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URL: https://oeis.org/A003673

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A003673
Decimal expansion of fine-structure constant alpha.
15
0, 0, 7, 2, 9, 7, 3, 5, 2, 5, 6
OFFSET
0,3
REFERENCES
John Barrow, The Constants of Nature, 367pp, Jonathan Cape, 2002.
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.
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).
FORMULA
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
alpha = V_n1/c = A081800/A003678. - Omar E. Pol, Mar 11 2018
EXAMPLE
alpha = 7.29735256... * 10^-3 = 0.00729735256...
MATHEMATICA
UnitConvert[Quantity["FineStructureConstant"]] (* requires Mathematica 9+; Andrey Zabolotskiy, Aug 15 2016 *)
CROSSREFS
Sequence in context: A154176 A156547 A180872 * A021141 A246948 A364899
KEYWORD
cons,nonn
EXTENSIONS
Updated May 20 2003
Updated by Omar E. Pol, Aug 09 2009, R. J. Mathar, Dec 15 2012
Updated by Arkadiusz Wesolowski, Feb 08 2016
Definition edited by N. J. A. Sloane, Feb 11 2016
STATUS
approved