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<a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>

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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. - _Jeremy Tan_, Jun 13 2019. (End)

Wikipedia, <a href="https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law">Stefan-Boltzmann law</a>

Fixed SI constants used in deriving this constant: A003676 (h), A003678 (c), A070063 (k).

Wikipedia, <a href="https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_constant">Stefan-Boltzmann constant</a>

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

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

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

BIPM, <a href="https://www.bipm.org/utils/common/pdf/CGPM-2018/26th-CGPM-Resolutions.pdf">On the revision of the International System of Units (SI)</a>, BIPM, Nov 13-16 2018.

sigma = 5.6703 *6703744... * 10^-8 W m^-2 K^-4

Updated to 2019 SI by Jeremy Tan, Jun 13 2019

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