qudt:Quantity

URI: http://qudt.org/schema/qudt/Quantity

Type

Description

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.

Properties

qudt:dbpediaMatch

sh:property

rdfs:subClassOf

rdf:type

Annotations

rdfs:comment

A quantity is distinguished from a "quantity kind" in that the former carries a value and the latter is a type specifier.

rdfs:isDefinedBy

rdfs:label

View as: CSV

Work in progress

RDF/XML

<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:j.0="http://qudt.org/schema/qudt/"
    xmlns:owl="http://www.w3.org/2002/07/owl#"
    xmlns:j.1="http://www.w3.org/ns/shacl#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="http://qudt.org/schema/qudt/Quantity">
    <j.1:property rdf:resource="http://qudt.org/schema/qudt/Quantity-quantityValue"/>
    <rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
    <rdfs:comment rdf:datatype="http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML">&lt;p class="lm-para"&gt;A &lt;b&gt;quantity&lt;/b&gt; 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 &lt;b&gt;quantity kind&lt;/b&gt; 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. &lt;/p&gt;
&lt;p class="lm-para"&gt;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.&lt;/p&gt; 
&lt;p class="lm-para"&gt;Many &lt;b&gt;quantity kinds&lt;/b&gt; 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.&lt;/p&gt;
&lt;p class="lm-para"&gt;A quantity is distinguished from a "quantity kind" in that the former carries a value and the latter is a type specifier.&lt;/p&gt;</rdfs:comment>
    <rdfs:subClassOf rdf:resource="http://qudt.org/schema/qudt/Concept"/>
    <j.0:dbpediaMatch rdf:datatype="http://www.w3.org/2001/XMLSchema#anyURI">http://dbpedia.org/resource/Quantity</j.0:dbpediaMatch>
    <j.1:property rdf:resource="http://qudt.org/schema/qudt/Quantity-hasQuantityKind"/>
    <rdfs:label>Quantity</rdfs:label>
    <rdfs:isDefinedBy rdf:resource="http://qudt.org/2.1/schema/shacl/qudt"/>
    <rdf:type rdf:resource="http://www.w3.org/ns/shacl#NodeShape"/>
    <j.1:property rdf:resource="http://qudt.org/schema/qudt/Quantity-isDeltaQuantity"/>
    <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#Class"/>
    <rdfs:subClassOf rdf:nodeID="A0"/>
    <rdfs:subClassOf rdf:resource="http://qudt.org/schema/qudt/Quantifiable"/>
    <rdfs:subClassOf rdf:nodeID="A1"/>
    <rdfs:subClassOf rdf:nodeID="A2"/>
    <rdfs:subClassOf rdf:nodeID="A3"/>
    <rdfs:isDefinedBy rdf:resource="http://qudt.org/2.1/schema/qudt"/>
  </rdf:Description>
</rdf:RDF>

TURTLE

@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://qudt.org/schema/qudt/Quantity>
  rdf:type rdfs:Class ;
  rdf:type owl:Class ;
  rdf:type <http://www.w3.org/ns/shacl#NodeShape> ;
  <http://qudt.org/schema/qudt/dbpediaMatch> "http://dbpedia.org/resource/Quantity"^^xsd:anyURI ;
  rdfs:comment """<p class=\"lm-para\">A <b>quantity</b> 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 <b>quantity kind</b> 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. </p>
<p class=\"lm-para\">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.</p> 
<p class=\"lm-para\">Many <b>quantity kinds</b> 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.</p>
<p class=\"lm-para\">A quantity is distinguished from a \"quantity kind\" in that the former carries a value and the latter is a type specifier.</p>"""^^rdf:HTML ;
  rdfs:isDefinedBy <http://qudt.org/2.1/schema/qudt> ;
  rdfs:isDefinedBy <http://qudt.org/2.1/schema/shacl/qudt> ;
  rdfs:label "Quantity" ;
  rdfs:subClassOf <http://qudt.org/schema/qudt/Concept> ;
  rdfs:subClassOf <http://qudt.org/schema/qudt/Quantifiable> ;
  rdfs:subClassOf [] ;
  rdfs:subClassOf [] ;
  rdfs:subClassOf [] ;
  rdfs:subClassOf [] ;
  <http://www.w3.org/ns/shacl#property> <http://qudt.org/schema/qudt/Quantity-hasQuantityKind> ;
  <http://www.w3.org/ns/shacl#property> <http://qudt.org/schema/qudt/Quantity-isDeltaQuantity> ;
  <http://www.w3.org/ns/shacl#property> <http://qudt.org/schema/qudt/Quantity-quantityValue> ;
.

