Ultraviolet Rays
Synonyms
Actinic Ray
Actinic Rays
Black Light, Ultraviolet
Black Lights, Ultraviolet
Light, UV
Light, Ultraviolet
Ray, Actinic
Ray, Ultra-Violet
Ray, Ultraviolet
Rays, Actinic
Rays, Ultra-Violet
Rays, Ultraviolet
UV Light
Ultra Violet Rays
Ultra-Violet Ray
Ultra-Violet Rays
Ultraviolet Black Light
Ultraviolet Black Lights
Ultraviolet Light
Ultraviolet Ray
That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies. The longer wavelengths (near-UV or biotic or vital rays) are necessary for the endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic or extravital rays) are viricidal, bactericidal, mutagenic, and carcinogenic and are used as disinfectants.