visible radiation

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Related to visible radiation: ultraviolet radiation, infrared radiation

visible radiation

Etymology: L, visibilis, vision, radiare, to shine
electromagnetic radiation in the wavelengths between infrared and ultraviolet that can be perceived by most normal humans.

visible radiation

The radiation of the visible spectrum, which may be broken up into different wavelengths representing different colors:

Violet, 3900–4550 angstrom units (A.U.)

Blue, 4550–4920 A.U.

Green, 4920–5770 A.U.

Yellow, 5770–5970 A.U.

Orange, 5970–6220 A.U.

Red, 6220–7700 A.U.

See also: radiation
References in periodicals archive ?
Fortunately, many phenomena that cannot readily be measured with visible radiation can be determined through the use of other types of radiation.
Intense, competing emissions from cooler stars in the cluster's core dominate the visible radiation, explains Stecher, of NASA's Goddard Space Flight Center in Greenbelt, Md.
This is also implies that there was a time when the early universe lacked galaxies resembling those now observed, and that there has been no opportunity for filing the universe with visible radiation.