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
Qualcomm's next e-book to use a mirasol display
Electronics / Consumer & Gadgets
19 hours ago |
4.6 / 5 (8) |
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(PhysOrg.com) -- Qualcomm subsidiary Mirasol is developing a new e-book reader with a color display that uses ambient light. The reader will be capable of displaying video smoothly, but the new features will ...
A Tiny Cage of Gold Responds to Light, Opening to Empty Its Contents
Nanotechnology / Bio & Medicine
Nov 19, 2009 |
5 / 5 (3) |
0
(PhysOrg.com) -- Researchers at Washington University in St. Louis have developed a polymer-coated gold nanocage that not only opens in response to light to release a small amount of a drug payload, but then closes when the ...
New on-off 'switch' triggers and reverses paralysis in animals with a beam of light (w/ Video)
Nov 18, 2009 |
5 / 5 (3) |
3
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 ...
NASA's Wise Gets Ready to Survey the Whole Sky (w/ Video)
Nov 17, 2009 |
4.8 / 5 (5) |
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(PhysOrg.com) -- NASA's Wide-field Infrared Survey Explorer, or Wise, is chilled out, sporting a sunshade and getting ready to roll. NASA's newest spacecraft is scheduled to roll to the pad on Friday, Nov. ...
Ghostly 'Spokes' Puff Out From Saturn's Ring's (w/ Video)
Space & Earth / Space Exploration
Nov 16, 2009 |
4.5 / 5 (6) |
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(PhysOrg.com) -- Massive, bright clouds of tiny ice particles hover above the darkened rings of Saturn in an image captured by the Cassini spacecraft on Sept. 22, 2009, around the time of Saturn's equinox. ...
Invisibility visualized: German team unveils new software for rendering cloaked objects
Nov 13, 2009 |
4.8 / 5 (4) |
1
(PhysOrg.com) -- Scientists and curiosity seekers who want to know what a partially or completely cloaked object would look like in real life can now get their wish -- virtually. A team of researchers at the ...
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 ...
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.
Do we need dark matter?
Nov 12, 2009 |
4.2 / 5 (19) |
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It's the biggest problem in physics: the matter we can see in the universe accounts for just five per cent of the observed gravity that holds galaxies together.
Rapid star formation spotted in 'stellar nurseries' of infant galaxies
Nov 11, 2009 |
4 / 5 (5) |
1
The Universe's infant galaxies enjoyed rapid growth spurts forming stars like our sun at a rate of up to 50 stars a year, according to scientists at Durham University.
Planetary Society plans new 'solar sail'
Space & Earth / Space Exploration
Nov 09, 2009 |
4.7 / 5 (14) |
1
(AP) -- Four years after its first solar sail ended up in the ocean instead of orbit, The Planetary Society announced Monday that by the end of 2010 it will try again to launch a spacecraft that will be propelled by the ...
'Dropouts' pinpoint earliest galaxies
Nov 06, 2009 |
4.3 / 5 (11) |
15
Astronomers, conducting the broadest survey to date of galaxies from about 800 million years after the Big Bang, have found 22 early galaxies and confirmed the age of one by its characteristic hydrogen signature ...
Chocolate rich in flavanols may protect the skin from UV
Nov 06, 2009 |
5 / 5 (9) |
3
(PhysOrg.com) -- A new study has discovered for the first time that dark chocolate rich in flavanols may provide significant protection from the harmful effects of ultraviolet light.
NXP Sets New Benchmarks for LED Drivers
Nov 05, 2009 |
4 / 5 (1) |
0
NXP Semiconductors today announced three major developments in its portfolio of mains connected LED driver solutions: the success of its SSL2101 LED driver IC in matching LED lifetimes in an accelerated lifetime test; the ...
Compressing photonic signals for greater bandwidth
Nov 03, 2009 |
4.4 / 5 (5) |
3
Cornell researchers have developed an ingenious method to time-compress optical signals. The process could enable optical communication systems to carry many more bits per second or could also be used to generate ...
