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.
A region of the electromagnetic spectrum that is of higher energy and shorter wavelength than visible light. Typical wavelengths of ultraviolet radiation range from 375 nm to 12.5 nm (12.5 x 10-9 m).
electromagnetic rays beyond the violet end of the visible spectrum. The range of invisible radiation wavelengths from around 4 nanometers to 380 nanometers. Often called UV radiation and comes naturally from the sun. Divided into 3 categories based on wavelength.
The range of the electromagnetic spectrum from 10 to 400 nanometers.
An invisible spectrum with wavelengths shorter than visible light b longer than X-rays about 200 to 4000 angstrom units.
A form of electromagnetic radiation with wavelengths just shorter than visible light and just longer than x-rays. Located just below violet in the electromagnetic spectrum, ultraviolet radiation has greater energy than visible light.
The region of the spectrum between about 100 and 4000 angstroms; also used in the restricted sense of ultraviolet radiation that reaches the ground, namely, that between about 3000 and 4000 angstroms.
Invisible radiation that is part of the electromagnetic spectrum with wavelengths ranging from about 4 nanometers to about 380 nanometers. This radiation is what the sun produces.
powerful radiation, or energy, that has a wavelength shorter than light.
Radiant energy between 10 and 380 nanometers in wavelength, beyond the violet end of the visible spectrum. Typically used in ozone-producing light sources (180-220 anometers), germicidal lamps (220-300 nanometers), and "black lights" (320-400 nanometers).
That portion of the light spectrum beyond the visible violet (to humans) but both visible and highly attractive to nocturnal insects.
The invisible rays of the spectrum of light which are at its violet end. Sometimes abbreviated U.V.
invisible wavelengths of the spectrum, just beyond the color of violet
A Band of wavelengths within the electromagnetic spectrum invisible to the human eye which are shorter than the blue end of the spectrum. All films are sensitive to some ultraviolet radiation. It shows as increased haze, particularly in distant views and at high altitudes, and may give a blue cast to a photograph.
Ultraviolet radiation is a type of electromagnetic radiation whose wavelengths are shorter and more energetic that those of visible light. It is invisible and can cause damage to the eyes and skin. Defined as key term in Introduction to Biology 2.2.7 Energy from the Sun warms Earth and is radiated back into space
This is the portion of the electromagnetic spectrum with wavelengths between 4 and 3-400 nanometers (these are shorter wavelengths than with the visible light portion of the electromagnetic spectrum).
(U.V.) Invisible radiation wavelengths from about 4 nanometers, on the border of the x-ray region, to about 380 nanometers, just beyond the violet in the visible spectrum. This frequency of light is considered the culprit in color fading as well as causing skin cancer.
Ultraviolet light is light that we cannot see as it has a wave length shorter than the visible light we can see. But is an important part of sunlight. Ultraviolet light is divided into UVA, UVB and UVC. UVC has the shortest wavelength and cannot get through the ozone layer to reach us. But UVA and UVB have both been linked to skin cancer, including malignant melanoma. Both sunbathing and using sun beds increases your skin's exposure to ultraviolet light and so increases your risk of skin cancer.
Type of radiation in wavelengths shorter than those of visisble light and longer than those of x-rays
(UV):Invisible, short wavelength region of the solar spectrum, from approximately 4 to 380
shortwave radiation, invisible to the human eye, but may cause damage to humans. The UV spectrum has 3 bands UV-A, UV-B and UV-C
light electromagnetic radiation having wavelengths slightly shorter than those of visible light
light wavelengths which are shorter than the violet end of the visible spectrum and longer than the roentgen radiations. Variable expressivity - a gene whose effect varies from one person to the next.
Any radiant energy within the wavelength range 100 to 400 nanometers is considered ultraviolet radiation (1 nanometer = 1 billionth of a meter, or 1 X 10-9 m).
Radiation with ultraviolet wavelengths. Radiation of this kind is a component of sunlight and is the light that makes exposed skin become darker. EncartaÂ® World English Dictionary Â© 1999 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc. (Taylor Whitney)
UV Sanitizing Systems can be, plumbed in-line, and used to reduce the overall population micro-organisms, as the water passes through the unit. There is no residual effect of the UV, so backup sanitizing is highly recommended. UV is also used in some Ozonators (refer to the listing for Ozone), in order to convert oxygen (O) into ozone (O). Because UV rays from the Sun, can destroy chlorine or bromine, cyanuric acid conditioner/stabilizer is used to minimize the negative effect, of sunlight, on the chlorine concentration.
(UV) light - Ultraviolet is a high energy, short wavelength of light. It is shorter than violet in the visible spectrum and on the border of the x-ray region.
(Abbreviated UV.) Pertaining to or same as ultraviolet radiation.
Electromagnetic radiation at shorter wavelengths and higher energies than the violet part of visible light.
The region of the electromagnetic spectrum with wavelengths in the range of 10-9 meters to 4 x 10-7 meters. Ultraviolet photons are between X-rays and optical light in the electromagnetic spectrum.
