@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:t8-12>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "8-12" ;
  skosxl:prefLabel "characteristic impedance of a medium for longitudinal waves"@en ;
  skosxl:altLabel "Z_\"c\""@en ;
  skos:definition "quotient of sound pressure (<<t8-2.2>>) and the component of the sound particle velocity (<<t8-4>>) in the direction of the wave propagation"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-8> ;
  isq:hasUnit [
    skos:notation "Pa*s/m" ;
    skosxl:prefLabel "pascal second per metre"@en
  ] ;
  isq:hasUnit [
    skos:notation "kg*m^(-2)*s^(-1)" ;
    skosxl:prefLabel "kilogram per square metre second"@en
  ] ;
  skos:note "The definition is limited to a progressive plane wave in a non-dissipative homogenous gas or fluid.\n\nCharacteristic impedance is a property of the medium and is equal to stem:[rho c] where stem:[rho] is the time-averaged density (<<iso80000-4>>) of the medium and stem:[c] the phase speed of sound (<<iso80000-3>>).\n\nLongitudinal waves are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-8:ed-1:en:item:8-12> .