News tagged with light

Related topics: wavelength · solar cells · laser · physical review letters · photons

To scratch an itch is a hairy problem

An insect lands on your arm, moving the tiny hairs on your skin just enough to make you want to scratch. Salk Institute researchers have uncovered evidence of a dedicated neural pathway that transmits the itchy feeling triggered ...

Oct 29, 2015
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Nanotechnology could spur new heart treatment

A new nanoparticle developed by University of Michigan researchers could be the key to a targeted therapy for cardiac arrhythmia, a condition that causes the heart to beat erratically and can lead to heart attack and stroke.

Oct 29, 2015
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The brain forgets in order to conserve energy

Our brains not only contain learning mechanisms but also forgetting mechanisms that erase "unnecessary" learning. A research group at Lund University in Sweden has now been able to describe one of these mechanisms at the ...

Oct 27, 2015
popularity1435 comments 0


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.

This text uses material from Wikipedia, licensed under CC BY-SA

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