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Longman Dictionary of Contemporary English
ultraviolet/infra-red radiation (=from the light produced by the sun)
▪ Ultraviolet radiation damages DNA in plants.
▪ The amplified products were electrophoresed through a 1.5% agarose gel stained with ethidium bromide and viewed under ultraviolet light.
▪ If a mutant strain appears that eschews recombination, it proves to be especially susceptible to damage by ultraviolet light.
▪ Melanin producing cells in our bodies are activated by ultraviolet light from the sun and can have a protective effect.
▪ Fastaged beef is held at about 70-F for two days at high humidity levels; ultraviolet light is used to control spoilage.
▪ Right, the same flower as seen by a bee, photographed in ultraviolet light.
▪ Other experts suggested the use of high-frequency sound waves or ultraviolet light.
▪ Strictly speaking the extreme ultraviolet light does not come from a laser, but it does retain the coherence of the original.
▪ Such gases, mixed with water vapour, were subjected to electrical discharge and ultraviolet light.
▪ But because ultraviolet radiation is a constant feature of solar radiation, the ozone layer is maintained.
▪ If ozone deterioration persisted, they warned, solar ultraviolet radiation would flood Earth.
▪ The satellite, called Astron, is intended to study ultraviolet radiation and X-rays from celestial objects.
▪ Large areas, including the United States, continue to get increasingly harmful ultraviolet radiation.
▪ However, ultraviolet radiation must also have aided evolution.
▪ The thermal tide may also be responsible for dim ultraviolet radiation observed to come from the middle of the night hemisphere.
▪ The economic consequences for food crops and other plants of the resulting increase in ultraviolet radiation have received less attention.
▪ So ultraviolet radiation from the Sun would have been felt more powerfully then, than now.
▪ High up in the sky was a protective layer of gas that screened out dangerous ultraviolet rays from the sun.
▪ It allows an insomniac who can not get exposure to sunlight to still benefit from the regulating effects of ultraviolet rays.
▪ They help deplete the ozone layer, allowing ultraviolet rays to cause deadly skin cancers.
▪ If ozone deterioration persisted, they warned, solar ultraviolet radiation would flood Earth.
▪ It will investigate the shorter-wavelength radiation from the objects observed by the ultraviolet telescope.
▪ Large areas, including the United States, continue to get increasingly harmful ultraviolet radiation.
▪ More water has been destroyed by ultraviolet sunlight, torn apart into oxygen and hydrogen.
▪ Since 1989 I have measured the ozone layer, solar ultraviolet and the clarity of the air over South-Central Texas.
▪ The amplified products were electrophoresed through a 1.5% agarose gel stained with ethidium bromide and viewed under ultraviolet light.
▪ The extreme ultraviolet power was only a few watts, but it was adequate to detect molecular hydrogen.
▪ The thermal tide may also be responsible for dim ultraviolet radiation observed to come from the middle of the night hemisphere.
The Collaborative International Dictionary

Ultraviolet \Ul`tra*vi"o*let\, a. [Pref. ultra- + violet.] (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.

Douglas Harper's Etymology Dictionary

"beyond the violet end of the visible spectrum," 1840, from ultra- + violet. Ultra-red (1870) was a former name for what now is called infra-red.


a. of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 nanometre - 10 nanometre n. Ultraviolet colour.


adj. 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"


n. radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays [syn: ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV]

Ultraviolet (TV serial)

Ultraviolet is a 1998 United Kingdom television series written and directed by Joe Ahearne and starring Jack Davenport, Susannah Harker, Idris Elba and Philip Quast. The music was composed and performed by Sue Hewitt. The programme was produced by World Productions for Channel 4.

Ultraviolet (disambiguation)

Ultraviolet refers to electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft X-rays.

Ultraviolet or UltraViolet may also refer to:

UltraViolet (organization)

UltraViolet is a women's advocacy group based in the United States. The group conducts online campaigns using social media to highlight women's issues such as violence against women, maternity leave, equal pay, and reproductive rights.


Ultraviolet (UV) is an electromagnetic radiation with a wavelength from 10 nm (30 PHz) to 380 nm (750 THz), shorter than that of visible light but longer than X-rays. UV radiation is present in sunlight. It is also produced by electric arcs and specialized lights such as mercury-vapor lamps, tanning lamps, and black lights. Although lacking the energy to ionize atoms, long-wavelength ultraviolet radiation can cause chemical reactions and causes many substances to glow or fluoresce. Consequently, biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules.

Suntan, freckling and sunburn are familiar effects of over-exposure, along with higher risk of skin cancer. Living things on dry land would be severely damaged by ultraviolet radiation from the Sun if most of it were not filtered out by the Earth's atmosphere. More-energetic, shorter-wavelength "extreme" UV below 121 nm ionizes air so strongly that it is absorbed before it reaches the ground. Ultraviolet is also responsible for the formation of bone-strengthening vitamin D in most land vertebrates, including humans. The UV spectrum thus has effects both beneficial and harmful to human health.

