@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:t7-1.2>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "7-1.2" ;
  skosxl:prefLabel "refractive index"@en ;
  skosxl:altLabel "n"@en ;
  skos:definition "quotient of speed of light in vacuum (<<iso80000-1>>) and speed of light in a medium (<<t7-1.1>>)"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-7> ;
  isq:hasUnit [
    skos:notation "1" ;
    skosxl:prefLabel "one"@en
  ] ;
  skos:note "The value of the refractive index can depend on the frequency, polarization, and direction.\n\nThe refractive index is expressed by stem:[n = c_0//c], where stem:[c_0] is the speed of light in vacuum and stem:[c] is the speed of light in the medium.\n\nFor a medium with absorption, the complex refractive index stem:[ul n] is defined by\n\n[stem%unnumbered]\n++++\nul n = n + \"i\"k\n++++\n\nwhere stem:[k] is spectral absorption index (<<iec60050-845>>) and stem:[\"i\"] is imaginary unit.\n\nThe refractivity is expressed by stem:[n-1], where stem:[n] is refractive index.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-7:ed-2:en:item:7-1.2> .