ultraviolet radiation lamp

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• ultraviolet radiation — Portion of the electromagnetic spectrum extending from the violet end of visible light to the X ray region. Ultraviolet (UV) radiation lies between wavelengths of about 400 nanometres and 10 nanometres, corresponding to frequencies of… …   Universalium

• Ultraviolet — UV redirects here. For other uses, see UV (disambiguation). UVB redirects here. For the mysterious shortwave radio station in Russia, see UVB 76. For other uses, see Ultraviolet (disambiguation). False color image of the Sun s corona as seen in… …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• ultraviolet lamp — noun any source of illumination that emits ultraviolet radiation • Syn: ↑ultraviolet source • Hypernyms: ↑source of illumination • Hyponyms: ↑mercury vapor lamp …   Useful english dictionary

• ultraviolet source — noun any source of illumination that emits ultraviolet radiation • Syn: ↑ultraviolet lamp • Hypernyms: ↑source of illumination • Hyponyms: ↑mercury vapor lamp …   Useful english dictionary

• ultraviolet — ul•tra•vi•o•let [[t]ˌʌl trəˈvaɪ ə lɪt[/t]] adj. 1) phs pertaining to electromagnetic radiation having wavelengths in the range of approximately 5–400 nm, shorter than visible light but longer than x rays 2) phs pertaining to, producing, or using… …   From formal English to slang

• ultraviolet phototherapy — the use of ultraviolet radiation (which may be type A, B, or C, or a combination of types) to treat skin diseases; the radiation is usually generated by an artificial source such as an arc lamp. Photochemotherapy is a variant in which… …   Medical dictionary

• ultraviolet — /ul treuh vuy euh lit/, adj. 1. beyond the violet in the spectrum, corresponding to light having wavelengths shorter than 4000 angstrom units. 2. pertaining to, producing, or utilizing light having such wavelengths: an ultraviolet lamp. Cf.… …   Universalium

• Ultraviolet germicidal irradiation — (UVGI) is a sterilization method that uses ultraviolet (UV) light at sufficiently short wavelength to break down micro organisms. [National Institute for Occupational Safety and Health. (2008, April). NIOSH eNews, 5(12). Retrieved September 10,… …   Wikipedia

• low pressure mercury arc lamp — an ultraviolet radiation lamp having a low vapor pressure, low amperage, high voltage, and a glow discharge; more than 95 per cent of its emission is ultraviolet C in the mercury vapor resonance emission line at 254 nm. In the treatment of skin… …   Medical dictionary

• high pressure mercury arc lamp — an ultraviolet radiation lamp having a high vapor pressure with high intensity light because of linear spectral emissions in many wavelength ranges; used as a source of ultraviolet B for treating dermatologic disorders. See also Goeckerman… …   Medical dictionary