News tagged with uv radiation
Organic compounds found in proto-planetary disks
(PhysOrg.com) -- A new study from scientists in the US has reported that organic compounds could be formed in proto-planetary disks, and could have seeded the development of life in our own and other planetary ...
Mar 30, 2012 |
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Ultraviolet protection molecule in plants yields its secrets
Lying around in the sun all day is hazardous not just for humans but also for plants, which have no means of escape. Ultraviolet (UV) radiation from the sun can damage proteins and DNA inside cells, leading ...
Feb 09, 2012 |
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Glancing blow from a comet could create amino acids
(PhysOrg.com) -- Amino acids are markers for potential life since they are the building blocks of proteins. Now scientists in California have for the first time found the shock wave created when a comet has ...
Apr 01, 2010 |
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New research rejects 80-year theory of 'primordial soup' as the origin of life
For 80 years it has been accepted that early life began in a 'primordial soup' of organic molecules before evolving out of the oceans millions of years later. Today the 'soup' theory has been over turned in a pioneering paper ...
Feb 02, 2010 |
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Spray-on liquid glass is about to revolutionize almost everything
(PhysOrg.com) -- Spray-on liquid glass is transparent, non-toxic, and can protect virtually any surface against almost any damage from hazards such as water, UV radiation, dirt, heat, and bacterial infections. ...
Nanotechnology / Nanomaterials
Feb 02, 2010 |
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Ozone: Climate change boosts ultraviolet risk for high latitudes
(PhysOrg.com) -- Physicists at the University of Toronto have discovered that changes in the Earth's ozone layer due to climate change will reduce the amount of ultraviolet (UV) radiation in northern high ...
Space & Earth / Earth Sciences
Sep 06, 2009 |
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Scientists propose new hypothesis on the origin of life
The Miller-Urey experiment, conducted by chemists Stanley Miller and Harold Urey in 1953, is the classic experiment on the origin of life. It established that the early Earth atmosphere, as they pictured it, ...
Space & Earth / Earth Sciences
Sep 04, 2009 |
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New simulation shows consequences of a world without Earth's natural sunscreen (w/Video)
(PhysOrg.com) -- The year is 2065. Nearly two-thirds of Earth's ozone is gone -- not just over the poles, but everywhere. The infamous ozone hole over Antarctica, first discovered in the 1980s, is a year-round ...
Space & Earth / Earth Sciences
Mar 19, 2009 |
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Scientists elevate little-studied cellular mechanism to potential drug target
For years, science has generally considered the phosphorylation of proteins -- the insertion of a phosphorous group into a protein that turns it on or off -- as perhaps the factor regulating a range of cellular processes ...
Dec 11, 2011 |
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Mutant microbes test radiation resistance
Early Earth lacked an ozone layer to act as a shield against high-energy solar radiation, but microbes flourished by adapting to or finding other forms of protection from the higher ultraviolet radiation levels. ...
Space & Earth / Space Exploration
Mar 24, 2011 |
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In distant galaxies, new clues to century-old molecule mystery
(PhysOrg.com) -- In a study that pushes the limits of observations currently possible from Earth, a team of NASA and European scientists recorded the "fingerprints" of mystery molecules in two distant galaxies, ...
Jan 11, 2011 |
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Lack of methane to blame for planet's 'smell'
Giant planet GJ 436b in the constellation Leo is missing something. Would you believe swamp gas?
Space & Earth / Space Exploration
Sep 14, 2010 |
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Researchers: English ivy may give sunblock a makeover
When Mingjun Zhang was watching his son play in the yard, he was hit with a burning question: "What makes the ivy in his backyard cling to the fence so tightly?"
Nanotechnology / Bio & Medicine
Jul 19, 2010 |
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Research questions amphibians' UV vulnerability
(PhysOrg.com) -- New research recently conducted by two ecologists, Wendy Palen at Simon Fraser University and Daniel Schindler at the University of Washington, finds that Pacific Northwest amphibian species ...
May 23, 2010 |
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Chromosome's Guardians Susceptible to UV Radiation, Scientists Find
(PhysOrg.com) -- The molecular caps at the ends of chromosomes that protect humans against cancer and premature cellular aging show a surprising inability to protect themselves against ultraviolet radiation, ...
Apr 30, 2010 |
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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.
