@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:t6-4>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "6-4" ;
  skosxl:prefLabel "surface density of electric charge"@en ;
  skosxl:altLabel "areic electric charge"@en ;
  skosxl:altLabel "areic charge"@en ;
  skosxl:altLabel "sigma"@en ;
  skos:definition "scalar quantity representing the areal distribution of electric charge,\n\n[stem%unnumbered]\n++++\nsigma = sigma(r) = (\"d\"Q)/(\"d\"A)\n++++\n\nwhere stem:[\"d\"Q] is a quasi-infinitesimal (see <<iec60050-121,locality:item=\"121-11-06\">>) electric charge (<<t6-2.1>>) contained in a quasi-infinitesimal 2D domain located at position stem:[r], and stem:[\"d\"A] is a quasi-infinitesimal area (<<iso80000-3>>) of this domain\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-6> ;
  isq:hasUnit [
    skos:notation "C/m^2" ;
    skosxl:prefLabel "coulomb per square metre"@en
  ] ;
  isq:hasUnit [
    skos:notation "m^-2*s*A" ;
    skosxl:prefLabel "per square metre second ampere"@en
  ] ;
  skos:note "See <<iec60050-121,locality:item=\"121-11-08\">>."@en ;
  iso:urn <urn:iec:std:iec:80000-6:2022-11:::6-4> .