per CentiMeter
Siemens per CentiMetre
SI derived unit siemens divided by the SI base unit metre
Siemens Al Metro
Siemens Bölü Metre
Siemens Je Meter
Siemens Na Meter
Siemens Par Mètre
Siemens Pe Metru
Siemens Por Metro
Siemens per Meter
Siemens per Metre
Siemensů Na Metr
Simens Na Metr
Сименс На Метр
زیمنس بر متر
प्रति मीटर सीमैन्स
ジーメンス毎メートル
西门子每米
The number of discrete samples of some thing per second.
Sample per Second
The $\textit{standard cubic foot}$ (scf) is a unit representing the amount of gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic foot are 60 degrees Fahrenheit and 14.7 pounds per square inch (psi) of pressure.
Standard Cubic Foot
The $\textit{standard cubic foot per hour}$ (scfm) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic foot per minute are 60 degrees Fahrenheit and 14.7 pounds per square inch (psi) of pressure.
Standard Cubic Foot per Hour
The $\textit{standard cubic foot per minute}$ (scfm) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic foot at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic foot per minute are 60 degrees Fahrenheit and 14.7 pounds per square inch (psi) of pressure.
Standard Cubic Foot per Minute
The $\textit{standard cubic metre}$ (scm) is a unit representing the amount of gas (such as natural gas) contained in a volume of one cubic metre at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic metre are 0 degrees Celsius and 101.325 kilopascals (kPa) of pressure.
Standard Cubic Meter
Standard Cubic Metre
The $\textit{standard cubic metre per hour}$ (scmh) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic metre at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic metre per minute are 0 degrees Celsius and 101.325 kilopascals (kPa) of pressure.
Standard Cubic Meter per Hour
Standard Cubic Metre per Hour
The $\textit{standard cubic metre per minute}$ (scmm) is the molar flow rate of a gas (such as natural gas) contained in a volume of one cubic metre at reference temperature and pressure conditions. As such, it is a measure of the actual amount of gas, not the volume of the gas. The reference conditions for standard cubic metre per minute are 0 degrees Celsius and 101.325 kilopascals (kPa) of pressure.
Standard Cubic Meter per Minute
Standard Cubic Metre per Minute
The $Second$ (symbol: $s$) is the base unit of time in the International System of Units (SI) and is also a unit of time in other systems of measurement. Between the years1000 (when al-Biruni used seconds) and 1960 the second was defined as $1/86400$ of a mean solar day (that definition still applies in some astronomical and legal contexts). Between 1960 and 1967, it was defined in terms of the period of the Earth's orbit around the Sun in 1900, but it is now defined more precisely in atomic terms. Under the International System of Units (via the International Committee for Weights and Measures, or CIPM), since 1967 the second has been defined as the duration of ${9192631770}$ periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.In 1997 CIPM added that the periods would be defined for a caesium atom at rest, and approaching the theoretical temperature of absolute zero, and in 1999, it included corrections from ambient radiation.
Másodperc
Saat
Saniye
Second
Seconde
Secondo
Secundum
Secundă
Segundo
Sekunda
Sekunde
Δευτερόλεπτο
Секунда
שנייה
ثانية
ثانیه
सैकण्ड
"Second Square Foot" is an Imperial unit for 'Area Time' expressed as $s-ft^{2}$.
Second Square Foot
quotient of the unit of the mass avoirdupois pound according to the avoirdupois system of units per power of the unit foot according to the Anglo-American and the Imperial system of units with the exponent 3 and unit of the mass avoirdupois pound according to the avoirdupois system of units per product of foot according to the Anglo-American and the Imperial system of units and SI base unit second
unit of the Einstein transition probability for spontaneous or inducing emissions and absorption according to ISO 80000-7:2008, expressed as SI base unit second divided by the SI base unit kilogramm
Seconds per Metre
unit of the spectral density of the vibration methods as SI base unit second divided by the power of the SI base unit metre with the exponent 3 and the unit radian
Second per Radian Cubic Meter
Second per Radian Cubic Metre
"Square Second" is a unit for 'Square Time' expressed as $s^{2}$.
Square Second
A shake is an informal unit of time equal to 10 nanoseconds. It has applications in nuclear physics, helping to conveniently express the timing of various events in a nuclear explosion. The typical time required for one step in the chain reaction (i.e. the typical time for each neutron to cause a fission event which releases more neutrons) is of order 1 shake, and the chain reaction is typically complete by 50 to 100 shakes.
Shake
Shannon
The "Shannon per Second" is a unit of information rate.
Shannon per Second
The slug is a unit of mass associated with Imperial units. It is a mass that accelerates by $1 ft/s$ when a force of one pound-force ($lbF$) is exerted on it. With standard gravity $gc = 9.80665 m/s$, the international foot of $0.3048 m$ and the avoirdupois pound of $0.45359237 kg$, one slug therefore has a mass of approximately $32.17405 lbm$ or $14.593903 kg$. At the surface of the Earth, an object with a mass of 1 slug exerts a force of about $32.17 lbF$ or $143 N$.
Slug
unit slug for mass according to an English engineering system divided by the unit day
Slug per Day
"Slug per Foot" is an Imperial unit for 'Mass Per Length' expressed as $slug/ft$.
Slug per Foot
$\textit{Slug per Foot Second}$ is a unit for 'Dynamic Viscosity' expressed as $slug/(ft-s)$.
Slug per Foot Second
"Slug per Square Foot" is an Imperial unit for 'Mass Per Area' expressed as $slug/ft^{2}$.
