News tagged with ultraviolet radiation
Transparent aluminium is 'new state of matter'
(PhysOrg.com) -- Oxford scientists have created a transparent form of aluminium by bombarding the metal with the world’s most powerful soft X-ray laser. 'Transparent aluminium' previously only existed in science ...
Jul 27, 2009 |
4.3 / 5 (107) |
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Scientists Reproduce a Building Block of Life in Laboratory
(PhysOrg.com) -- NASA scientists studying the origin of life have reproduced uracil, a key component of our hereditary material, in the laboratory.
Nov 06, 2009 |
4.9 / 5 (28) |
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Hubble snaps sharp image of cosmic concoction (w/ Video)
(PhysOrg.com) -- A colourful star-forming region is featured in this stunning new NASA/ESA Hubble Space Telescope image of NGC 2467. Looking like a roiling cauldron of some exotic cosmic brew, huge clouds ...
Jul 13, 2010 |
4.6 / 5 (19) |
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New Hubble Maps of Pluto Show Surface Changes (w/ Video)
(PhysOrg.com) -- NASA today released the most detailed set of images ever taken of the distant dwarf planet Pluto. The images taken by NASA's Hubble Space Telescope show an icy and dark molasses-colored, mottled ...
Feb 04, 2010 |
4.9 / 5 (16) |
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New stars from old gas surprise astronomers
(PhysOrg.com) -- Evidence of star birth within a cloud of primordial gas has given astronomers a glimpse of a previously unknown mode of galaxy formation. The cloud, known as the Leo Ring, appears to lack ...
Feb 18, 2009 |
4.5 / 5 (17) |
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Discovery of New Microorganisms in the Stratosphere
(PhysOrg.com) -- Three new species of bacteria, which are not found on Earth and which are highly resistant to ultra-violet radiation, have been discovered in the upper stratosphere by Indian scientists. One ...
Mar 18, 2009 |
4.7 / 5 (15) |
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Asteroid strike into ocean could deplete ozone layer
(PhysOrg.com) -- Scientists in Texas say if a medium-sized asteroid were to crash into the ocean the ozone layer could be depleted, allowing high levels of ultraviolet radiation to reach the surface.
Space & Earth / Space Exploration
Oct 27, 2010 |
4.1 / 5 (17) |
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Asteroid Caught Marching Across Tadpole Nebula
(PhysOrg.com) -- A new infrared image from NASA's Wide-field Infrared Survey Explorer, or WISE, showcases the Tadpole nebula, a star-forming hub in the Auriga constellation about 12,000 light-years from Earth. ...
May 13, 2010 |
4.6 / 5 (14) |
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Climatic effects of a solar minimum
An abrupt cooling in Europe together with an increase in humidity and particularly in windiness coincided with a sustained reduction in solar activity 2800 years ago. Scientists from the German Research Centre for Geosciences ...
Space & Earth / Earth Sciences
May 06, 2012 |
4.5 / 5 (13) |
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The Explosive Disintegration of a Young Stellar System in Orion
(PhysOrg.com) -- The Orion Nebula is one of the most beautiful sights of the winter night sky, its gas and dust glowing from the intense ultraviolet radiation of a cluster of massive young stars.
Oct 23, 2009 |
4.8 / 5 (12) |
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Recipe for water: Just add starlight
ESA's (European Space Agency) Herschel infrared space observatory has discovered that ultraviolet starlight is a key ingredient for making water in the atmosphere of some stars. It is the only explanation ...
Sep 01, 2010 |
4.8 / 5 (12) |
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Study: Tanning beds definitely cause cancer
(AP) -- International cancer experts have moved tanning beds and ultraviolet radiation into the top cancer risk category, deeming both to be as deadly as arsenic and mustard gas. For years, scientists have ...
Jul 28, 2009 |
4.7 / 5 (12) |
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Cilia revolution: Man-made, hair-like structures poised to change industry paradigms
University of Southern Mississippi scientists recently imitated Mother Nature by developing, for the first time, a new, skinny-molecule-based material that resembles cilia, the tiny, hair-like structures through ...
Sep 23, 2010 |
4.9 / 5 (11) |
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Hubble to receive high-tech James Webb Space Telescope technology
Scientists and engineers now creating new technologies for NASA's James Webb Space Telescope, have realized they can be used to enhance the Hubble's Advanced Camera for Surveys (ACS) in the upcoming servicing ...
Space & Earth / Space Exploration
May 08, 2009 |
4.8 / 5 (11) |
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The Sun's Sneaky Variability
Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. ...
Space & Earth / Space Exploration
Oct 28, 2009 |
4.8 / 5 (11) |
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Ultraviolet
Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than x-rays, in the range 10 nm to 400 nm, and 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.
UV light is found in sunlight and is emitted by electric arcs and specialized lights such as black lights. As an ionizing radiation it can cause chemical reactions, and causes many substances to glow or fluoresce. Most people are aware of the effects of UV through the painful condition of sunburn, but the UV spectrum has many other effects, both beneficial and damaging, on human health.
For more information about Ultraviolet, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