Light waves that can only be seen under a special lamp.
(UV)- (Extreme Ultraviolet and Far Ultraviolet) Ultraviolet light (UV) is a portion of the complete electromagnetic spectrum Ultraviolet is a portion of the spectrum that is a shorter wavelength than visible light; roughly, with a wavelength interval from 100 to 4000 angstroms. Ultraviolet radiation from the Sun is responsible for many complex photochemical reactions like the formation of the ozone layer. Extreme and far ultraviolet wavelengths are different portions of the ultraviolet portion of the spectrum, with extreme being between 55.8-118 nanometers and far being between 110-190 nanometers.
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"
(UV): electromagnetic radiation resembling visible light, but of shorter wavelength. UV cannot be seen by the eye, and much of it is absorbed by ozone, a variant of oxygen, at altitudes of 30-40 km. Satellite telescopes, however, can and do view stars and the Sun in UV, and even in the extreme UV (EUV), the range between UV and X-rays.
UV Part of the electromagnetic spectrum between the visible and X-ray regions. Ultraviolet radiation is absorbed in our atmosphere so UV telescopes such as FUSE need to be placed in space.
The part of the electromagnetic spectrum whose radiation has somewhat smaller wavelengths than optical radiation, but longer wavelengths than X-rays . Because ultraviolet light is absorbed by the Earth's atmosphere, ultraviolet astronomy is performed in space. more
light with very short wave lengths, out of the visible spectrum.
Invisible rays of the light spectrum, beyond visible light, that show up in ultraviolet photographs.
electromagnetic radiation between about 190 and 350 nm.
Invisible electromagnetic radiation defined between 1,000-3,800 Angstrom.
Usually considered to be the portion of the electromagnetic spectrum between 200 nm and 400 nm.
The part of the spectrum where the wave length is shorter than that of visible light.
adj. Relating to or producing electromagnetic radiation of wavelengths from about 5 nanometers to 400 nanometers, which is beyond the violet end of the visible light spectrum. Ultraviolet radiation refers to radiation with ultraviolet wavelengths. Radiation of this kind is a component of sunlight and is the light that makes exposed skin become darker.
Radiant energy of wave lengths shorter than the wave lengths of visible light. "Ultra" means beyond; so ultraviolet rays are beyond the violet end of the spectrum; that is, beyond the range of sight.
the region of the electromagnetic spectrum that falls outside of the visible, just beyond violet. Defined in the scientific community as electromagnetic radiation between 200 and 390 nanometers in wavelength.
zone of invisible radiation beyond the violet end of the spectrum of visible radiation. Since UV wavelengths are shorter than the visible wavelengths, their photons have more energy, enough to initiate some chemical reactions and to degrade most plastic.
Water disinfection treatment method using ultraviolet light.
Ultraviolet light (also called "black light") has wavelengths of 280-400 nanometers, which is on the low end of the visible light spectrum. It can be very harmful to living organisms.
That portion of the sun's total range of radiation having wavelengths immediately shorter than the shortest of the visible spectrum (purple); between approximately 380 and 100 nm.
a wavelength of light just beyond the visible spectrum used to detect luminescence on tagged stamps and certain flaws on older stamps. There are two ends of the UV spectrum used to detect luminescence, short wave and long wave. Short wave is used to detect phosphor tagging and long wave to detect fluorescent tagging.
Ultraviolet is a range of radiation wavelengths of the electromagnetic spectrum between 5 and 400 nm, just beyond the violet in the visible light spectrum.
Lower end of the light spectrum which is invisible to the human eye and allows fluorescence to be visible in a diamond.
That part of the electromagnetic spectrum with wavelengths between 5 and 400 nanometers (nm). Along with x-rays, solar radiation in these wavelengths produces the majority of ionization in the D, E, and F regions.
Region of the electromagnetic spectrum, just outside the visible range, corresponding to wavelengths slightly shorter than blue light. [More Info
excessive radiation causing skin cancer and other eye problems Term Meaning
electromagnetic radiation beyond the violet end of the visible light spectrum. UV radiation induces tanning and sunburn of the skin, and is associated with the development of skin cancer. UV is used to kill Mycobacterium tuberculosis in hospitals.
Electromagnetic radiation that is slightly higher frequency than the blue end of the visible spectrum.
Light that is above the visible spectrum.
Electromagnetic radiation at wavelengths shorter than violet light and just beyond the visible light spectrum. Sunlight includes ultraviolet radiation, which causes tanning or sunburn in human skin and which may cause chemical or structural changes in some commercial materials. Aluminum reflects ultraviolet radiation and is not damaged by it.
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.
Electromagnetic radiation (light) with wavelengths between the violet end of the visible spectrum and the range characteristic of rays or radiation used to create roentgens (x-ray images of the body).
The invisible rays of the spectrum which are outside of the visible spectrum at its violet end. UV rays are found in everyday sunlight and can cause fading or chalking of dark paint finishes. Extreme UV exposure can cause certain plastic materials to distort. Note: On the basis of practical applications and the effect obtained, the ultraviolet region often is divided into the following wavelengths
light emitted in extremely short wave lengths, so blue that humans can't see it.