Slug per Square Foot
"Slug per Cubic Foot" is an Imperial unit for 'Density' expressed as $slug/ft^{3}$.
Slug per Cubic Foot
unit slug for mass slug according to the English engineering system divided by the unit hour
Slug per Hour
unit slug for the mass according to the English engineering system divided by the unit minute
Slug per Minute
"Slug per Second" is an Imperial unit for 'Mass Per Time' expressed as $slug/s$.
Slug per Second
psycho-acoustical unit for the subjective loudness of a tone, whereby the loudness 1 sone is allocated to the loudness level 40 phon
the sunprotection factor is a dimensionless value expressing the required amount of protection against solar radiation
dimensionless atomic value expressing a system’s spin
The steradian (symbol: sr) is the SI unit of solid angle. It is used to describe two-dimensional angular spans in three-dimensional space, analogous to the way in which the radian describes angles in a plane. The radian and steradian are special names for the number one that may be used to convey information about the quantity concerned. In practice the symbols rad and sr are used where appropriate, but the symbol for the derived unit one is generally omitted in specifying the values of dimensionless quantities.
Estereorradián
Esterradiano
Steradian
Steradiant
Steradiante
Steradián
Steradyan
Stéradian
Szteradián
Στερακτίνιο
Стерадиан
סטרדיאן
استرادیان
ستراديان
ステラジアン
球面度
$\textit{Stokes (St)}$ is a unit in the category of Kinematic viscosity. This unit is commonly used in the cgs unit system. Stokes (St) has a dimension of $L^2T^{-1}$ where $L$ is length, and $T$ is time. It can be converted to the corresponding standard SI unit $m^2/s$ by multiplying its value by a factor of 0.0001.
Stokes
[CGS] unit stokes divided by the unit bar
[CGS] unit stokes divided by the SI base unit kelvin
[CGS] unit stokes divided by the SI derived unit pascal
non SI-conform unit of the volume of readily finished wood material : 1 standard = 1,980 board feet or approximate 4.672 cubic metre
Standard
The $\textit{stilb (sb)}$ is the CGS unit of luminance for objects that are not self-luminous. It is equal to one candela per square centimeter or 10 nits (candelas per square meter). The name was coined by the French physicist A. Blondel around 1920. It comes from the Greek word stilbein meaning 'to glitter'. It was in common use in Europe up to World War I. In North America self-explanatory terms such as candle per square inch and candle per square meter were more common. The unit has since largely been replaced by the SI unit: $\textit{candela per square meter}$.
Stilb
The stere is a unit of volume in the original metric system equal to one cubic metre. The stere is typically used for measuring large quantities of firewood or other cut wood, while the cubic meter is used for uncut wood. It is not part of the modern metric system (SI). In Dutch there's also a kuub, short for kubieke meter which is similar but different.
Stere
Electric susceptibility is a dimensionless proportionality constant that indicates the degree of polarization of a dielectric material in response to an applied electric field. Here P = epsilon_0 * chi_e * E. Where epsilon_0 is the electric permittivity of free space (electric constant), P is the polarization density of the material chi_e is the electric susceptibility and E is the electric field.
\chi_{\text{e}} = \frac{{\mathbf P}}{\varepsilon_0{\mathbf E}}
Electric Susceptibility Unit
Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field. Here M = chi * H. Where M is the magnetization of the material (the magnetic dipole moment per unit volume), measured in amperes per meter, and H is the magnetic field strength, also measured in amperes per meter. Chi is therefore a dimensionless quantity.
\chi_\text{v} = \frac{\mathbf{M}}{\mathbf{H}}
Magnetic Susceptibility Unit
Although the sievert has the same dimensions as the gray (i.e. joules per kilogram), it measures a different quantity. To avoid any risk of confusion between the absorbed dose and the equivalent dose, the corresponding special units, namely the gray instead of the joule per kilogram for absorbed dose and the sievert instead of the joule per kilogram for the dose equivalent, should be used.
Sievert
Sievertum
Siwert
Σίβερτ
Зиверт
Сиверт
זיוורט
زيفرت
سیورت
सैवर्ट
シーベルト
西弗
SI derived unit sievert divided by the unit hour
SI derived unit sievert divided by the unit minute
SI derived unit sievert devided by the SI base unit second
The CGS electromagnetic unit of conductance; one absiemen is the conductance at which a potential of one abvolt forces a current of one abampere; equal to $10^{9}$ siemens. One siemen is the conductance at which a potential of one volt forces a current of one ampere and named for Karl Wilhem Siemens.
Absiemen
The unit of conductance, admittance, and susceptance in the centimeter-gram-second electrostatic system of units.
Statsiemens
The astronomical unit of mass is the solar mass.The symbol $S$ is often used in astronomy to refer to this unit, although $M_{\odot}$ is also common. The solar mass, $1.98844 \times 10^{30} kg$, is a standard way to express mass in astronomy, used to describe the masses of other stars and galaxies. It is equal to the mass of the Sun, about 333,000 times the mass of the Earth or 1,048 times the mass of Jupiter. In practice, the masses of celestial bodies appear in the dynamics of the solar system only through the products GM, where G is the constant of gravitation.
