@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t7-10.1>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "7-10.1" ;
  skosxl:prefLabel "luminous efficiency <specified photometric condition>"@en ;
  skosxl:altLabel "V"@en ;
  skos:definition "quotient of radiant flux (<<t7-4.1>>) weighted by the spectral luminous efficiency (<<t7-10.2>>) and the corresponding radiant flux for a specified photometric condition"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-7> ;
  isq:hasUnit [
    skos:notation "1" ;
    skosxl:prefLabel "one"@en
  ] ;
  skos:note "Luminous efficiency for photopic vision is expressed by\n\n[stem%unnumbered]\n++++\nV = (int_0^(oo)Phi_(\"e\",lambda)(lambda)V(lambda)\"d\"lambda)/(int_0^(oo)Phi_(\"e\",lambda)(lambda)\"d\"lambda) = K/K_\"m\"\n++++\n\nwhere stem:[Phi_(\"e\",lambda)] is spectral radiant flux (<<t7-4.2>>), stem:[V(lambda)] is spectral luminous efficiency, stem:[lambda] is wavelength, stem:[K] is luminous efficacy of radiation (<<t7-11.1>>), and stem:[K_\"m\"] is maximum luminous efficacy (<<t7-11.3>>).\n\nFor scotopic and mesopic vision see <<cls-0.4>> and <<cls-0.5>>.\n\nSymbols for different photometric conditions:\n\nstem:[V], <for photopic vision>; stem:[V'], <for scotopic vision>; stem:[V_\"mes;m\"], <for mesopic vision>; stem:[V_(10)], <for the CIE 10&deg; photopic photometric observer>; stem:[V_\"M\"], <for the CIE 1988 modified 2&deg; spectral luminous efficiency function for photopic vision>.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-7:ed-2:en:item:7-10.1> .