@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#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix constant: <http://qudt.org/vocab/constant/> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix qkdv: <http://qudt.org/vocab/dimensionvector/> .
@prefix quantitykind: <http://qudt.org/vocab/quantitykind/> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix si-quantity: <https://si-digital-framework.org/quantities/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix vaem: <http://www.linkedmodel.org/schema/vaem#> .
@prefix voag: <http://voag.linkedmodel.org/schema/voag#> .

quantitykind:LuminousFluxPerArea
  a qudt:QuantityKind ;
  dcterms:description "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."^^qudt:LatexString ;
  qudt:applicableUnit unit:FC ;
  qudt:applicableUnit unit:LUX ;
  qudt:applicableUnit unit:PHOT ;
  qudt:hasDimensionVector qkdv:A0E0L-2I1M0H0T0D0 ;
  qudt:informativeReference "https://en.wikipedia.org/wiki/Illuminance"^^xsd:anyURI ;
  rdfs:comment "Applicable units are those of quantitykind:LuminousFluxPerArea" ;
  rdfs:isDefinedBy <http://qudt.org/3.2.1/vocab/quantitykind> ;
  rdfs:label "Luminous Flux per Area"@en .