Definitions for ultravioletˌʌl trəˈvaɪ ə lɪt
This page provides all possible meanings and translations of the word ultraviolet
Random House Webster's College Dictionary
ul•tra•vi•o•letˌʌl trəˈvaɪ ə lɪt(adj.)
pertaining to electromagnetic radiation having wavelengths in the range of approximately 5–400 nm, shorter than visible light but longer than x-rays.
pertaining to, producing, or using light having such wavelengths: an ultraviolet lamp.
Ref: Compare infrared. 2
Origin of ultraviolet:
ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV(adj)
radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end
"ultraviolet radiation"; "an ultraviolet lamp"
of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 nanometre - 10 nanometre
lying outside the visible spectrum at its violet end; -- said of rays more refrangible than the extreme violet rays of the spectrum
Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays, that is, in the range between 400 nm and 10 nm, corresponding to photon energies from 3 eV to 124 eV. It is so-named because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet. These frequencies are invisible to humans, but visible to a number of insects and birds. UV light is found in sunlight and is emitted by electric arcs and specialized lights such as mercury lamps and black lights. It can cause chemical reactions, and causes many substances to glow or fluoresce. A large fraction of UV, including all that reaches the surface of the Earth, is classified as non-ionizing radiation. The higher energies of the ultraviolet spectrum from wavelengths about 10 nm to 120 nm are ionizing, but due to this effect, these wavelengths are absorbed by nitrogen and even more strongly by dioxygen, and thus have an extremely short path length through air. However, the entire spectrum of ultraviolet radiation has some of the biological features of ionizing radiation, in doing far more damage to many molecules in biological systems than is accounted for by simple heating effects. These properties derive from the ultraviolet photon's power to alter chemical bonds in molecules, even without having enough energy to ionize atoms.
Translations for ultraviolet
Kernerman English Multilingual Dictionary
(of light) consisting of rays from the invisible part of the spectrum beyond the purple, that have an effect on the skin, eg causing suntan.
- فَوْق البَنَفْسَجيArabic
- ultravioletaPortuguese (BR)
- das UltraviolettGerman
- ultrafioletowy, nadfioletowyPolish
- دبنفش نه اخوا (ماورابنفشPashto
- 紫外線的Chinese (Trad.)
- بالائے بنفشي، روشنيUrdu
- thuộc tia tử ngoạiVietnamese
- 紫外线的Chinese (Simp.)
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