News tagged with light

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

Your eyes are half a billion years old

Look after your eyes – they are at least half a billion years old, and a good deal older than your brain. The eyes are one of our most remarkable and precious organs, yet their origins have been shrouded ...

Jul 30, 2013
popularity 4.3 / 5 (18) | comments 5 | with audio podcast

'VIP' treatment for jet lag

A small molecule called VIP, known to synchronize time-keeping neurons in the brain's biological clock, has the startling effect of desynchronizing them at higher dosages, says a research team at Washington ...

Oct 28, 2013
popularity 4.6 / 5 (10) | comments 0 | with audio podcast

New paper describes how DNA avoids damage from UV light

In the same week that the U.S. surgeon general issued a 101-page report about the dangers of skin cancer, researchers at Montana State University published a paper breaking new ground on how DNA – the genetic code in every ...

Jul 31, 2014
popularity 4.8 / 5 (9) | comments 0

Light

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.

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