@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:t7-11.4>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "7-11.4" ;
  skosxl:prefLabel "luminous efficacy of a source"@en ;
  skosxl:altLabel "eta_\"v\""@en ;
  skosxl:altLabel "(eta)"@en ;
  skos:definition "quotient of the luminous flux emitted and the power consumed by the source, expressed by\n\n[stem%unnumbered]\n++++\neta_\"v\" = (Phi_\"v\")/P\n++++\n\nwhere stem:[Phi_\"v\"] is luminous flux (<<t7-13>>) and stem:[P] is the power (<<iso80000-4>>) consumed by the source\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-7> ;
  isq:hasUnit [
    skos:notation "lm/W" ;
    skosxl:prefLabel "lumen per watt"@en
  ] ;
  isq:hasUnit [
    skos:notation "cd*sr*kg^(-1)*m^(-2)*s^3" ;
    skosxl:prefLabel "candela steradian second cubed per kilogram square metre"@en
  ] ;
  iso:urn <urn:iso:std:iso:80000:-7:ed-2:en:item:7-11.4> .