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black body
(redirected from Black-body)

    Also found in: Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
black body
n
(Physics / General Physics) Physics a hypothetical body that would be capable of absorbing all the electromagnetic radiation falling on it Also called full radiator
ThesaurusLegend:  Synonyms Related Words Antonyms
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"
blackbody, full radiator
natural object - an object occurring naturally; not made by man


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? Mentioned in ? References in periodicals archive
 
Spectral responsivity measurements are used to calibrate the response of a filter radiometer, in turn used to estimate the temperature of a black-body radiator and hence provide the reference standard for spectral irradiance measurements.
Uncertainty propagation for NIST visible spectral standards by Gardner, James L. / Journal of Research of the National Institute of Standards and Technology
The theoretical calculations suggest that if black-body radiation were producing the liight, it should be a billion times stronger at the vents than in the cooler water above.
Light at the bottom of the ocean by Science News
Most importantly, the 1979 redefinition of the candela allows this to be an approach for the realization of a luminous intensity scale--quite a simplification from the previous requirement to use a platinum-point black-body source.
The candela and photometric and radiometric measurements by Parr, Albert C. / Journal of Research of the National Institute of Standards and Technology
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