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A005601 Decimal expansion of proton-to-electron mass ratio.
(Formerly M4470)
3
1, 8, 3, 6, 1, 5, 2, 6, 7, 3, 4, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
4,2
COMMENTS
Curiously, this ratio coincides with 6*Pi^5 = 1836.1181... up to 5 digits (first noticed in 1952 by Friedrich Lenz in the Physical Review). - Jean-François Alcover, Jul 27 2016
REFERENCES
John Barrow, The Constants of Nature, 367pp, Jonathan Cape, 2002.
K. R. Lang, Astrophysical Data: Planets and Stars, Springer-Verlag, NY, 1991.
NIST, 2018 CODATA recommended values (see NIST link).
Martin J. Rees. Just Six Numbers: the deep forces that shape the universe. Phoenix. 1999
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
E. R. Cohen and B. N. Taylor, The 1986 adjustment of the fundamental physical constants, Rev. Modern Phys., 59 (1987), 1121-1148.
Friedrich Lenz, The Ratio of Proton and Electron Masses, Phys. Rev. 82, 554 - Published 15 May 1951.
NIST, Proton-electron mass ratio, viewed May 20 2023
EXAMPLE
1836.15...
CROSSREFS
Cf. A003677.
Sequence in context: A171043 A124599 A365959 * A321098 A308741 A304580
KEYWORD
cons,nonn,nice,hard
AUTHOR
EXTENSIONS
Updated by Ivan Panchenko, May 29 2019
Updated using current NIST CODATA value. - Harvey P. Dale, May 20 2023
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)