@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://www.irandoc.acir/onto/irandoc/insp0004878>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004880>, <http://www.irandoc.acir/onto/irandoc/insp0008897>, <http://www.irandoc.acir/onto/irandoc/insp0007828>, <http://www.irandoc.acir/onto/irandoc/insp0013363>, <http://www.irandoc.acir/onto/irandoc/insp0005035>, <http://www.irandoc.acir/onto/irandoc/insp0007931>, <http://www.irandoc.acir/onto/irandoc/insp0004877> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0004918> ;
  skos:prefLabel "Gradient index optics"@en, "نورشناسی شاخص شیب"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:altLabel "selfoc optics"@en .

<http://www.irandoc.acir/onto/irandoc/insp0005035>
  skos:prefLabel "Optical element"@en, "عنصر نوری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0004918>
  skos:prefLabel "Optics"@en, "نورشناسی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0013363>
  skos:prefLabel "Refractive index"@en, "ضریب شکست"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0004880>
  skos:prefLabel "Integrated optics"@en, "نورشناسی یکپارچه"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0007828>
  skos:prefLabel "Optical fibres"@en, "الیاف نوری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0008897>
  skos:prefLabel "عدسی"@fa, "Lens"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0004877>
  skos:prefLabel "Geometrical optics"@en, "نورشناسی هندسی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .

<http://www.irandoc.acir/onto/irandoc/insp0007931>
  skos:prefLabel "Optical materials"@en, "مواد نوری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0004878> .