

A005600


Decimal expansion of reciprocal of finestructure constant alpha.
(Formerly M2606)


11




OFFSET

3,2


COMMENTS

The finestructure "constant" actually isn't a constant, it depends on the energy at which it is measured: Its value is known to approach 1/128 at interaction energies above 80 GeV. For other considerations, e.g., whether the value of the finestructure constant differs by location and over time, see the Wikipedia article or other links.  M. F. Hasler, Oct 30 2013


REFERENCES

John Barrow, The Constants of Nature, 367 pp., Jonathan Cape, 2002.
K. R. Lang, Astrophysical Data: Planets and Stars, SpringerVerlag, NY, 1991.
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



FORMULA



EXAMPLE

1/alpha = 137.035999206(11) [Morel et al., 2020]


CROSSREFS



KEYWORD



AUTHOR



EXTENSIONS

Updated May 20 2003
Dropped the digits that could change with 1 standard error variation of the value provided by CODATA  Andrey Zabolotskiy, Dec 12 2020


STATUS

approved



