speed of light in a vacuum

Universal fundamental physical constant representing the speed of electromagnetic waves in vacuum; by definition $c 0$ is exactly = $299 792 458 m s −1$ .

Source:

CODATA Bull. 1986, 63, 1

Related index:

IUPAC > Gold Book > math/physics > physical constants

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Cite as:
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. https://doi.org/10.1351/goldbook.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.S05854.

Original PDF version: http://www.iupac.org/goldbook/S05854.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 The PDF version is out of date and is provided for reference purposes only.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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