black-body

blackbody

[blak-bod-ee]
noun, plural blackbodies. Physics.
a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface.
Also called perfect radiator.


Origin:
1700–10

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Science Dictionary
blackbody   (blāk'bŏd'ē)  Pronunciation Key 
A theoretically perfect absorber and emitter of every frequency of electromagnetic radiation. The radiation emitted by a blackbody is a function only of its temperature.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

blackbody definition


An object that can absorb and send off radiation with complete efficiency — that is, it reflects (see reflection) none of the radiation that falls on it. The higher the object's temperature, the higher the frequency of the radiation it gives off.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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