@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:t10-11>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-11" ;
  skosxl:prefLabel "total angular momentum"@en ;
  skosxl:altLabel "bb(ii(J))"@en ;
  skos:definition "vector (<<iso80000-2>>) quantity in a quantum system composed of the vectorial sum of angular momentum stem:[bb(ii(L))] (<<iso80000-4>>) and spin stem:[bb(ii(s))] (<<t10-10>>)"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "J*s" ;
    skosxl:prefLabel "joule second"@en
  ] ;
  isq:hasUnit [
    skos:notation "eV*s" ;
    skosxl:prefLabel "electronvolt second"@en
  ] ;
  isq:hasUnit [
    skos:notation "kg*m^2*s^(-1)" ;
    skosxl:prefLabel "kilogram square metre per second"@en
  ] ;
  skos:note "In atomic and nuclear physics, orbital angular momentum is usually denoted by stem:[bb(ii(l))] or stem:[bb(ii(L))].\n\nThe magnitude of stem:[bb(ii(J))] is quantized so that:\n\n[stem%unnumbered]\n++++\nbb(ii(J))^2 = \"P{hbar}\"^2 j(j+1)\n++++\n\nwhere stem:[j] is the total angular momentum quantum number (<<t10-13.6>>).\n\nTotal angular momentum and magnetic dipole moment have the same direction.\n\nstem:[j] is not the magnitude of the total angular momentum stem:[bb(ii(J))] but its projection onto the quantization axis, divided by stem:[\"P{hbar}\"].\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-11> .
