optical property
preferred label: ویژگی نوری @fa
type: Concept
narrower: photochromism

photochromism
alternative label: photodarkening
related: photochemistry
related: colour
broader: optical property
preferred label: نوررنگی @fa
type: Concept

photochemistry
preferred label: نورشیمی @fa
type: Concept
related: photochromism

colour
preferred label: رنگ (فام) @fa
type: Concept
related: photochromism