Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Grey Body

  • Daniel Rouan
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_677-2


A grey body is a hypothetical source of electromagnetic radiation that would emit as a black body but with an emissivity lower than 1 and constant with wavelength. The grey body assumption is often more useful as a first approximation to the actual emission of a real object or medium than is the ideal black body radiation. It is used in radiative transfer problems, for instance, in planetary atmospheres.

See Also


Bioorganic Chemistry Radiative Transfer Electromagnetic Radiation Real Object Transfer Problem 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.LESIAObservatoire Paris-Site de MeudonMeudonFrance