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IEVref:113-05-07ID:
Language:enStatus: Standard
Term: Planck constant
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Symbol: h
Definition: fundamental physical constant governing, among others, quantum effects and the relation between the frequency f of electromagnetic radiation and the energy E = hf of the corresponding photons, the value of which is set to 6,626 070 15 × 10−34 J s

Note 1 to entry: The Planck constant is used in the SI to define the kilogram.


Publication date:2020-12
Source:SI Brochure, 9th edition, 2019, 2.2, modified – The definition in the SI Brochure has been revised to comply with the IEV rules.
Replaces:113-05-07:2011-04
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