OFFSET
-7,1
COMMENTS
From Jeremy Tan, Jun 13 2019: (Start)
The Stefan-Boltzmann law states that for a black body with temperature T, its radiant emittance j* (power radiated per unit area) is sigma * T^4.
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. (End)
LINKS
BIPM, On the revision of the International System of Units (SI), BIPM, Nov 13-16 2018.
Wikipedia, Stefan-Boltzmann constant
Wikipedia, Stefan-Boltzmann law
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
KEYWORD
nonn,cons
AUTHOR
Benoit Cloitre, Apr 10 2003
EXTENSIONS
Edited by Andrey Zabolotskiy, Jun 23 2017
Updated to 2019 SI by Jeremy Tan, Jun 13 2019
STATUS
approved