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 A003673 Decimal expansion of fine-structure constant alpha. (Formerly M4325) 9

%I M4325

%S 0,0,7,2,9,7,3,5,2,5,6

%N Decimal expansion of fine-structure constant alpha.

%D John Barrow, The Constants of Nature, 367pp, Jonathan Cape, 2002.

%D H. J. Fischbeck and K. Fischbeck, Formulas. Facts and Constants, Springer-Verlag, NY, 2nd ed., 1987.

%D K. R. Lang, Astrophysical Data: Planets and Stars, Springer-Verlag, NY, 1991.

%D Martin J. Rees. Just Six Numbers: the deep forces that shape the universe. Phoenix. 1999

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H NIST, <a href="http://physics.nist.gov/cgi-bin/cuu/Value?alph">fine-structure constant</a>

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Fine_Structure_Constant">Fine-structure constant</a>

%F alpha = e^2/(4*Pi*E*h*c), where e is the elementary charge (A081823), E is the electric constant (A081799), h is the reduced Planck constant (A254181), c is the speed of light (A003678). - _Ilya Gutkovskiy_, Jul 27 2016

%F alpha = V_n1/c = A081800/A003678. - _Omar E. Pol_, Mar 11 2018

%e alpha = 7.29735256... * 10^-3 = 0.00729735256...

%t UnitConvert[Quantity["FineStructureConstant"]] (* requires Mathematica 9+; _Andrey Zabolotskiy_, Aug 15 2016 *)

%Y Cf. A005600, A082726.

%K cons,nonn

%O 0,3

%A _N. J. A. Sloane_, _Mira Bernstein_

%E Updated May 20 2003

%E Updated by _Omar E. Pol_, Aug 09 2009, _R. J. Mathar_, Dec 15 2012

%E Updated by _Arkadiusz Wesolowski_, Feb 08 2016

%E Definition edited by _N. J. A. Sloane_, Feb 11 2016

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Last modified March 18 17:51 EDT 2019. Contains 321292 sequences. (Running on oeis4.)