@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:t3-23.1>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "3-23.1" ;
  skosxl:prefLabel "phase velocity"@en ;
  skosxl:altLabel "phase speed"@en ;
  skosxl:altLabel "c, ii(sf(v)), (v)"@en ;
  skosxl:altLabel "c_varphi, ii(sf(v))_varphi, (v_varphi)"@en ;
  skos:definition "speed with which the phase angle (<<t3-7>>) of a wave propagates in space"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-3> ;
  isq:hasUnit [
    skos:notation "m*s^-1" ;
    skosxl:prefLabel "metre per second"@en
  ] ;
  skos:note "The phase velocity is given by:\n\n[stem%unnumbered]\n++++\nc = omega/k\n++++\n\nwhere stem:[omega] denotes the angular frequency (<<t3-18>>) and stem:[k] the angular repetency (<<t3-22>>).\n\nIf phase velocities of electromagnetic waves and other phase velocities are both involved, then stem:[c] should be used for the former and stem:[v] for the latter.\n\nPhase velocity can also be written as stem:[c = lambda f].\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-3:ed-2:en:item:3-23.1> .