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black body
black body In physics, an ideal body that absorbs all incident radiation and reflects none. Such a body would look ‘perfectly’ black. Wien's law, Stefan's law, and Planck's law of black body radiation grew out of this study, as did Planck's discoveries in quantum mechanics.
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"black body." World Encyclopedia. 2005. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>. "black body." World Encyclopedia. 2005. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O142-blackbody.html "black body." World Encyclopedia. 2005. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-blackbody.html |
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black body
black body A body which absorbs electro-magnetic energy perfectly. If the body remains at constant temperature then it also radiates electromagnetic radiation perfectly in equilibrium with that which it absorbs. See also STEFAN-BOLTZMANN LAW.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "black body." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "black body." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-blackbody.html AILSA ALLABY and MICHAEL ALLABY. "black body." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-blackbody.html |
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black body
black body An imaginary object that is a perfect absorber of radiation (and also a perfect emitter) at all wavelengths. The wavelength at which a black body emits the peak of its radiation depends solely on its temperature.
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Cite this article
"black body." A Dictionary of Astronomy. 1997. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>. "black body." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O80-blackbody.html "black body." A Dictionary of Astronomy. 1997. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-blackbody.html |
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