UNESCO Thesaurus
type: ConceptScheme
preferred label: Тезаурус ЮНЕСКО @ru
preferred label: Thésaurus de l'UNESCO @fr
preferred label: Tesauro de la UNESCO @es
has top concept: Optics

Photochemistry
type: Concept
preferred label: Фотохимия @ru
preferred label: Fotoquímica @es
preferred label: Photochimie @fr
related: Optics

Lasers
type: Concept
preferred label: Лазеры @ru
preferred label: Rayo láser @es
preferred label: Laser @fr
related: Optics

has related
sub property of: semanticRelation
definition: Relates a concept to a concept with which there is an associative semantic relationship.
comment: skos:related is disjoint with skos:broaderTransitive

Concept
type: Class

has narrower
sub property of: narrowerTransitive
definition: Relates a concept to a concept that is more specific in meaning.
comment: Narrower concepts are typically rendered as children in a concept hierarchy (tree).

preferred label
sub property of: label
definition: The preferred lexical label for a resource, in a given language.
comment: skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties.
comment: The range of skos:prefLabel is the class of RDF plain literals.
comment: A resource has no more than one value of skos:prefLabel per language tag.

Optics
type: Concept
is in scheme: UNESCO Thesaurus
narrower: Image formation
narrower: Light
is top concept in scheme: UNESCO Thesaurus
preferred label: Оптика @ru
preferred label: Óptica @es
preferred label: Optique @fr
member of: Physical sciences
related: Lasers
related: Optical instruments
related: Photochemistry
related: Optical fibres
main concept of: Physical sciences

Image formation
type: Concept
preferred label: Формирование изображения @ru
preferred label: Formación de las imágenes @es
preferred label: Formation des images @fr
broader: Optics

Light
type: Concept
preferred label: Свет @ru
preferred label: Luz @es
preferred label: Lumière @fr
broader: Optics

Optical instruments
type: Concept
preferred label: Оптические инструменты @ru
preferred label: Instrumento óptico @es
preferred label: Instrument optique @fr
related: Optics

Optical fibres
type: Concept
preferred label: Оптические волокна @ru
preferred label: Fibra óptica @es
preferred label: Fibre optique @fr
related: Optics

Physical sciences
type: ConceptGroup
label: Sciences de la physique @fr
label: Ciencias físicas @es
label: Физические науки @ru
has main concept: Optics
notation: 2.20
member: Optics

is in scheme
definition: Relates a resource (for example a concept) to a concept scheme in which it is included.

is top concept in scheme
sub property of: is in scheme
definition: Relates a concept to the concept scheme that it is a top level concept of.