ULTRAVIOLET • E-FREE TRANSLATION.COM • Definition of Ultraviolet

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adjective

Ultraviolet adj. (Physics) Lying outside the visible spectrum at its blue-violet end; said of light more refrangible (i. e. having a shorter wavelength) than the extreme violet rays of the visible spectrum. Electromagnetic radiation with wavelengths shorter than those of ultrviolet light are not usually considered as light waves, but are classified differently. The ultraviolet region of the electromagnetic spectrum is generally considered as comprising those electromagnetic emissions with wavelengths lying between those of visible light and those of X-rays, i. e. between 4000 Angstroms and 100 Angstroms.

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Etymology of 'Ultraviolet'

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Collaborative International Dictionary of English 0.48

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"Ultraviolet" Quotes from Famous Books

... to parts of the ordinary spectrum, well known in themselves, which we have purposely left out of our study so far. These are the regions of the ultra-violet and the infra-red, invisible in themselves, but forming part of the spectrum as a whole. The ultraviolet manifests through chemical effects, the infra-red through thermal effects. We have left them out of our considerations because these regions of the spectrum differ from the visible part not only quantitatively, as present-day science believes, but qualitatively also, and in a fundamental way. ...

— Man or Matter • Ernst Lehrs

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Words linked to "Ultraviolet" : ultraviolet light, UV, ultraviolet spectrum, ultraviolet source, sunray, sun-ray, ultraviolet illumination