Light
hideLight is electromagnetic radiation, particularly radiation of a wavelength that is visible to the human eye (about 400–700 nm, or perhaps 380–750 nm.) In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not.
Three primary properties of light are:
Light, which exists in tiny "packets" called photons, exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.
For more information about Light, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with light source
First Pump-Probe Experiment at Linac Coherent Light Source Completed
Nov 30, 2009 |
4.7 / 5 (12) |
0
(PhysOrg.com) -- The first experiment using the Linac Coherent Light Source to illuminate molecules via a "pump-probe" technique has been completed by an international team of more than 30 scientists from ...
Search results for light source
'Safety valve' protects photosynthesis from too much light
Nov 25, 2009 |
4.7 / 5 (3) |
0
Photosynthetic organisms need to cope with a wide range of light intensities, which can change over timescales of seconds to minutes. Too much light can damage the photosynthetic machinery and cause cell death. Scientists ...
New on-off 'switch' triggers and reverses paralysis in animals with a beam of light (w/ Video)
Nov 18, 2009 |
4.8 / 5 (5) |
4
In an advance with overtones of Star Trek phasers and other sci-fi ray guns, scientists in Canada are reporting development of an internal on-off "switch" that paralyzes animals when exposed to a beam of ultraviolet ...
Pushing light beyond its known limits
Nov 12, 2009 |
3.9 / 5 (18) |
6
Scientists at the University of Adelaide have made a breakthrough that could change the world's thinking on what light is capable of.
Merkel cells revealed as secret behind sensation of light touch
Dec 08, 2009 |
5 / 5 (1) |
0
Scientists have proved experimentally what has been suspected since the discovery of Merkel cells in the skin over a century ago: the sense of light touch that is critical for hand dexterity would not be possible without ...
Blushing dusty nebula
Dec 01, 2009 |
4.5 / 5 (2) |
1
On Earth, we tend to find dust nothing more than a nuisance that blankets our furniture and causes us to sneeze. Cosmic dust can also be a hindrance to astronomers because cameras using visible light cannot ...
Tapering a Free-Electron Laser to Extract More Juice
Nov 20, 2009 |
4 / 5 (1) |
0
(PhysOrg.com) -- Researchers from the NSLS and Science Applications International Corporation (SAIC) have demonstrated a technique that could be used to significantly improve the quantity and quality of light ...
A light touch: Iron complexes as efficient catalysts for the light-driven extraction of hydrogen from water
Dec 02, 2009 |
5 / 5 (4) |
3
(PhysOrg.com) -- Hydrogen is a promising alternative energy carrier that can be efficiently converted into electrical energy in fuel cells. One hurdle to the introduction of sustainable hydrogen technology is the fact that ...
Galaxy Collision Switches on Black Hole
Dec 10, 2009 |
4.5 / 5 (4) |
1
(PhysOrg.com) -- This composite image of data from three different telescopes shows an ongoing collision between two galaxies, NGC 6872 and IC 4970.
Fermi sees brightest-ever blazar flare
Dec 09, 2009 |
4.4 / 5 (10) |
3
(PhysOrg.com) -- A galaxy located billions of light-years away is commanding the attention of NASA's Fermi Gamma-ray Space Telescope and astronomers around the globe. Thanks to a series of flares that began ...
New nano color sorters from Molecular Foundry
Nov 12, 2009 |
4.3 / 5 (4) |
0
Berkeley Lab researchers have engineered a new class of bowtie-shaped devices that capture, filter and steer light at the nanoscale. These "nano-colorsorter" devices act as antennae to focus and sort light ...
List of search results for light source