Solar Mass
unit of the mass which is commonly used for the determination of the weight of living beings regarding to the conversion to the avoirdupois system of units: 1 st = 14 lb (av)
Stone (UK)
The SI unit of flux density (or field intensity) for magnetic fields (also called the magnetic induction). The intensity of a magnetic field can be measured by placing a current-carrying conductor in the field. The magnetic field exerts a force on the conductor, a force which depends on the amount of the current and on the length of the conductor. One tesla is defined as the field intensity generating one newton of force per ampere of current per meter of conductor. Equivalently, one tesla represents a magnetic flux density of one weber per square meter of area. A field of one tesla is quite strong: the strongest fields available in laboratories are about 20 teslas, and the Earth's magnetic flux density, at its surface, is about 50 microteslas. The tesla, defined in 1958, honors the Serbian-American electrical engineer Nikola Tesla (1856-1943), whose work in electromagnetic induction led to the first practical generators and motors using alternating current. $T = V\cdot s \cdot m^{-2} = N\cdot A^{-1}\cdot m^{-1} = Wb\cdot m^{-2} = kg \cdot C^{-1}\cdot s^{-1}\cdot A^{-1} = kg \cdot s^{-2}\cdot A^{-1} = N \cdot s \cdot C^{-1}\cdot m^{-1}$ where, $\\$ $A$ = ampere, $C$=coulomb, $m$ = meter, $N$ = newton, $s$ = second, $T$ = tesla, $Wb$ = weber
Tesla
Τέσλα
Тесла
טסלה
تسلا
टैस्ला
テスラ
特斯拉
T-m
T-sec
In the US and parts of Canada, a tablespoon is the largest type of spoon used for eating from a bowl. In the UK and most Commonwealth countries, a tablespoon is a type of large spoon usually used for serving. In countries where a tablespoon is a serving spoon, the nearest equivalent to the US tablespoon is either the dessert spoon or the soup spoon. A tablespoonful, nominally the capacity of one tablespoon, is commonly used as a measure of volume in cooking. It is abbreviated as T, tb, tbs, tbsp, tblsp, or tblspn. The capacity of ordinary tablespoons is not regulated by law and is subject to considerable variation. In most countries one level tablespoon is approximately 15 mL; in Australia it is 20 mL.
Tablespoon
Tex is a unit of measure for the linear mass density of fibers and is defined as the mass in grams per 1000 meters. Tex is more likely to be used in Canada and Continental Europe, while denier remains more common in the United States and United Kingdom. The unit code is 'tex'. The most commonly used unit is actually the decitex, abbreviated dtex, which is the mass in grams per 10,000 meters. When measuring objects that consist of multiple fibers the term 'filament tex' is sometimes used, referring to the mass in grams per 1000 meters of a single filament. Tex is used for measuring fiber size in many products, including cigarette filters, optical cable, yarn, and fabric.
Tex
unit of heat energy in commercial use, within the EU defined: 1 thm (EC) = 100 000 BtuIT
Thm_eec
$\textit{Therm}$ (symbol $thm$) is a non-SI unit of heat energy. It was defined in the United States in 1968 as the energy equivalent of burning 100 cubic feet of natural gas at standard temperature and pressure. In the US gas industry its SI equivalent is defined as exactly $100,000 BTU59^{\circ}{F}$ or $105.4804 megajoules$. Public utilities in the U.S. use the therm unit for measuring customer usage of gas and calculating the monthly bills.
Therm Us
$\textit{Therm}$ (symbol $thm$) is a non-SI unit of heat energy. It was defined in the United States in 1968 as the energy equivalent of burning 100 cubic feet of natural gas at standard temperature and pressure. Industrial processes in the U.S. use therm/h unit most often in the power, steam generation, heating, and air conditioning industries.
Therm Us per Hour
Counting unit for a count of one thousand
Ton of Oil Equivalent
2,000-fold of the Imperial base unit pouund
2,000-fold of the Imperial base unit pound
Ton
Tonne
metric unit tonne divided by the unit for time day
Tonne per Day
unit ton divided by the product of the unit day and the unit bar
unit ton divided by the product of the unit day and the SI base unit Kelvin
A measure of density equivalent to 1000kg per hectare or one Megagram per hectare, typically used to express a volume of biomass or crop yield.
Tonne per Hectare
A measure of density equivalent to 1000kg per hectare per year or one Megagram per hectare per year, typically used to express a volume of biomass or crop yield.
Tonne per Hectare Year
unit tonne divided by the unit for time hour
Tonne per Hour
unit ton divided by the product of the unit hour and the unit bar
unit ton divided by the product of the unit hour and the SI base unit Kelvin
unit ton divided by the SI base unit Kelvin
unit tonne divided by the power of the SI base unit metre with the exponent 3
Tonne per Cubic Meter
Tonne per Cubic Metre
unit ton divided by the product of the power of the SI base unit metre with the exponent 3 and the unit bar
1,000-fold of the SI base unit kilogram divided by the product of the power of the SI base unit metre with the exponent 3 and the SI base unit Kelvin
unit tonne divided by the unit for time minute
Tonne per Minute
unit ton divided by the product of the unit minute and the unit bar
unit ton divided by the product of the unit minute and the SI base unit Kelvin
unit tonne divided by the SI base unit second
Tonne per Second
unit ton divided by the product of the SI base unit second and the unit bar
unit ton divided by the product of the SI base unit second and the SI base unit Kelvin
1,000-fold of the SI base unit kilogram divided by the unit year
Ton per Jaar
Tonne per Year
In the United States, a unit of mass, approximately $29.167\, grams$. The number of milligrams of precious metal in one assay ton of the ore being tested is equal to the number of troy ounces of pure precious metal in one 2000-pound ton of the ore. i.e. a bead is obtained that weights 3 milligrams, thus the precious metals in the bead would equal three troy ounces to each ton of ore with the understanding that this varies considerably in the real world as the amount of precious values in each ton of ore varies considerably.
