@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:t7-20>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "7-20" ;
  skosxl:prefLabel "photon flux"@en ;
  skosxl:altLabel "Phi_\"p\""@en ;
  skosxl:altLabel "(Phi)"@en ;
  skos:definition "rate of photon number per time interval, expressed by\n\n[stem%unnumbered]\n++++\nPhi_\"p\" = (\"d\"N_\"p\")/(\"d\"t)\n++++\n\nwhere stem:[N_\"p\"] is photon number (e.g. given by <<t7-19.1>>), transmitted or received, and stem:[t] is time (<<iso80000-3>>)\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-7> ;
  isq:hasUnit [
    skos:notation "s^(-1)" ;
    skosxl:prefLabel "per second"@en
  ] ;
  skos:note "Photon flux stem:[Phi_\"p\"] is related to radiant flux (<<t7-4.1>>), stem:[Phi_\"e\"], of monochromatic radiation, by\n\n[stem%unnumbered]\n++++\nPhi_\"p\" = (Phi_\"e\")/(h nu)\n++++\n\nwhere stem:[h] is the Planck constant (<<iso80000-1>>), and stem:[nu] is the frequency (<<iso80000-3>>) of the corresponding electromagnetic wave.\n\nThe corresponding radiometric quantity is \"radiant flux\" (<<t7-4.1>>). The corresponding photometric quantity is \"luminous flux\" (<<t7-13>>).\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-7:ed-2:en:item:7-20> .