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A003676
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Decimal expansion of the Planck constant h (Joule * second).
(Formerly M4057)
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53
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OFFSET
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-33,1
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COMMENTS
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There are at least five different methods of determining Planck's constant (h). Listed below are the best estimate CODATA values for each of these five methods as of December 2012.
6.6260657(88)*10^(-34) J*s - Faraday Constant method.
6.6260678(27)*10^(-34) J*s - Josephson Constant method.
6.62606889(23)*10^(-34) J*s - Watt Balance method.
6.6260724(57)*10^(-34) J*s - Magnetic resonance method.
6.6260745(19)*10^(-34) J*s - X-ray crystal density method. (End)
The latest definition is that the Planck constant h is exactly 6.62607015*10^(-34) J*s, according to the ISO standard (effective on May 20th, 2019). h is one of the seven 1990 SI units, see the second BIPM link and A322415. - Ralf Steiner, Dec 17 2018 and Wolfdieter Lang, Feb 12 2019
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REFERENCES
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H. J. Fischbeck and K. Fischbeck, Formulas. Facts and Constants, Springer-Verlag, NY, 2nd ed., 1987.
K. R. Lang, Astrophysical Data: Planets and Stars, Springer-Verlag, NY, 1991.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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EXAMPLE
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Planck constant h = 6.62607015 * 10^{-34) J * s. J (Joule) = kg m^2 s^(-1).
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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Updated to conform with CODATA 2010 recommended value Raphie Frank, Dec 15 2012
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STATUS
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approved
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