Near-UV light is visible to some insects, mammals, and birds. Small birds have a fourth color receptor for ultraviolet light; this gives birds "true" UV vision. Reindeer use near-UV light to see polar bears, who are poorly visible in regular light because they blend in with the snow. UV light also allows mammals to see urine trails, which is helpful for prey animals to find food in the wild. The males and females of some butterfly species look identical to the human eye but very different to UV-sensitive eyes—the males sport bright patterns in order to attract the females Most ultraviolet rays are invisible to most humans: the lens on a human eye ordinarily filters out UVB frequencies or lower, and humans lack color receptor adaptations for ultraviolet light, so humans don’t see many of the "light or colours" certain animals see.

Under some conditions, children and young adults can see ultraviolet down to wavelengths of about 310 nm, and people with aphakia (missing lens) or replacement lens can also see some UV wavelengths. People who don't have lenses often report seeing ultraviolet light that looks "whitish blue" or "whitish violet". This happens because our three color receptors ( red, green and blue) are all sensitive to ultraviolet light, so the light comes in as a mixture of the three receptors, with a slight nod to blue side of the spectrum.

Ultraviolet (film)

Ultraviolet is a 2006 American dystopian science fiction action thriller film written and directed by Kurt Wimmer and produced by Screen Gems. It stars Milla Jovovich as Violet Song, Cameron Bright as Six, and Nick Chinlund as Ferdinand Daxus. It was released in North America on March 3, 2006. The film was released on DVD and Blu-ray Disc on June 27, 2006.

The film follows Violet Song Jat Shariff (Jovovich), a woman infected with hemoglophagia, a fictional vampire-like disease, in a future dystopia where anyone infected with the contagious disease is immediately sentenced to death. With her advanced martial arts, a group of rebel hemophages, and a boy named Six (Bright), whose blood may contain a cure for the disease, Violet goes on a mission to overthrow the futuristic government and defeat Ferdinand Daxus (Chinlund).

A novelization of the film was written by Yvonne Navarro, with more back-story and character development. The book differs from the film in a number of ways, including a more ambiguous ending and the removal of some of the more improbable plot twists. An anime series titled Ultraviolet: Code 044 was released by the Japanese anime satellite television network Animax, and created by Madhouse. Because of its many similarities with Equilibrium and because they share the same director, the film is often considered to be Equilibrium's spiritual successor.

Ultraviolet (novel)

Ultraviolet is a novelization of the science fiction film of the same name. It was adapted by Yvonne Navarro from the screenplay written by Kurt Wimmer. The novelization provides more backstory that the film was not able to accomplish. The novel is also based on the original screenplay by Kurt Wimmer before Sony heavily edited it.

Ultraviolet (Kid Sister album)

Ultraviolet is the debut studio album by American rapper and singer Kid Sister, released on November 17, 2009 by Universal Republic Records. It was initially to be titled Dream Date but was changed during the recording process, along with the removal of three tracks and addition of five new ones. DJ A-Trak serves as the executive producer and the album includes production by XXXChange, Sinden, DJ Gant-Man, Hervé, Yuksek, and others.

Ultraviolet (Kylesa album)

Ultraviolet is the sixth full-length studio album by American sludge metal group, Kylesa. It is also the group's third album to be released through Season of Mist.

Ultraviolet (restaurant)

Ultraviolet by Paul Pairet is a single-table restaurant in Shanghai, China, opened in May 2012 by French chef Paul Pairet and the VOL Group.

In 2013 and 2014, Ultraviolet was ranked the eighth best restaurant in Asia by Asia’s 50 Best Restaurants list; in 2013 the 60th and in 2014 the 58th best restaurant in the world. In 2015, Ultraviolet has been ranked No. 3 in Asia's 50 Best Restaurants, and No. 24 in The World's 50 Best Restaurants.

It is also the first restaurant from China entering Les Grandes Tables du Monde starting from October 2014.

Ultraviolet (Light My Way)

"Ultraviolet (Light My Way)" is a song by the rock band U2 and the tenth track from their 1991 album Achtung Baby. Ostensibly about love and dependency, the song also lends itself to religious interpretations, with listeners finding allusions to the Book of Job and writers finding spiritual meaning in its invocation of the light spectrum.

The song's composition and recording incorporate both serious and throwaway elements, in keeping with the rest of Achtung Baby. While not released as a single, the song has appeared in two films and a U2 business venture was named after it. "Ultraviolet" played a featured role during the encores of the group's 1992–1993 Zoo TV and 2009–2011 U2 360° Tours.

