EARTh - Environmental Applications Reference Thesaurus

ultraviolet

ultraviolet
The energy range just beyond the violet end of the visible spectrum. Although ultraviolet radiation makes up only about 5 percent of all energy from the sun, it is the major energy source for the stratosphere and mesosphere, playing an important role in both energy balance and chemical composition. Most ultraviolet radiation is blocked by Earth's atmosphere, but some solar ultraviolet makes it through and aids in plant photosynthesis and helps produce vitamin D in humans. Too much ultraviolet radiation can burn the skin, cause skin cancer and cataracts, and damage vegetation.
Date of creation
07-Mar-2013
Accepted term
07-Mar-2013
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