@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:t7-31.6>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "7-31.6" ;
  skosxl:prefLabel "luminous transmittance"@en ;
  skosxl:altLabel "tau_\"v\""@en ;
  skos:definition "quotient of transmitted luminous flux and incident luminous flux, expressed by\n\n[stem%unnumbered]\n++++\ntau_\"v\" = (Phi_\"v,t\")/(Phi_\"v,m\")\n++++\n\nwhere stem:[Phi_\"v,t\"] is transmitted luminous flux (<<t7-13>>) and stem:[Phi_\"v,m\"] is luminous flux of the incident radiation\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-7> ;
  isq:hasUnit [
    skos:notation "1" ;
    skosxl:prefLabel "one"@en
  ] ;
  skos:note "From the spectral transmittance stem:[tau(lambda)], luminous transmittance can be calculated by\n\n[stem%unnumbered]\n++++\ntau_\"v\" = (int_0^(oo) tau(lambda) Phi_(\"e\",lambda)(lambda)V(lambda)\"d\"lambda)/(int_0^(oo) Phi_(\"e\",lambda)(lambda)V(lambda)\"d\"lambda)\n++++\n\nwhere stem:[Phi_(\"e\",lambda)(lambda)] is the spectral radiant flux (or relative spectral distribution) of the source, and stem:[V(lambda)] is the spectral luminous efficiency (<<t7-10.2>>).\n\nSee also <<t7-31.5>>.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-7:ed-2:en:item:7-31.6> .