Related topics: electrons , wavelength , optics express , led
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
Ultra-fast LED Flash Unit for Quality Checks
Feb 03, 2010 |
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Siemens researchers have developed the world’s fastest LED stroboscopic lamp for the purposes of quality control.
New on-off 'switch' triggers and reverses paralysis in animals with a beam of light
Feb 03, 2010 |
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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 ...
Nano for the senses
Nanotechnology / Nanomaterials
Feb 02, 2010 |
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Pin-sharp projections, light that's whiter than white, varnishes that make sounds if the temperature changes: at nano tech 2010 in Tokyo, Fraunhofer researchers present nanotechnology that is a veritable feast for the senses.
Spray-on liquid glass is about to revolutionize almost everything
Nanotechnology / Nanomaterials
Feb 02, 2010 |
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(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. ...
ARS genetic analysis helps spot sugarcane rusts
Jan 29, 2010 |
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Agricultural Research Service (ARS) scientists have analyzed rust fungi from more than 160 sugarcane samples from 25 countries to provide a valuable resource for plant breeders and pathologists who are searching for genetic ...
Prometheus: Over Easy
Space & Earth / Space Exploration
Jan 29, 2010 |
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(PhysOrg.com) -- Looking for all intents and purposes like a celestial egg after a session in Saturn's skillet, Prometheus displayed its pockmarked, irregular surface for NASA's Cassini spacecraft on Jan. ...
Astronomers discover cool stars in nearby space
Jan 29, 2010 |
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(PhysOrg.com) -- An international team, led by astronomers at the University of Hertfordshire have discovered what may be the coolest sub-stellar body ever found outside our own solar system. Using the United ...
Researchers Find New Way To Study How Enzymes Repair DNA Damage
Jan 28, 2010 |
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Researchers at Ohio State University have found a new way to study how enzymes move as they repair DNA sun damage -- and that discovery could one day lead to new therapies for healing sunburned skin.
Wireless optical transmission key to secure, safe and rapid indoor communications
Jan 27, 2010 |
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Light is better than radio waves when it comes to some wireless communications, according to Penn State engineers. Optical communications systems could provide faster, more secure communications with wider bandwidth and would ...
The fungus among us: An eco-friendly way of decomposing BPA-containing plastic
Jan 27, 2010 |
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Just as cooking helps people digest food, pretreating polycarbonate plastic — source of a huge environmental headache because of its bisphenol A (BPA) content — may be the key to disposing of the waste in ...
Stacking the deck: Single photons observed at seemingly faster-than-light speeds
Jan 26, 2010 |
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Researchers at the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology and the University of Maryland at College Park, can speed up photons (particles of light) ...
Going For Exawatts: Building the most powerful laser in the world
Jan 25, 2010 |
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Producing a laser with a power of a terawatt -- equal to one trillion watts -- used to be impressive, but now the forefront of optical research power is measured in 1 quadrillion-watt units known as petawatts. ...
The First of Many Asteroid Finds for WISE
Space & Earth / Space Exploration
Jan 25, 2010 |
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(PhysOrg.com) -- NASA's Wide-field Infrared Survey Explorer, or WISE, has spotted its first never-before-seen near-Earth asteroid, the first of hundreds it is expected to find during its mission to map the ...
How 'random' lasers work
Jan 24, 2010 |
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When University of Utah scientists discovered a new kind of laser that was generated by an electrically conducting plastic or polymer, no one could explain how it worked and some doubted it was real. Now, ...
Brain protein critical to movement, memory, and learning deciphered at the Advanced Light Source
Jan 22, 2010 |
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(PhysOrg.com) -- The structure of a protein that is sending electrical pulses between neurons in your brain as you read this article has been fully mapped for the first time using Lawrence Berkeley National ...