Assay Ton
Ton of Refrigeration
Ton of Refrigeration Hour
unit of the force according to the American system of units
Ton Force (us Short)
Long ton (weight ton or imperial ton) is the name for the unit called the "ton" in the avoirdupois or Imperial system of measurements, as used in the United Kingdom and several other Commonwealth countries. One long ton is equal to 2,240 pounds (1,016 kg), 1.12 times as much as a short ton, or 35 cubic feet (0.9911 m3) of salt water with a density of 64 lb/ft3 (1.025 g/ml). It has some limited use in the United States, most commonly in measuring the displacement of ships, and was the unit prescribed for warships by the Washington Naval Treaty 1922-for example battleships were limited to a mass of 35,000 long tons (36,000 t; 39,000 short tons).
Long Ton
The long ton per cubic yard density measurement unit is used to measure volume in cubic yards in order to estimate weight or mass in long tons.
Long Ton per Cubic Yard
The tonne (SI unit symbol: t) is a metric system unit of mass equal to 1,000 kilograms (2,204.6 pounds). It is a non-SI unit accepted for use with SI. To avoid confusion with the ton, it is also known as the metric tonne and metric ton in the United States[3] and occasionally in the United Kingdom. In SI units and prefixes, the tonne is a megagram (Mg), a rarely-used symbol, easily confused with mg, for milligram.
Metric Ton
metric unit ton divided by the unit for time day
Metric Tonne per Hectare
unit ton divided by the unit for time minute
unit ton divided by the SI base unit second
Tonne per Second (metric Ton)
traditional unit for volume of cargo, especially in shipping
Ton (uk Shipping)
Ton (us Shipping)
The short ton is a unit of mass equal to 2,000 pounds (907.18474 kg). In the United States it is often called simply ton without distinguishing it from the metric ton (tonne, 1,000 kilograms / 2,204.62262 pounds) or the long ton (2,240 pounds / 1,016.0469088 kilograms); rather, the other two are specifically noted. There are, however, some U.S. applications for which unspecified tons normally means long tons.
Short Ton
unit of the mass ton (US, short) according to the Anglo-American system of units divided by the traditional unit degree Fahrenheit
The short Ton per Hour is a unit used to express a weight processed in a period of time.
Short Ton per Hour
unit of the mass ton (US, short) according to the Anglo-American system of units divided by the product of the unit hour for time and the traditional unit degree Fahrenheit
quotient unit for mass ton (US, short) according to the Anglo-American system of units divided by the unit for time hour divided by the composed unit for pressure (pound-force per square inch)
unit for mass ton (US, short) according to the Anglo-American system of units divided by the composed unit for pressure (pound-force per square inch)
The short ton per cubic yard density measurement unit is used to measure volume in cubic yards in order to estimate weight or mass in short tons.
Short Ton per Cubic Yard
traditional Imperial unit for mass of cargo, especially in the shipping sector
unit of the mass according to the Imperial system of units
Ton (UK)
unit British ton according to the Imperial system of units divided by the unit day
Long Ton (uk) per Day
unit of the density according the Imperial system of units
Long Ton (UK) per Cubic Yard
A ton is a unit of mass in the US customary system, where 1 ton is equal to 2000 pounds of mass.
Ton (US)
unit American ton according to the Anglo-American system of units divided by the unit day
Short Ton (us) per Day
unit ton divided by the unit for time hour
Ton (US) per Hour
Short Ton (US) per Cubic Yard
The \textit{torr} is a non-SI unit of pressure with the ratio of 760 to 1 standard atmosphere, chosen to be roughly equal to the fluid pressure exerted by a millimeter of mercury, i.e. , a pressure of 1 torr is approximately equal to one millimeter of mercury. Note that the symbol (Torr) is spelled exactly the same as the unit (torr), but the letter case differs. The unit is written lower-case, while the symbol of the unit (Torr) is capitalized (as upper-case), as is customary in metric units derived from names. Thus, it is correctly written either way, and is only incorrect when specification is first made that the word is being used as a unit, or else a symbol of the unit, and then the incorrect letter case for the specified use is employed.
Torr
[CGS] unit of the pressure divided by the SI base unit metre
A teaspoon is a unit of volume. In the United States one teaspoon as a unit of culinary measure is $1/3$ tablespoon , that is, $\approx 4.93 mL$; it is exactly $1/6 U.S. fl. oz$, $1/48 \; cup$, and $1/768 \; U.S. liquid gallon$ (see United States customary units for relative volumes of these other measures) and approximately $1/3 cubic inch$. For nutritional labeling on food packages in the U.S., the teaspoon is defined as precisely $5 mL$.
Teaspoon
The unit of magnetic induction in the cgs system, $10^{-4}\,tesla$. Also known as the gauss.
Abtesla
1,099,511,627,776-fold of the unit bit divided by the SI base unit metre
1,099,511,627,776-fold of the unit bit divided by the power of the SI base unit metre with the exponent 2
1,099,511,627,776-fold of the unit bit divided by the power of the SI base unit metre with the exponent 3
The tebibyte is a multiple of the unit byte for digital information. The prefix tebi means 1024^4
Tebibyte
1,000,000,000,000-fold of the unit ampere
1,000,000,000,000-fold of the unit bit divided by the SI base unit second
1,000,000,000,000-fold of the unit becquerel
The terabyte is a multiple of the unit byte for digital information. The prefix tera means 10^12 in the International System of Units (SI), and therefore 1 terabyte is 1000000000000bytes, or 1 trillion bytes, or 1000 gigabytes. 1 terabyte in binary prefixes is 0.9095 tebibytes, or 931.32 gibibytes. The unit symbol for the terabyte is TB or TByte, but not Tb (lower case b) which refers to terabit.
