@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:t7-28.2>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "7-28.2" ;
  skosxl:prefLabel "chromaticity coordinates in the CIE 1964 standard colorimetric system"@en ;
  skosxl:altLabel "x_(10), y_(10), z_(10)"@en ;
  skos:definition "coordinates expressing the quotients of each of a set of three tristimulus values for the CIE 1964 standard colorimetric observer (<<t7-26.2>>) and their sum, expressed by\n\n[stem%unnumbered]\n++++\nx_(10) = X_(10) // (X_(10) + Y_(10) + Z_(10)),\n++++\n\n[stem%unnumbered]\n++++\ny_(10) = Y_(10) // (X_(10) + Y_(10) + Z_(10)),\n++++\n\n[stem%unnumbered]\n++++\nz_(10) = Z_(10) // (X_(10) + Y_(10) + Z_(10))\n++++\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-7> ;
  isq:hasUnit [
    skos:notation "1" ;
    skosxl:prefLabel "one"@en
  ] ;
  skos:note "Since stem:[x_(10) + y_(10) + z_(10) = 1], two variables are sufficient to express chromaticity."@en ;
  iso:urn <urn:iso:std:iso:80000:-7:ed-2:en:item:7-28.2> .