@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix constant: <http://qudt.org/vocab/constant/> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix qkdv: <http://qudt.org/vocab/dimensionvector/> .
@prefix quantitykind: <http://qudt.org/vocab/quantitykind/> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix si-quantity: <https://si-digital-framework.org/quantities/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix vaem: <http://www.linkedmodel.org/schema/vaem#> .
@prefix voag: <http://voag.linkedmodel.org/schema/voag#> .

quantitykind:PhaseDifference
  a qudt:QuantityKind ;
  dcterms:description """"Phase Difference" is the difference, expressed in degrees, between two waves having
    the same frequency and referenced to the same point in time. Two oscillators that have the same frequency and different phases
    have a phase difference, and the oscillators are said to be out of phase with each other. The amount by which such oscillators
    are out of step with each other can be expressed in degrees from $0^\\circ$ to $360^\\circ$, or in radians from 0 to
    ${2\\pi}$. If the phase difference is $180^\\circ$ ($\\pi$ radians), then the two oscillators are said to be in antiphase.
  """^^qudt:LatexString ;
  qudt:applicableUnit unit:ARCMIN ;
  qudt:applicableUnit unit:ARCSEC ;
  qudt:applicableUnit unit:DEG ;
  qudt:applicableUnit unit:GON ;
  qudt:applicableUnit unit:GRAD ;
  qudt:applicableUnit unit:MIL_Angle ;
  qudt:applicableUnit unit:MIN_Angle ;
  qudt:applicableUnit unit:MicroRAD ;
  qudt:applicableUnit unit:MilliARCSEC ;
  qudt:applicableUnit unit:MilliRAD ;
  qudt:applicableUnit unit:RAD ;
  qudt:applicableUnit unit:REV ;
  qudt:expression "$phase-difference$"^^qudt:LatexString ;
  qudt:hasDimensionVector qkdv:A0E0L0I0M0H0T0D1 ;
  qudt:informativeReference "http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=103-07-06"^^xsd:anyURI ;
  qudt:informativeReference "http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=31891"^^xsd:anyURI ;
  qudt:informativeReference "https://en.wikipedia.org/wiki/Phase_(waves)#Phase_difference"^^xsd:anyURI ;
  qudt:isoNormativeReference "http://www.iso.org/iso/catalogue_detail?csnumber=43012"^^xsd:anyURI ;
  qudt:latexDefinition "$\\varphi = \\varphi_u - \\varphi_i$, where $\\varphi_u$ is the initial phase of the voltage and $\\varphi_i$ is the initial phase of the electric current."^^qudt:LatexString ;
  qudt:latexSymbol "$\\varphi$"^^qudt:LatexString ;
  qudt:specializationOf quantitykind:Angle ;
  qudt:specializationOf quantitykind:PlaneAngle ;
  qudt:wikidataMatch <http://www.wikidata.org/entity/Q78514588> ;
  rdfs:comment "Applicable units are those of quantitykind:Angle" ;
  rdfs:isDefinedBy <http://qudt.org/3.4.0/vocab/quantitykind> ;
  rdfs:label "Phase Difference"@en ;
  rdfs:label "Phasenverschiebungswinkel"@de ;
  rdfs:label "diferencia de fase"@es ;
  rdfs:label "diferença de fase"@pt ;
  rdfs:label "différence de phase"@fr ;
  rdfs:label "przesunięcie fazowe"@pl ;
  rdfs:label "sfasamento angolare"@it ;
  rdfs:label "اختلاف طور"@ar ;
  rdfs:label "位相差"@ja ;
  skos:altLabel "desfasagem"@pt ;
  skos:altLabel "déphasage"@fr ;
  skos:broader quantitykind:Angle ;
  skos:broader quantitykind:PlaneAngle .