TeraByte
TeraCoulomb
1,000,000,000,000-fold of the unit floating point operations divided by the SI base unit second
TeraFloating Point Operations per Second
1 000 000 000 000-fold of the SI derived unit hertz
1,000,000,000,000-fold of the SI derived unit hertz
TeraHertz
1 000 000 000 000-fold of the SI derived unit joule
1,000,000,000,000-fold of the SI derived unit joule
TeraJoule
1,000,000,000,000-fold of the SI derived unit joule divided by the SI base unit second
1,000,000,000,000-fold of the SI derived unit ohm
TeraOhm
1,000,000,000,000-fold of the SI derived unit volt
1,000,000,000,000-fold of the product of the SI base unit volt with the SI base unit ampere
0.000000000001 of the unit volt ampere reactive
1,000,000,000,000-fold of the SI derived unit watt
TeraWatt
1,000,000,000,000-fold of the product of the SI derived unit watt and the unit hour
TeraWatt Hour
1,000,000,000,000-fold of the product of the SI derived unit watt and the unit hour divided by the unit year
Terawatt hour per year is a unit of energy per time (i.e. power) and denotes the energy (in terawatt hours) created or consumed during one year.
TeraWatt Heure Par An
TeraWatt Hour per Year
TeraWattstunde Pro Jahr
Ton Energy
The unified atomic mass unit (symbol: $u$) or dalton (symbol: $Da$) is the standard unit that is used for indicating mass on an atomic or molecular scale (atomic mass). It is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state,[ and has a value of $1.660538921(73) \times 10^{-27} kg$. One dalton is approximately equal to the mass of one nucleon; an equivalence of saying $1 g mol^{-1}$. The CIPM have categorised it as a 'non-SI unit' because units values in SI units must be obtained experimentally.
Unified Atomic Mass Unit
An explicit unit to say something has no units.
Unitless
Placeholder unit for abstract quantities
A magnetic pole is a unit pole if it exerts a force of one dyne on another pole of equal strength at a distance of 1 cm. The strength of any given pole in cgs units is therefore numerically equal to the force in dynes which it exerts on a unit pole 1 cm away.
Unit Pole
$\textit{Volt}$ is the SI unit of electric potential. Separating electric charges creates potential energy, which can be measured in energy units such as joules. Electric potential is defined as the amount of potential energy present per unit of charge. Electric potential is measured in volts, with one volt representing a potential of one joule per coulomb of charge. The name of the unit honors the Italian scientist Count Alessandro Volta (1745-1827), the inventor of the first battery. The volt also may be expressed with a variety of other units. For example, a volt is also equal to one watt per ampere ($W/A$) and one joule per ampere per second ($J/A/s$).
$\textit{V}\ \equiv\ \text{volt}\ \equiv\ \frac{\text{J}}{\text{C}}\ \equiv\ \frac{\text{joule}}{\text{coulomb}}\ \equiv\ \frac{\text{W.s}}{\text{C}}\ \equiv\ \frac{\text{watt.second}}{\text{coulomb}}\ \equiv\ \frac{\text{W}}{\text{A}}\ \equiv\ \frac{\text{watt}}{\text{amp}}$
Volt
Voltio
Voltium
Wolt
Βολτ
Волт
Вольт
וולט
فولت
ولت
वोल्ट
ボルト
伏特
product of the SI derived unit volt and the SI base unit ampere
Volt Ampere
Volt-ampere
Voltampere
Voltampère
Voltiamperio
Вольт-ампер
فولت. أمبير
product of the unit for apparent by ampere and the unit hour
Volt Ampere Hour
product of the SI derived unit volt and the SI base unit ampere divided by the SI base unit kelvin
unit with special name for reactive power
Volt Ampere Reactive
product of the unit volt ampere reactive and the unit hour
Volt Ampere Reactive Hour
unit volt ampere reactive divided by the SI base unit kelvin
differentiated SI unit volt divided by the composed unit for pressure (pound-force per square inch)
V-m
SI derived unit volt divided by the unit bar
derived SI unit volt divided by the 0.01-fold of the SI base unit metre
Volt per CentiMeter
Volt per CentiMetre
SI derived unit volt divided by the unit inch according to the Anglo-American and the Imperial system of units
Volt per Inch
Volt per Kelvin
SI derived unit volt divided by the the product of the unit litre and the unit minute
The unit $\{Volt Per Meter (V/m)}$ is a unit in the category of Electric field strength. It is also known as volts per meter, volt/meter, volt/metre, volt per metre, volts per metre. This unit is commonly used in the SI unit system. $\{Volt Per Meter}$ has a dimension of $MLT^{-3}I^{-1}$ where $M$ is mass, $L$ is length, $T$ is time, and $I$ is electric current. This unit is the standard SI unit in this category.
Volt Al Metro
Volt Bölü Metre
Volt Je Meter
Volt Na Meter
Volt Par Mètre
Volt Por Metro
Volt per Meter
Volt per Metre
Voltio Por Metro
Voltů Na Metr
Volți Pe Metru
Wolt Na Metr
Вольт На Метр
ولت بر متر
प्रति मीटर वोल्ट
ボルト毎メートル
伏特每米
$\textit{Volt per Square Metre}$ is the divergence at a particular point in a vector field is (roughly) how much the vector field 'spreads out' from that point. Operationally, we take the partial derivative of each of the field with respect to each of its space variables and add all the derivatives together to get the divergence. $\textit{Electric field}$ ($V/m$) differentiated with respect to distance ($m$) yields $V/(m^2)$.
