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- Ultraviolet
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Words related to ultraviolet
ul·tra·vi·o·let
U u -
ozone
a form of oxygen, O 3 , with a peculiar odor suggesting that of weak chlorine, produced when an electric spark or ultraviolet light is passed through air or oxygen. It is found in the atmosphere in minute quantities, especially after a thunderstorm, is a powerful oxidizing agent, and is thus biologically corrosive. In the upper atmosphere, it absorbs ultraviolet rays, thereby preventing them from reaching the surface of the earth. It is used for bleaching, sterilizing water, etc. -
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quartz lamp
a lamp consisting of an ultraviolet light source, as mercury vapor, contained in a fused-silica bulb that transmits ultraviolet light with little absorption. -
ultraviolet astronomy
the branch of astronomy that deals with celestial objects emitting electromagnetic radiation in the ultraviolet range. -
ultraviolet filter
a filter used on a lens to absorb ultraviolet radiation that may impart an undesirable blue cast to a photograph. -
actinic ray
a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects.