@prefix isq: .
@prefix smart: .
@prefix rdf: .
@prefix dcterms: .
@prefix skos: .
a isq:Entry ;
rdf:type isq:Quantity ;
rdf:type smart:TermEntry ;
dcterms:identifier "7-12" ;
skosxl:prefLabel "luminous energy"@en ;
skosxl:altLabel "DEPRECATED: quantity of light"@en ;
skosxl:altLabel "Q_\"v\""@en ;
skosxl:altLabel "(Q)"@en ;
skos:definition "energy of electromagnetic waves weighted by the spectral luminous efficiency (<>) multiplied by maximum luminous efficacy (<>) of a specified photometric condition"@en ;
smart:hasBindingnessType "bindingness-type:normative" ;
dcterms:isPartOf ;
isq:hasUnit [
skos:notation "lm*s" ;
skosxl:prefLabel "lumen second"@en
] ;
isq:hasUnit [
skos:notation "cd*sr*s" ;
skosxl:prefLabel "candela steradian second"@en
] ;
skos:note "Luminous energy for photopic vision is expressed by\n\n[stem%unnumbered]\n++++\nQ_\"v\" = K_\"m\" int_0^(oo) Q_(\"e\",lambda)(lambda)V(lambda)\"d\"lambda\n++++\n\nwhere stem:[Q_(\"e\",lambda)(lambda)] is the spectral radiant energy (<>) at wavelength stem:[lambda] (<>), stem:[V(lambda)] is spectral luminous efficiency (<>), and stem:[K_\"m\"] is maximum luminous efficacy (<>).\n\nLuminous energy can be emitted, transferred or received.\n\nLuminous energy can be expressed by the time integral of the luminous flux (<>), stem:[Phi_\"v\"], over a given duration (<>), stem:[Delta t]\n\n[stem%unnumbered]\n++++\nQ_\"v\" = int_(Delta t) Phi_\"v\" \"d\"t\n++++\n\nThe corresponding radiometric quantity is \"radiant energy\" (<>). The corresponding quantity for photons is \"photon energy\" (<>).\n"@en ;
iso:urn .