Assertion: ultraviolet | /r/HasProperty | divided
Facets:
value: into four regions
type: OTHER
value: traditionally
type: OTHER
value: in physics
type: OTHER
Source sentences:
text: In physics, ultraviolet radiation is traditionally divided into four regions: near (400–300 nm), middle (300–200 nm), far (200–100 nm), and extreme (below 100 nm).