Reference Terms
from Wikipedia, the free encyclopedia

Solar radiation

Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy.

About half of the radiation is in the visible short-wave part of the electromagnetic spectrum.

The other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum [1].

The portion of this ultraviolet radiation that is not absorbed by the atmosphere produces a suntan or a sunburn on people who have been in sunlight for extended periods of time.

Note:   The above text is excerpted from the Wikipedia article "Solar radiation", which has been released under the GNU Free Documentation License.
Related Stories

Space & Time News
May 25, 2017

Latest Headlines
updated 12:56 pm ET