Ultraviolet (All About Eve album)

Ultraviolet is the fourth and final studio album by All About Eve. It was the only album that the band released with MCA. Despite quite positive reviews at the time this album was not commercially successful, reaching only #36 on the UK charts. The two singles only reached, respectively, #38 and #57 in the UK singles charts. As a consequence of this, the band were dropped by MCA shortly afterwards.

"Outshine the Sun" was frequently used at the band's gigs for a finale. "Some Finer Day" was the last single released by the band for twelve years, " Let Me Go Home" being the next one in 2004.

UltraViolet (system)

UltraViolet is a cloud-based digital rights locker for movies and television shows that allows consumers to store proofs-of-purchase of licensed content in an account to enable playback on different devices using multiple applications from several different streaming services. UltraViolet also allows users to share access to their library with up to five additional people. UltraViolet is deployed by the Digital Entertainment Content Ecosystem, an alliance of 85 companies that includes film studios, retailers, consumer electronics manufacturers, cable TV companies, ISPs, network hosting vendors, and other Internet systems and security vendors, with the notable exceptions of Disney, Google, and Apple.

Ultraviolet (EP)

Ultraviolet is the fourth extended play by American electronica project Owl City, released digitally on June 27, 2014, through Republic Records. The EP's lead single, "Beautiful Times", which features violinist Lindsey Stirling, was released on April 8, 2014.

Ultraviolet (Sadistik album)

Ultraviolet is the third studio album by American rapper Sadistik. It was released on Fake Four Inc. in 2014.

The late Eyedea is featured on "Chemical Burns". The album also features guest appearances from Nacho Picasso, Sticky Fingaz, and Tech N9ne. Production is handled by Sxmplelife, Eric G, Maulskull, and Kid Called Computer. The title of the album derives from a book about color spectrums.

Music videos were made for "Cult Leader", "1984", and "Orange".

Ultraviolet (Fred V & Grafix song)

"Ultraviolet" is a single by English drum and bass record production duo Fred V & Grafix. It was released on 18 March 2016 as the lead single from their second studio album, Oxygen (2016). "Ultraviolet" features vocals from Bristol-based singer-songwriter Chelsea Watts. The B-side track "Comb Funk" features vocal samples from singer Shannon Teresa. Both tracks have been played on BBC Radio 1 and 1Xtra by British DJs MistaJam and Friction.

Usage examples of "ultraviolet".

Against the vibrant, ultraviolet background of the nutritive culture, the aggregation of Thiobacillus glowed brilliantly from their treatment with the acridine orange stain.

Perhaps the solar ultraviolet light could be absorbed by an atmospheric layer of pulverized asteroidal or surface debris injected in carefully titrated amounts above the CFCs.

She preferred the faster and more stable ethidium bromide, even though you needed an ultraviolet trans illuminator to make it fluoresce.

Ultraviolet gives us hereditary mutation and the euchromatin contains the genes that transmit heredity.

Their greatest pleasure was to sit along a girder and open their amplified senses to the depths of space, watching stars past the limits of ultraviolet and infrared, or staring into the flocculate crawling plaque of the surface of the sun, or just sitting and soaking in watts of solar energy through their skins while they listened with wired ears to the warbling of Van Allen belts and the musical tick of pulsars.

We accelerated the reaction on the ninhydrin test with heat and humidification and ran it under the ultraviolet.

One possible explanation: Freshly fallen snows of nitrogen, methane, and other hydrocarbons are irradiated by solar ultraviolet light and by electrons trapped in the magnetic field of Neptune, through which Triton plows.

Exposed to increased irradiation, the reproductive cells of many plankton species, up to six times more susceptible to destruction by ultraviolet light, were gradually being destroyed.

In short order he set up a binocular microscope, a polariscope, and an ultraviolet light on the low coffee table in front of the couch.

But they took her aboard, drenching her with stinging antiseptics, scorching her skin with bactericidal ultraviolet rays.

Anything potent enough to put on such a show could well blow away the magnetosphere, the magnetic zone high above the Earth that normally protects us from ultraviolet rays and other cosmic assaults.

Finding a small ultraviolet penlight, she slipped it in the pocket of her sweater and hurried back up the hallway toward the open doors of the Salle des Etats.

The ionizing ultraviolet that spurred their development and provides them energy also photodissociates them, and they play a game of Scylla and Charbydis with their environment.

Cameras, infrared and ultraviolet spectrometers, and an instrument called a photopolarimeter are on a scan platform that swivels on command so these device can be aimed at a target world.

With waves and tides and hot rocks and solar evaporation to concentrate the amino acids and proteinoids found in the seas and to turn them into the precursors of life, with lightning and heat and radiation and ultraviolet light to turn simple molecules into more complex ones, with the physics and chemistry of the universe itself to produce the necessary elements and simple compounds in appropriate amounts, it may even be said that life on Earth was inevitable, that it had to appear as soon as a microsphere was formed with just the right bit of nucleic acid within itself.