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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Part 1: From Linacs to Lasers: Accelerators and Light Sources of Tomorrow

Accelerators and Light Sources of Tomorrow (Part 1: From Linacs to Lasers)

Physics / General Physics

created Dec 22, 2009 | popularity 4.7 / 5 (6) | comments 2

From their humble beginnings as offshoots of the ordinary electric light bulb, particle accelerators have evolved in surprising directions. Among the most productive and promising developments have been light ...


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 ...


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. ...


LCLS: The World's Largest Laser Writer?

LCLS: The World's Largest Laser Writer?

Physics / General Physics

created Oct 20, 2009 | popularity 5 / 5 (1) | comments 1

(PhysOrg.com) -- While not the smallest lettering ever created, the tiny initials "LCLS" have been written with what may be the world's most potent pen. Etched into boron carbide, a super-hard substance used ...


Nanoscale structures revealed on Diamond's latest beamline

Nanoscale structures revealed on Diamond's latest beamline

Chemistry / Analytical Chemistry

created Oct 15, 2009 | popularity 5 / 5 (1) | comments 0

On Monday 12th October, a team of scientists from the University of Bath became the first researchers to use the UK’s national synchrotron facility’s latest experimental station (I07). Designed for investigating ...


How the 100th protein structure solved at Diamond impacts our understanding of how insects smell

How the 100th protein structure solved at Diamond impacts our understanding of how insects smell

Biology / Cell & Microbiology

created Sep 29, 2009 | popularity 5 / 5 (1) | comments 0

New research announced today, Wednesday 30th September, by a team of leading scientists working with the UK's national Synchrotron, Diamond Light Source, could have a significant impact on the development ...


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. ...


New X-ray technique illuminates reactivity of environmental contaminants

New X-ray technique illuminates reactivity of environmental contaminants

Chemistry / Biochemistry

created Sep 15, 2009 | popularity 3 / 5 (2) | comments 0

Thanks to a new analytical method employed by researchers at the University of Delaware, scientists can now pinpoint, at the millisecond level, what happens as harmful environmental contaminants such as arsenic ...


Jet-propelled Imaging for an Ultrafast Light Source

Physics / General Physics

created Aug 04, 2009 | popularity 5 / 5 (2) | comments 1

(PhysOrg.com) -- 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. ...


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 ...


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. ...


Twinkling nanostars cast new light into biomedical imaging

Twinkling nanostars cast new light into biomedical imaging

Nanotechnology / Bio & Medicine

created Jul 21, 2009 | popularity 5 / 5 (2) | comments 1

(PhysOrg.com) -- Purdue University researchers have created magnetically responsive gold nanostars that may offer a new approach to biomedical imaging.


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 ...


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 ...


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 (29) | 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 ...