0,3

The estimate is continually changing.

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

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

NIST, Constants, Units and Uncertainty

alpha = 7.2973525376 * 10^-3; standard uncertainty 0.0000000050 * 10^-3

Cf. A005600, A082726.

Sequence in context: A021936 A154176 A156547 this_sequence A021141 A147677 A090243

Adjacent sequences: A003670 A003671 A003672 this_sequence A003674 A003675 A003676

cons,nonn

N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein

Updated May 20 2003

Updated by Omar E. Pol (info(AT)polprimos.com), Aug 09 2009