Continuous spectrum beyond the violet end of the visible spectrum (wavelength less than 400nm), and above the X-ray wavelengths (greater than 5nm). Glass absorbs UV, so optical systems at these wavelengths have to be made of quartz. Nucleic acids absorb UV most strongly at around 260nm, and this is the wavelength most likely to cause mutational damage (by the formation of thymine dimers). It is the UV component of sunlight that causes actinic keratoses to form in skin, but that is also required for Vitamin D synthesis.
Electromagnetic waves with wavelengths around 100 to 400mm.
UltraViolet is a free, cloud-based, digital rights library that allows users of digital home entertainment content to stream and download licensed content to multiple platforms and devices. The UltraViolet ecosystem embraces a `pay once, play almost anywhere` approach that allows users to store proofs-of-purchase of media rights in...Found on http://en.wikipedia.org/wiki/UltraViolet_(system)
Electromagnetic radiation in the wavelength range of 4 to 400 nanometers.Found on http://www.encyclo.co.uk/local/21690
Electromagnetic radiation at wavelengths shorter than the violet end of visible light; the atmosphere of the Earth effectively blocks the transmission of most ultraviolet light.
Found on http://www.solarviews.com/eng/terms.htm
Light that is so blue humans cannot see it. A band of the electromagnetic spectrum between the visible and the X-ray. Photons of ultraviolet light are more energetic than photons of visible light. Found on https://www.encyclo.co.uk/local/20037
Electromagnetic radiation at wavelengths shorter than the violet end of visible light; the atmosphere of the Earth effectively blocks the transmission of most ultraviolet light.Found on http://www.encyclo.co.uk/local/20040
- having or employing wavelengths shorter than light but longer than X-rays 2. [n] - radiation lying in the ultraviolet rangeFound on http://www.webdictionary.co.uk/definition.php?query=ultraviolet
Electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays.
Found on http://www.encyclo.co.uk/local/20448
A part of the electromagnetic spectrum, with a higher frequency than blue light, but lower than X-Rays.Found on http://www.solarspace.co.uk/Glossary4.php
Ultraviolet (UV) radiation is invisible. It is a form of electromagnetic radiation, with a wavelength just shorter than that of visible violet light. UV radiation can be used to treat skin conditions like acne. Humans use UV light from the Sun to produce vitamin D3 (used in the kidneys and liver). UV light causes sun-tans, but too much can cause s...Found on http://www.users.zetnet.co.uk/computing/MainPage/SecDepts/Physics/Resources
(UVA,UVB) Ultraviolet light is light that we cannot see. But it is an important part of sunlight. Ultraviolet light is divided into UVA, UVB and UVC. UVC cannot get through the ozone layer to reach us. But UVA and UVB can both increase the risk of skin cancer, including malignant melanoma. Sunbathing and using sun beds increases your skin's exposur...Found on http://www.cancerhelp.org.uk/utilities/glossary/index.htm?search=u
That portion of the electromagnetic spectrum below blue light (380 nanometers). Found on http://www.flowmeterdirectory.com/flowmeter_technical_glossary/flowmeter_te
The invisible rays of the spectrum of light which are at its violet end. Sometimes abbreviated U.V. Found on http://www.encyclo.co.uk/local/20933
The part of the spectrum just beyond violet. Ultraviolet light is invisible to the human eye but strongly affects photographic materials. Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
<physics> Continuous spectrum beyond the violet end of the visible spectrum (wavelength less than 400nm) and above the X-ray wavelengths (greater than 5 nm). ... Glass absorbs UV, so optical systems at these wavelengths have to be of quartz. Nucleic acids absorb UV most strongly at around 260nm and this is the wavelength most likely to cause ...Found on http://www.encyclo.co.uk/local/20973
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`Found on https://www.encyclo.co.uk/local/20974
(ul″trә-vi´ә-lәt) denoting electromagnetic radiation of wavelength shorter than that of the violet end of the spectrum, having wavelengths of 4–400 nanometers. ultraviolet A(UVA) ultraviolet radiation with wavelengths between 320 and 4...Found on http://www.encyclo.co.uk/local/21001
• (a.) Lying outside the visible spectrum at its violet end; -- said of rays more refrangible than the extreme violet rays of the spectrum.Found on http://thinkexist.com/dictionary/meaning/ultraviolet/
The part of the spectrum just beyond violet. Ultraviolet light is invisible to the human eye but strongly affects photographic materialsFound on http://www.encyclo.co.uk/local/21048
see UV.Found on http://www.textilesintelligence.com/glo/index.cfm?SECTION=U
optical radiation for which the wavelengths are shorter than those for visible radiation, that is approximately between 1 nm and 400 nmFound on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-01-06
Electromagnetic radiation in the wavelength range of 4 to 400 nanometers.Found on http://www.electromn.com/glossary/u.htm
Electromagnetic radiation in the wavelength range of 4 to 400 nanometers.Found on http://www.daviddarling.info/encyclopedia/U/AE_ultraviolet.html
(UV) (or Ultraviolet Radiation)Ultraviolet radiation from the sun plays a role in the formation of the ozone layer by acting as a catalyst for a chemical reaction that breaks apart oxygen molecules which then recombine to form ozone. The absorption of UV by stratospheric ozone and atmospheric oxygen prevents very little ultraviolet radiation to rea...Found on http://www.cpc.noaa.gov/products/outreach/glossary.shtml
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