Volt per Square Meter
Volt per Square Metre
SI derived unit volt divided by the 0.000001-fold of the SI base unit second
Volt per MicroSecond
SI derived unit volt divided by the 0.001-fold of the SI base unit metre
Volt per MilliMeter
Volt per MilliMetre
SI derived unit volt divided by the SI derived unit pascal
'Volt per Second' is a unit of magnetic flux equaling one weber. This is the flux passing through a conducting loop and reduced to zero at a uniform rate in one second inducing an electric potential of one volt in the loop.
Volt per Second
SI derived unit volt per SI derived unit volt
Volt Second Per Metre is the product of the SI derived unit volt and the SI base unit second divided by the SI base unit metre
product of the SI derived unit volt and the SI base unit second divided by the SI base unit metre
Volt Second per Meter
Volt Second per Metre
Square Volt per Square Kelvin
Product of the RMS value of the voltage and the RMS value of an alternating electric current
product of the volt ampere and the unit hour
the volt ampere divided by the SI base unit kelvin
A unit of electrical potential equal to one hundred millionth of a volt ($10^{-8}\,volts$), used in the centimeter-gram-second (CGS) system of units. One abV is the potential difference that exists between two points when the work done to transfer one abcoulomb of charge between them equals: $1\,erg\cdot\,1\,abV\,=\,10\,nV$.
Abvolt
In the electromagnetic centimeter-gram-second system of units, 'abvolt per centimeter' is the unit of electric field strength.
Abvolt per CentiMeter
Abvolt per CentiMetre
The magnetic flux whose expenditure in 1 second produces 1 abvolt per turn of a linked circuit. Technically defined in a three-dimensional system, it corresponds in the four-dimensional electromagnetic sector of the SI system to 10 nWb, and is an impractically small unit. In use for some years, the name was agreed by the International Electrotechnical Committee in 1930, along with a corresponding practical unit, the pramaxwell (or pro-maxwell) = $10^{8}$ maxwell.
Abvolt Second
"statvolt" is a unit of voltage and electrical potential used in the cgs system of units. The conversion to the SI system is $1 statvolt = 299.792458 volts$. The conversion factor 299.792458 is simply the numerical value of the speed of light in m/s divided by 106. The statvolt is also defined in the cgs system as $1 erg / esu$. It is a useful unit for electromagnetism because one statvolt per centimetre is equal in magnitude to one gauss. Thus, for example, an electric field of one statvolt/cm has the same energy density as a magnetic field of one gauss. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity. The abvolt is another option for a unit of voltage in the cgs system.
Statvolt
V_stat-centiM
One statvolt per centimetre is equal in magnitude to one gauss. For example, an electric field of one statvolt/cm has the same energy density as a magnetic field of one gauss. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity. The abvolt is another option for a unit of voltage in the cgs system.
Statvolt per CentiMeter
Statvolt per CentiMetre
The SI unit of power. Power is the rate at which work is done, or (equivalently) the rate at which energy is expended. One watt is equal to a power rate of one joule of work per second of time. This unit is used both in mechanics and in electricity, so it links the mechanical and electrical units to one another. In mechanical terms, one watt equals about 0.001 341 02 horsepower (hp) or 0.737 562 foot-pound per second (lbf/s). In electrical terms, one watt is the power produced by a current of one ampere flowing through an electric potential of one volt. The name of the unit honors James Watt (1736-1819), the British engineer whose improvements to the steam engine are often credited with igniting the Industrial Revolution.
$\textit{W}\ \equiv\ \text{watt}\ \equiv\ \frac{\text{J}}{\text{s}}\ \equiv\ \frac{\text{joule}}{\text{second}}\ \equiv\ \frac{\text{N.m}}{\text{s}}\ \equiv\ \frac{\text{newton.metre}}{\text{second}}\ \equiv\ \text{V.A}\ \equiv\ \text{volt.amp}\ \equiv\ \Omega\text{.A}^{2}\ \equiv\ \text{ohm.amp}^{2}$
Vatio
Wat
Watt
Wattium
Βατ
Ват
Ватт
ואט
وات
واط
वाट
ワット
瓦特
The watt hour is a unit of energy, equal to 3,600 joule.
Watthour
product of the SI derived unit watt and the unit hour divided by the SI base unit kilogram
product of the SI derived unit watt and the unit hour divided by the unit litre
A unit of energy per unit area, equivalent to 3,600 joules per square metre.
Watt Hour per Square Metre
The watt hour per cubic meter is a unit of energy density, equal to 3,600 joule per cubic meter.
Watthour per Cubic Meter
Watthour per Cubic Metre
The power per unit area of radiation of a given wavenumber illuminating a target at a given incident angle.
Watt Metre per Square Metre Steradian
product of the SI derived unit watt and the power of the SI base unit metre with the exponent 2
W-m2
W-m2-per-sr
Watt Per Square Centimeter is a unit of heat flux or thermal flux, the rate of heat energy transfer through a given surface.
Watt per Square CentiMeter
Watt per Square CentiMetre
Watt Per Square Foot is a unit of heat flux or thermal flux, the rate of heat energy transfer through a given surface.
Watt per Square Foot
SI derived unit watt divided by the SI derived unit gram
Watt per Gram
Watt Per Square Inch is a unit of heat flux or thermal flux, the rate of heat energy transfer through a given surface.
