`constant:FineStructureConstant`

http://qudt.org/vocab/constant/FineStructureConstant

Predicate	Object
`rdf:type`	`qudt:PhysicalConstant`
`dcterms:description`	The \(\textit{Fine-structure Constant}\) is a fundamental physical constant, namely the coupling constant characterizing the strength of the electromagnetic interaction.
`qudt:applicableUnit`	`unit:UNITLESS`
`qudt:dbpediaMatch`	http://dbpedia.org/resource/Fine-structure_constant
`qudt:hasQuantityKind`	`quantitykind:DimensionlessRatio`
`qudt:informativeReference`	http://en.wikipedia.org/wiki/Fine-structure_constant http://physics.nist.gov/cuu/Constants/bibliography.html
`qudt:isoNormativeReference`	http://www.iso.org/iso/catalogue_detail?csnumber=31895
`qudt:latexDefinition`	\(a = \frac{e^2}{4\pi\varepsilon_0\hbar c_0}\), 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.
`qudt:latexSymbol`	\(a\)
`qudt:normativeReference`	http://www.iso.org/iso/catalogue_detail?csnumber=31895
`qudt:quantityValue`	`constant:Value_FineStructureConstant`
`rdfs:isDefinedBy`	http://qudt.org/3.1.11/vocab/constant
`rdfs:label`	“Fine-Structure Constant”@en

Generated 2026-02-23T17:47:08.149-05:00