@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:t12-24.1>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "12-24.1" ;
  skosxl:prefLabel "work function"@en ;
  skosxl:altLabel "phi"@en ;
  skos:definition "difference between energy (<<iso80000-5>>) of an electron at rest at infinity and the Fermi energy (<<t12-27.1>>)"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-12> ;
  isq:hasUnit [
    skos:notation "J" ;
    skosxl:prefLabel "joule"@en
  ] ;
  isq:hasUnit [
    skos:notation "eV" ;
    skosxl:prefLabel "electronvolt"@en
  ] ;
  isq:hasUnit [
    skos:notation "kg*m^2*s^(-2)" ;
    skosxl:prefLabel "kilogram square metre per second squared"@en
  ] ;
  skos:note "The term \"energy level\" is often used for the state of the electron, not only for its energy.\n\nThe contact potential difference between substances a and b is given by\n\n[stem%unnumbered]\n++++\nV_\"a\" - V_\"b\" = (phi_\"a\"-phi_\"b\")/e\n++++\n\nwhere stem:[e] is the elementary charge (<<iso80000-1>>).\n\nA set of energy levels, the energies of which occupy an interval practically continuously, is called an energy band.\n\nIn semi-conductors stem:[E_\"d\"] and stem:[E_\"a\"] are used for donors and acceptors, respectively.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-12:ed-2:en:item:12-24.1> .