Definitions for ultraviolet rays

This page provides all possible meanings and translations of the word ultraviolet rays

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  1. Ultraviolet Rays

    That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies. The longer wavelengths (near-UV or biotic or vital rays) are necessary for the endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic or extravital rays) are viricidal, bactericidal, mutagenic, and carcinogenic and are used as disinfectants.

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"ultraviolet rays." Definitions.net. STANDS4 LLC, 2015. Web. 18 Apr. 2015. <http://www.definitions.net/definition/ultraviolet rays>.

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