black body

(redirected from Black body spectrum)
Also found in: Thesaurus, Encyclopedia.
Related to Black body spectrum: blackbody radiation, Black body radiation

black body

or

blackbody

n
(General Physics) physics a hypothetical body that would be capable of absorbing all the electromagnetic radiation falling on it. Also called: full radiator
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.black body - a hypothetical object capable of absorbing all the electromagnetic radiation falling on it; "a black body maintained at a constant temperature is a full radiator at that temperature because the radiation reaching and leaving it must be in equilibrium"
natural object - an object occurring naturally; not made by man
References in periodicals archive ?
If an object in a perfectly reflecting cavity absorbs and emits some radiation at all frequencies it is clear that Stewart, Planck and Kirchhoff all held that the full black body spectrum will by achieved by the mechanism outlined numerically above and described by Stewart in the passage quoted.
However, if the spectrum is indeterminate at any frequencies then it is not possible to properly determine a temperature which is defined in terms of the black body spectrum.
This is the required condition for the redshifted spectrum of a black body to be a black body spectrum itself.