JSON

{"resource":"Quantity" 
 ,"qname":"qudt:Quantity" 
 ,"uri":"http:\/\/qudt.org\/schema\/qudt\/Quantity" 
 ,"properties":["comment":"&lt;p class=\"lm-para\"&gt;A &lt;b&gt;quantity&lt;\/b&gt; is the measurement of an observable property of a particular object, event, or physical system. \n  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 \n  underlying &lt;b&gt;quantity kind&lt;\/b&gt; is independent of any particular measurement. Thus, length is a quantity kind while the height of a rocket is a specific \n  quantity of length; its magnitude that may be expressed in meters, feet, inches, etc. Examples of physical quantities include physical constants, such as \n  the speed of light in a vacuum, Planck's constant, the electric permittivity of free space, and the fine structure constant. &lt;\/p&gt;\n&lt;p class=\"lm-para\"&gt;In other words, quantities are quantifiable aspects of the world, such as the duration of a movie, the distance between two points, \nvelocity of a car, the pressure of the atmosphere, and a person's weight; and units are used to describe their numerical measure.&lt;\/p&gt; \n&lt;p class=\"lm-para\"&gt;Many &lt;b&gt;quantity kinds&lt;\/b&gt; are related to each other by various physical laws, and as a result, the associated units of some quantity \nkinds 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 \ndivided by time). In this way, some quantities can be calculated from other measured quantities using their associations to the quantity kinds in these \nexpressions. These quantity kind relationships are also discussed in dimensional analysis. Those that cannot be so expressed can be regarded \nas \"fundamental\" in this sense.&lt;\/p&gt;\n&lt;p class=\"lm-para\"&gt;A quantity is distinguished from a \"quantity kind\" in that the former carries a value and the latter is a type specifier.&lt;\/p&gt;" 
    ,"dbpedia match":"http:\/\/dbpedia.org\/resource\/Quantity" 
    ,"isDefinedBy":"&lt;http:\/\/qudt.org\/2.1\/schema\/qudt&gt;" 
    ,"isDefinedBy":"&lt;http:\/\/qudt.org\/2.1\/schema\/shacl\/qudt&gt;" 
    ,"label":"Quantity" 
    ,"property":"qudt:Quantity-hasQuantityKind" 
    ,"property":"qudt:Quantity-isDeltaQuantity" 
    ,"property":"qudt:Quantity-quantityValue" 
    ,"subClassOf":null 
    ,"subClassOf":null 
    ,"subClassOf":null 
    ,"subClassOf":null 
    ,"subClassOf":"qudt:Concept" 
    ,"subClassOf":"qudt:Quantifiable" 
    ,"type":"rdfs:Class" 
    ,"type":"owl:Class" 
    ,"type":"sh:NodeShape" 
    ]}

JSON-LD

{
  "@id" : "http://qudt.org/schema/qudt/Quantity",
  "@type" : [ "rdfs:Class", "http://www.w3.org/ns/shacl#NodeShape", "owl:Class" ],
  "dbpediaMatch" : "http://dbpedia.org/resource/Quantity",
  "comment" : "<p class=\"lm-para\">A <b>quantity</b> is the measurement of an observable property of a particular object, event, or physical system. \n  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 \n  underlying <b>quantity kind</b> is independent of any particular measurement. Thus, length is a quantity kind while the height of a rocket is a specific \n  quantity of length; its magnitude that may be expressed in meters, feet, inches, etc. Examples of physical quantities include physical constants, such as \n  the speed of light in a vacuum, Planck's constant, the electric permittivity of free space, and the fine structure constant. </p>\n<p class=\"lm-para\">In other words, quantities are quantifiable aspects of the world, such as the duration of a movie, the distance between two points, \nvelocity of a car, the pressure of the atmosphere, and a person's weight; and units are used to describe their numerical measure.</p> \n<p class=\"lm-para\">Many <b>quantity kinds</b> are related to each other by various physical laws, and as a result, the associated units of some quantity \nkinds 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 \ndivided by time). In this way, some quantities can be calculated from other measured quantities using their associations to the quantity kinds in these \nexpressions. These quantity kind relationships are also discussed in dimensional analysis. Those that cannot be so expressed can be regarded \nas \"fundamental\" in this sense.</p>\n<p class=\"lm-para\">A quantity is distinguished from a \"quantity kind\" in that the former carries a value and the latter is a type specifier.</p>",
  "isDefinedBy" : [ "http://qudt.org/2.1/schema/shacl/qudt", "http://qudt.org/2.1/schema/qudt" ],
  "label" : "Quantity",
  "subClassOf" : [ "http://qudt.org/schema/qudt/Concept", "_:b0", "http://qudt.org/schema/qudt/Quantifiable", "_:b1", "_:b2", "_:b3" ],
  "property" : [ "http://qudt.org/schema/qudt/Quantity-quantityValue", "http://qudt.org/schema/qudt/Quantity-hasQuantityKind", "http://qudt.org/schema/qudt/Quantity-isDeltaQuantity" ],
  "@context" : {
    "property" : {
      "@id" : "http://www.w3.org/ns/shacl#property",
      "@type" : "@id"
    },
    "comment" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#comment",
      "@type" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML"
    },
    "subClassOf" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#subClassOf",
      "@type" : "@id"
    },
    "dbpediaMatch" : {
      "@id" : "http://qudt.org/schema/qudt/dbpediaMatch",
      "@type" : "http://www.w3.org/2001/XMLSchema#anyURI"
    },
    "label" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#label"
    },
    "isDefinedBy" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#isDefinedBy",
      "@type" : "@id"
    },
    "rdf" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "owl" : "http://www.w3.org/2002/07/owl#",
    "xsd" : "http://www.w3.org/2001/XMLSchema#",
    "rdfs" : "http://www.w3.org/2000/01/rdf-schema#"
  }
}

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