GLOSSARY

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | R | S | T | U | V | W

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U

UV radiation, ultraviolet radiation

The electromagnetic spectrum is divided into a number of ranges. Within the spectrum, ultraviolet radiation is very close to the visible light spectrum but has a shorter wavelength and higher energy than the visible spectrum. The higher the energy, the more destructive the radiation. See also Electromagnetic spectrum; Visible spectrum.