Light

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Light 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

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New nanocrystals show potential for cheap lasers, new lighting

New nanocrystals show potential for cheap lasers, new lighting

Nanotechnology / Nanophysics

created May 10, 2009 | popularity 4.8 / 5 (28) | comments 4

For more than a decade, scientists have been frustrated in their attempts to create continuously emitting light sources from individual molecules because of an optical quirk called "blinking," but now scientists ...


Discovery of an Unexpected Boost for Solar Water-Splitting Cells

Discovery of an Unexpected Boost for Solar Water-Splitting Cells

Nanotechnology / Nanomaterials

created Apr 22, 2009 | popularity 5 / 5 (22) | comments 1

(PhysOrg.com) -- A research team from Northeastern University and the National Institute of Standards and Technology has discovered, serendipitously, that a residue of a process used to build arrays of titania ...


Improving our ability to peek inside molecules

Improving our ability to peek inside molecules

Physics / General Physics

created Sep 16, 2008 | popularity 4.8 / 5 (12) | comments 1

(PhysOrg.com) -- It's not easy to see a single molecule inside a living cell. Nevertheless, researchers at Lawrence Livermore National Laboratory are helping to develop a new technique that will enable them ...


Free Electron Lasers and You: An LCLS Primer

Free Electron Lasers and You: An LCLS Primer

Physics / General Physics

created Dec 05, 2008 | popularity 4 / 5 (14) | comments 9

(PhysOrg.com) -- In a few short months, the Linac Coherent Light Source will start operation as the world's first hard X-ray free electron laser, pushing SLAC National Accelerator Laboratory to the frontier ...


First Pump-Probe Experiment at LCLS Completed

First Pump-Probe Experiment at Linac Coherent Light Source Completed

Physics / General Physics

created Nov 30, 2009 | popularity 4.7 / 5 (12) | comments 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 ...


Jet-propelled imaging for an ultrafast light source

Jet-propelled imaging for an ultrafast light source

Physics / General Physics

created Jul 29, 2009 | popularity 4.9 / 5 (11) | comments 1

John Spence, a physicist at Arizona State University, is a longtime user of the Advanced Light Source at Lawrence Berkeley National Laboratory, where he has contributed to major advances in lensless imaging. ...


First Test of New X-ray Laser Strips Neon Bare

First Test of New X-ray Laser Strips Neon Bare

Physics / General Physics

created Sep 18, 2009 | popularity 4.5 / 5 (10) | comments 2

(PhysOrg.com) -- It takes a lot of energy to strip all ten electrons from an atom of neon. Doing it from the inside out, knocking away the most-closely-held, innermost electrons first, is an even rarer feat. ...


Science begins at the world's most powerful X-ray laser

Science Begins at the World's Most Powerful X-ray Laser (w/ Video)

Physics / General Physics

created Nov 02, 2009 | popularity 4.4 / 5 (9) | comments 2

(PhysOrg.com) -- The first experiments are now underway using the world's most powerful X-ray laser, the Linac Coherent Light Source, located at the Department of Energy's SLAC National Accelerator Laboratory. ...


Laser technology creates new forms of metal and enhances aircraft performance

Laser technology creates new forms of metal and enhances aircraft performance

Nanotechnology / Nanomaterials

created Jul 15, 2009 | popularity 4.3 / 5 (9) | comments 6

AFOSR-funded researchers at the University of Rochester are using laser light technology that will help the military create new forms of metal that may guide, attract and repel liquids and cool small electronic ...


Getting to the Heart of Stents

Getting to the Heart of Stents

Nanotechnology / Bio & Medicine

created Dec 09, 2008 | popularity 4.4 / 5 (7) | comments 0

(PhysOrg.com) -- Using the Canadian Light Source, a team of researchers from Quebec’s Laval University and Australia’s La Trobe University has discovered how to improve the nanometers-thick layer of polymer ...


Major step toward less energy loss in new electromagnetic materials

Major step toward less energy loss in new electromagnetic materials

Physics / Condensed Matter

created Mar 03, 2009 | popularity 4.8 / 5 (5) | comments 2

(PhysOrg.com) -- Researchers at Uppsala University have managed for the first time to measure magnetic properties in new materials quantitatively with the help of electron microscopy - with unparalleled precision. ...


A Kinoform's Best Friend: Diamond Refractive Lenses for Nanofocusing

A Kinoform's Best Friend: Diamond Refractive Lenses for Nanofocusing

Nanotechnology / Nanophysics

created Aug 03, 2009 | popularity 4.8 / 5 (4) | comments 2

(PhysOrg.com) -- A team of Brookhaven and Argonne National Laboratory researchers has demonstrated a reliable path for sculpting an intricate x-ray focusing lens out of diamond. Their technique, which was ...


Vise Squad: Putting the Squeeze on a Crystal Leads to Novel Electronics

Vise Squad: Putting the Squeeze on a Crystal Leads to Novel Electronics

Nanotechnology / Nanophysics

created May 06, 2009 | popularity 3.5 / 5 (4) | comments 0

(PhysOrg.com) -- A clever materials science technique that uses a silicon crystal as a sort of nanoscale vise to squeeze another crystal into a more useful shape may launch a new class of electronic devices ...


Scientists Shed 'Light' on Semiconductor Quandry

Scientists Shed 'Light' on Semiconductor Quandry

Technology / Semiconductors

created Jul 14, 2009 | popularity 4.3 / 5 (3) | comments 2

(PhysOrg.com) -- UC San Diego scientists are using laser plasma-produced light sources to explore performance improvements of critical inspection tools for the semiconductor industry, which ultimately will ...


First images from medical beamline at Canadian Light Source

First images from medical beamline at Canadian Light Source

Medicine & Health / Research

created Dec 23, 2008 | popularity 5 / 5 (2) | comments 0

A University of Saskatchewan (U of S)-led research team at the Canadian Light Source (CLS) synchrotron has received an early Christmas present. After several years of research, construction and testing, the ...