The On-Line Encyclopedia of Integer Sequences (OEIS)

A081820 revision #14

A081820

Decimal expansion of the Stefan-Boltzmann constant sigma in the 2019 SI system in units Watt/(m^2*K^4).

5, 6, 7, 0, 3, 7, 4, 4, 1, 9, 1, 8, 4, 4, 2, 9, 4, 5, 3, 9, 7, 0, 9, 9, 6, 7, 3, 1, 8, 8, 9, 2, 3, 0, 8, 7, 5, 8, 4, 0, 1, 2, 2, 9, 7, 0, 2, 9, 1, 3, 0, 3, 6, 8, 2, 4, 0, 5, 4, 6, 1, 7, 3, 7, 0, 5, 3, 9, 4, 8, 1, 6, 0, 6, 2, 6, 5, 2, 3, 3, 2, 6, 0, 8, 2, 5, 7, 1, 8, 5, 7, 7, 7, 0, 4, 4, 6, 8, 8, 7, 0, 3

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OFFSET

-7,1

COMMENTS

In SI units, all the values in the defining relation in the Formula section are fixed as of May 20 2019 (see the BIPM link), so this constant is also fixed. - Jeremy Tan, Jun 13 2019

LINKS

Table of n, a(n) for n=-7..94.

BIPM, On the revision of the International System of Units (SI), BIPM, Nov 13-16 2018.

NIST, CODATA Value: Stefan-Boltzmann constant

Wikipedia, Stefan-Boltzmann constant

Index entries for natural constants

FORMULA

sigma = 5.6703744... * 10^-8 W m^-2 K^-4

Equals A222609*A070063^4/(A003676^3*A003678^2).

MATHEMATICA

First@ RealDigits@ N[2 Pi^5 (1380649 10^-29)^4 / (15 (662607015 10^-42)^3 299792458^2), 120] (* Jeremy Tan, Jun 13 2019 *)

CROSSREFS