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ultraviolet radiation

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{adj: ultraviolet} having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end
"ultraviolet radiation"
"an ultraviolet lamp"

{n: ergosterol} a plant sterol that is converted into vitamin D by ultraviolet radiation

{n: fluorescent lamp} lamp consisting of a tube coated on the inside with a fluorescent material; mercury vapor in the tube emits ultraviolet radiation that is converted to visible radiation by the fluorescent material

{n: mercury-vapor lamp} ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapor

{n: ozone layer, ozonosphere} a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun

{n: ozone} a colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation)

{n: ultraviolet lamp, ultraviolet source} any source of illumination that emits ultraviolet radiation

{n: ultraviolet spectrum} the spectrum of ultraviolet radiation

{n: ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV} radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

{v: denature} modify (as a native protein) especially by heat, acid, alkali, or ultraviolet radiation so that all of the original properties are removed or diminished

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