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radiation constants

Fundamental physical constants characterizing black body radiation. The first radiation constant is c 1 = 2 π h c 0 2 = 3.741 7749 22 × 10 −16 W m 2, the second is c 2 = h c 0 k = 1.438 769 12 × 10 −2 m K, where h is the Planck constant c 0 the speed of light and k the Boltzmann constant.
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.R05051.
Original PDF version: http://www.iupac.org/goldbook/R05051.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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