| Predicate | Object |
|---|---|
rdf:type |
qudt:QuantityKind |
dcterms:description |
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. |
qudt:expression |
\(B_{\nu}(T)\) |
qudt:hasDimensionVector |
qkdv:A0E0L2I0M1H0T-2D0 |
qudt:informativeReference |
|
qudt:isoNormativeReference |
http://www.iso.org/iso/catalogue_detail?csnumber=31890 |
qudt:latexDefinition |
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. |
qudt:wikidataMatch |
http://www.wikidata.org/entity/Q76364998 |
rdfs:isDefinedBy |
http://qudt.org/3.1.10/vocab/quantitykind |
rdfs:label |
“Planck Function”@en |
rdfs:seeAlso |