Watt per Square Inch
Watt Per Kelvin ($W/K$) is a unit in the category of Thermal conductivity.
Watt per Kelvin
SI derived unit watt divided by the SI base unit kilogram
Watt per KiloGram
SI derived unit watt divided by the SI base unit metre
Watts per Metre
SI derived unit watt divided by the product of the SI base unit metre and the unit for temperature degree Celsius
Watt per Meter Kelvin
Watt per Metre Kelvin
"Watt per Square Meter} is a unit of irradiance defined as the power received per area. This is a unit in the category of Energy flux. It is also known as watts per square meter, watt per square metre, watts per square metre, watt/square meter, watt/square metre. This unit is commonly used in the SI unit system. Watt Per Square Meter ($W/m^2$) has a dimension of $MT^{-3"$ where $M$ is mass, and $T$ is time. This unit is the standard SI unit in this category.
Vatio Por Metro Cuadrado
Wat Na Metr Kwadratowy
Watt Al Metro Quadrato
Watt Bölü Metre Kare
Watt Je Quadratmeter
Watt Na Kvadratni Meter
Watt Na Metr Čtvereční
Watt Par Mètre Carré
Watt Pe Metru Pătrat
Watt Por Metro Quadrado
Watt per Meter Persegi
Watt per Square Meter
Watt per Square Metre
Ватт На Квадратный Метр
وات بر مترمربع
واط في المتر المربع
वाट प्रति वर्ग मीटर
ワット毎平方メートル
瓦特每平方米
The unit $\textit{Watt Per Square Meter Kelvin }$ ($W m^{-2} K^{-1}$) is a unit in the category of Thermal heat transfer coefficient. It is also known as $\textit{watt/square meter-kelvin}$. This unit is commonly used in the SI unit system. $\textit{Watt Per Square Meter Kelvin }$ has a dimension of $MT^{-1}Q^{-1}$ where $M$ is mass, $T$ is time, and $Q$ is temperature. This unit is the standard SI unit in this category.
Watt per Square Meter Kelvin
Watt per Square Metre Kelvin
Watt Per Square Meter Per Quartic Kelvin ($W/m2\cdotK4)$ is a unit in the category of light.
Watt per Square Meter Quartic Kelvin
Watt per Square Metre Quartic Kelvin
Watts per Square Metre Metre
Watts per Square Metre Metre Steradian
A unit of spectral radiance, which is the radiance per unit of wavelength. It is watts per square meter per micrometer
A unit of spectral radiance that is the power radiating from a surface per unit of solid angle per unit of wavelength, measured in units of watts per meter squared per micrometer per steradian
Watts per Meter Squared MicroMeter Steradian
Watts per Square Metre NanoMetre
Watts per Square Metre NanoMetre Steradian
Watt Per Square Meter Per Pascal ($W/m^2-pa$) is a unit of Evaporative Heat Transfer.
Watt per Square Meter Pascal
Watt per Square Metre Pascal
$\textit{Watt per steradian per square metre}$ is the SI unit of radiance ($W·sr^{-1}·m^{-2}$), while that of spectral radiance in frequency is the watt per steradian per square metre per hertz ($W·sr^{-1}·m^{-2}·Hz^{-1}$) and that of spectral radiance in wavelength is the watt per steradian per square metre, per metre ($W·sr^{-1}·m^{-3}$), commonly the watt per steradian per square metre per nanometre ($W·sr^{-1}·m^{-2}·nm^{-1}$). It has a dimension of $ML^{-4}T^{-3}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category."
Watt per Square Meter Steradian
Watt per Square Metre Steradian
SI derived unit watt divided by the power of the SI base unit metre with the exponent 3
Watt per Cubic Meter
Watt per Cubic Metre
$\textit{Watt Per Steradian (W/sr)}$ is the unit in the category of Radiant intensity. It is also known as watts per steradian. This unit is commonly used in the SI unit system. Watt Per Steradian (W/sr) has a dimension of $M\cdot L^{-2}\cdot T^{-3}$ where $M$ is mass, $L$ is length, and $T$ is time. This unit is the standard SI unit in this category.
Watt per Steradian
product of the SI derived unit watt and SI base unit second
Watt Second
Watt Seconds per Square Metre
The SI unit of magnetic flux. "Flux" is the rate (per unit of time) at which something crosses a surface perpendicular to the flow. The weber is a large unit, equal to $10^{8}$ maxwells, and practical fluxes are usually fractions of one weber. The weber is the magnetic flux which, linking a circuit of one turn, would produce in it an electromotive force of 1 volt if it were reduced to zero at a uniform rate in 1 second. In SI base units, the dimensions of the weber are $(kg \cdot m^2)/(s^2 \cdot A)$. The weber is commonly expressed in terms of other derived units as the Tesla-square meter ($T \cdot m^2$), volt-seconds ($V \cdot s$), or joules per ampere ($J/A$).
Weber
Weberium
Βέμπερ
Вебер
ובר
وبر
ويبر; فيبر
वैबर
ウェーバ
韦伯
Weber Meter
Weber Metre
SI derived unit weber divided by the SI base unit metre
Weber Al Metro
Weber Bölü Metre
Weber Je Meter
Weber Na Metr
Weber Par Mètre
Weber Pe Metru
Weber Por Metro
Weber per Meter
Weber per Metre
Weberů Na Metr
Вебер На Метр
وبر بر متر
प्रति मीटर वैबर
ウェーバ毎メートル
韦伯每米
derived SI unit weber divided by the 0.001-fold of the SI base unit metre
Weber per MilliMeter
Weber per MilliMetre
Week
A yard is a unit of length in several different systems including United States customary units, Imperial units and the former English units. It is equal to 3 feet or 36 inches. Under an agreement in 1959 between Australia, Canada, New Zealand, South Africa, the United Kingdom and the United States, the yard (known as the "international yard" in the United States) was legally defined to be exactly 0.9144 metres.
