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
Obama to unveil dramatic new auto emissions standards
May 19, 2009 |
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A new front in the battle against climate change will open Tuesday, when President Barack Obama unveils sweeping new auto regulations described as equivalent to taking 177 million cars off the road.
Chinese scientists create metamaterial black hole
Oct 16, 2009 |
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(PhysOrg.com) -- Two physicists in China have used metamaterials to create the first artificial electromagnetic black hole. The scientists, Qiang Cheng and Tie Jun Cui from the Southeast University in Nanjing, ...
Rotating Space Elevator Propels its Own Load
May 21, 2009 |
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(PhysOrg.com) -- The idea of the space elevator just got a little crazier. While the “traditional” concept involved using rocket propulsion or laser light pressure to propel loads up a cable anchored to Earth, ...
Gamma-ray photon race ends in dead heat; Einstein wins this round
Oct 28, 2009 |
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Racing across the universe for the last 7.3 billion years, two gamma-ray photons arrived at NASA's orbiting Fermi Gamma-ray Space Telescope within nine-tenths of a second of one another. The dead-heat finish ...
Discovery brings new type of fast computers closer to reality
Sep 27, 2009 |
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Physicists at UC San Diego have successfully created speedy integrated circuits with particles called "excitons" that operate at commercially cold temperatures, bringing the possibility of a new type of extremely ...
Intel's Light Peak Will Replace Copper Wires
Sep 24, 2009 |
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(PhysOrg.com) -- At the Intel Developer Forum in San Francisco Wednesday, the company announced a new optical cable that will be able to transfer data, between electrical devices, starting at speeds of 10 ...
In Twin Paradox Twist, the Accelerated Twin is Older
Jun 09, 2009 |
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Just when you thought you were beginning to understand the twin paradox (maybe), scientists have found something new to ponder. In the original version of the famous thought experiment on time dilation, one ...
Astronomers explore 'last blank space' on map of the Universe
Oct 28, 2009 |
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(PhysOrg.com) -- The most distant object ever discovered is described in this week's edition of the science journal Nature. Two international teams of astronomers report their observations of a gamma-ray burst ...
We have a 'right to starlight,' astronomers say
Aug 15, 2009 |
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The public's "right to starlight" is steadily being eroded by urban illumination that is the bane of astronomers everywhere, the International Astronomical Union said on Friday.
Super-thin flexible OLED from Sony
Electronics / Consumer & Gadgets
Oct 07, 2009 |
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(PhysOrg.com) -- Sony is showing off prototypes incorporating its super-thin, flexible OLED technology at the CREATEC JAPAN 2009 IT and electronics trade show in Makuhari Messe (Chiba) in Japan.
LHC now colder than deep space
Oct 20, 2009 |
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(PhysOrg.com) -- The LHC (Large Hadron Collider) is once again colder than deep space as it is prepared for experiments to resume in late November.
Scientists Discover Light Force with 'Push' Power
Jul 13, 2009 |
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(PhysOrg.com) -- A team of Yale University researchers has discovered a "repulsive" light force that can be used to control components on silicon microchips, meaning future nanodevices could be controlled ...
Scientists create metal that pumps liquid uphill
Jun 02, 2009 |
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(PhysOrg.com) -- In nature, trees pull vast amounts of water from their roots up to their leaves hundreds of feet above the ground through capillary action, but now scientists at the University of Rochester ...
New 'broadband' cloaking technology simple to manufacture
May 20, 2009 |
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(PhysOrg.com) -- Researchers have created a new type of invisibility cloak that is simpler than previous designs and works for all colors of the visible spectrum, making it possible to cloak larger objects ...
New nanolaser -- spaser -- key to future optical computers and technologies
Aug 16, 2009 |
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(PhysOrg.com) -- Because the new device, called a "spaser," is the first of its kind to emit visible light, it represents a critical component for possible future technologies based on "nanophotonic" circuitry, ...
