ljus, ljushet
type: Concept
preferred label: valoisuus @fi
preferred label: brightness @en
related: mörker

dygnsrytm
type: Concept
preferred label: circadian rhythm @en
preferred label: vuorokausirytmi @fi
related: mörker

inre egenskaper
type: Concept
narrower: mörker
preferred label: internal qualities @en
preferred label: sisäiset ominaisuudet @fi

ljus
type: Concept
preferred label: light @en
preferred label: valo @fi
related: mörker

mörker
type: Concept
broader generic: inre egenskaper
broader generic: fysikaliska fenomen
broader: inre egenskaper
broader: fysikaliska fenomen
in scheme: conceptscheme
preferred label: pimeys @fi
preferred label: darkness @en
related: ljus, ljushet
related: ljus
related: belysning
related: dygnsrytm

fysikaliska fenomen
type: Concept
narrower: mörker
preferred label: physical phenomena @en
preferred label: fysikaaliset ilmiöt @fi

belysning
type: Concept
preferred label: lighting, illumination @en
preferred label: valaistus @fi
related: mörker