A spectrum of light with wavelengths from about four nanometers to 380 nanometers. Light below 4 nm is in the x-ray spectrum, and just above 380 nm is...
Light with a wavelength of 254 nm used to kill or inactivate pathogens like coliform bacteria and legionella. It disinfects water without adding any chemicals or creating any new compounds, nor does it change the taste or odor of water.
electromagnetic radiation of shorter wavelength than visible light. UV cannot be seen by the eye, and much of it is absorbed by ozone, a molecule of oxygen, at altitudes of 30-40 km above the Earth. Satellite telescopes, however, can and do view stars, galaxies, and the Sun in UV.
A range of electromagnetic waves in the non-visible spectrum, with wavelengths from 10 to 400 nm (shorter than visible light).
(U.V.) Invisible rays of the spectrum of light.
Situated beyond the visible spectrum, just beyond the violet end, having wavelengths shorter than wavelengths of visible light and longer than those of X-rays.
Pertaining to ultraviolet light.
ultraviolet (UV) illumination is used as a scientific aid in the examination of paintings. Because different painting materials exhibit characteristic fluorescence colors when exposed to ultraviolet light, UV illumination can be used to identify areas of retouching and to determine different types of varnish.
That portion of the electromagnetic spectrum below blue light (380 nanometers).
Pertaining to the region of the electromagnetic spectrum from approximately 10 to 380 nm. The term ultraviolet without further qualification usually refers to the region from 200 to 380 nm.
The region of the electromagnetic spectrum adjacent to the visible spectrum, but of higher frequency (shorter wavelength) than blue ranging from 200 to 400 nm. UV A ranges from 320 to 400 nm while UV B falls between 280 and 320 nm.
Invisible rays that are part of the energy that comes from the sun. UV radiation can burn the skin and cause melanoma and other types of skin cancer. UV radiation that reaches the earth's surface is made up of two types of rays, called UVA and UVB rays. UVB rays are more likely than UVA rays to cause sunburn, but UVA rays pass further into the skin. Scientists have long thought that UVB radiation can cause melanoma and other types of skin cancer. They now think that UVA radiation also may add to skin damage that can lead to cancer. For this reason, skin specialists recommend that people use sunscreens that block or absorb both kinds of UV radiation.
The invisible part of the light spectrum whose rays have wavelengths shorter than the violet end of the visible spectrum and longer than X rays. UVA and UVB light are harmful to your eyes and skin.
invisible light with wavelengths shorter than violet
invisible light rays emitted by the sun that are just beyond the visible spectrum.
Electromagnetic waves invisible to the human eye, with wavelengths about 100 nm - 400 nm. Considered too short to be visible to the human eye. 350 nm - 400 nm is considered soft-UV (see Light).
Light rays that are outside the visible spectrum at its violet end.These rays have a chemical effect upon the dried film of finishing materials. Ultraviolet light is commonly used in curing finishes at the factory for prefinished flooring. Ultraviolet light also causes woods to lighten or darken. See Color Change.
The invisible part of the light spectrum with wavelengths between 250 to 400 nanometers.
Electromagnetic radiation of shorter wavelength than visible radiation but longer than x-rays (approximately 0.03 to 0.4 microns)
Of or pertaining to the range of radiation wavelengths from about 4000 angstroms (just beyond the violet in the visible spectrum) to about 40 angstroms (on the border of the x-ray region).
The invisible region of the spectrum just beyond the violet end of the visible region. Wavelengths range from 1 to 400 nm.
Radiation having wave lengths just shorter than those of visible light. Ultraviolet rays represent 2/3 of the rays that cause fading.
Of or relating to the range of invisible radiation wavelengths from about 4 nanometers, on the border of the x-ray region, to about 380 nanometers, just beyond the violet in the visible spectrum.
The portion of the electromagnetic spectrum with wavelengths less than 400 nm (beyond human vision).
1. The invisible rays of the spectrum at the violet end. 2. Invisible radiation waves with frequencies shorter than wave lengths of visible light and longer than X-ray.
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.
Electromagnetic waves with wavelengths around 100 to 400nm.
The part of the electromagnetic spectrum whose radiation has frequencies somewhat greater, and wavelengths somewhat less, than those of visible light.
Electromagnetic radiation in the wavelength range of 4 to 400 nanometers.
Electromagnetic radiation that has a wavelength shorter than visible light and longer than x-rays. Although it accounts for only 4 to 5 percent of the total energy of insolation, it is responsible for many complex photochemical reactions, such as fluorescence and the formation of ozone.
A part of the electromagnetic spectrum, with a higher frequency than blue light, but lower than X-Rays.
The part of the spectrum just beyond violet. Ultraviolet light is invisible to the human eye but strongly affects photographic materials.
"Ultraviolet (Light My Way)" (also spelled "Ultra Violet (Light My Way)") is the tenth track from U2's 1991 album, Achtung Baby.