Yard
unit yard according to the Anglo-American and the Imperial system of units divided by the unit for temperature degree Fahrenheit
Yard per Degree Fahrenheit
unit yard according to the Anglo-American and Imperial system of units divided by the unit hour
unit yard according to the Anglo-American and Imperial system of units divided by the unit minute
unit yard according to the Anglo-American and the Imperial system of units divided by the composed unit for pressure (pound-force per square inch)
unit yard according to the Anglo-American and Imperial system of units divided by the SI base unit second
unit of the length according to the Anglo-American and Imperial system of units divided by the power of the SI base unit second by exponent 2
The square yard is an imperial/US customary unit of area, formerly used in most of the English-speaking world but now generally replaced by the square metre outside of the U.S. , Canada and the U.K. It is defined as the area of a square with sides of one yard in length. (Gaj in Hindi).
Square Yard
A cubic yard is an Imperial / U.S. customary unit of volume, used in the United States, Canada, and the UK. It is defined as the volume of a cube with sides of 1 yard in length.
Cubic Yard
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for time day
Cubic Yard per Day
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for temperature degree Fahrenheit
Cubic Yard per Degree Fahrenheit
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the unit for the time hour
Cubic Yard per Hour
$\textit{Cubic Yard per Minute}$ is an Imperial unit for 'Volume Per Unit Time' expressed as $yd^{3}/min$.
Cubic Yard per Minute
power of the unit yard according to the Anglo-American and the Imperial system of units with the exponent 3 divided by the composed unit for pressure (pound-force per square inch)
power of the unit and the Anglo-American and Imperial system of units with the exponent 3 divided by the SI base unit second
Cubic Yard per Second
A year is any of the various periods equated with one passage of Earth about the Sun, and hence of roughly 365 days. The familiar calendar has a mixture of 365- and 366-day years, reflecting the fact that the time for one complete passage takes about 365¼ days; the precise value for this figure depends on the manner of defining the year.
Year
31,536,000-fold of the SI base unit second according a common year with 365 days
Common Year
31,557,600-fold of the SI base unit second according to one year with 365.25 days as physical quantity in the metrology
A sidereal year is the time taken for Sun to return to the same position with respect to the stars of the celestial sphere.
Sidereal Year
A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Because of the precession of the equinoxes, the seasonal cycle does not remain exactly synchronised with the position of the Earth in its orbit around the Sun. As a consequence, the tropical year is about 20 minutes shorter than the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars. Since antiquity, astronomers have progressively refined the definition of the tropical year, and currently define it as the time required for the mean Sun's tropical longitude (longitudinal position along the ecliptic relative to its position at the vernal equinox) to increase by 360 degrees (that is, to complete one full seasonal circuit).
Tropical Year
YoctoCoulomb
YottaCoulomb
In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z. The atomic number uniquely identifies a chemical element. In an atom of neutral charge, the atomic number is also equal to the number of electrons.
Atomic-number
length measure corresponding to the imperial unit "inch"
ZeptoCoulomb
ZettaCoulomb
Failures in Time
The QUDT, or "Quantity, Unit, Dimension and Type" SHACL Collection defines the base classes, properties, restrictions and vocabularies used for modeling physical quantities, units of measure, and their dimensions in various measurement systems. The goal of the QUDT ontology is to provide a unified model of, measurable quantities, units for measuring different kinds of quantities, the numerical values of quantities in different units of measure and the data structures and data types used to store and manipulate these objects in software. Descriptions are provided in both HTML and LaTeX formats. A quantity is a measure of an observable phenomenon, that, when associated with something, becomes a property of that thing; a particular object, event, or physical system. A quantity has meaning in the context of a measurement (i.e. the thing measured, the measured value, the accuracy of measurement, etc.) whereas the underlying quantity kind is independent of any particular measurement. Thus, length is a quantity kind while the height of a rocket is a specific quantity of length; its magnitude that may be expressed in meters, feet, inches, etc. Or, as stated at Wikipedia, in the language of measurement, quantities are quantifiable aspects of the world, such as time, distance, velocity, mass, momentum, energy, and weight, and units are used to describe their measure. Many of these quantities are related to each other by various physical laws, and as a result the units of some of the quantities can be expressed as products (or ratios) of powers of other units (e.g., momentum is mass times velocity and velocity is measured in distance divided by time).
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QUDT SHACL Collection Metadata Version 3.1.4
Quantities, Units, Dimensions and Types (QUDT) SHACL Collection - Version 3.1.4
Specifies the schema for quantities, units and dimensions. Types are defined in other schemas.
QUDT is a non-profit organization that governs the QUDT ontologies.
QUDT Quantity Kinds Vocabulary Catalog Entry v1.2
YYYY-MM-DDThh:mm:ss[.dd] or YYYY-DDDThh:mm:ss[.dd], where 'YYYY' is the year, 'MM' is the two-digit month, 'DD' is the two-digit day, 'DDD' is the three digit day of year, 'T' is constant, 'hh:mm:ss[.dd]' is the UTC time in hours, minutes, seconds, and optional fractional seconds. As many 'd' characters to the right of the period as required may be used to obtain the required precision. All fields require leading zeros.