A081819 Decimal expansion of Wien wavelength displacement law constant.

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

Offset

-2,1

Links

Table of n, a(n) for n=-2..84.

NIST, CODATA Value: Wien wavelength displacement law constant.

Index entries for natural constants.

Formula

Equals A003676*A003678/(A070063*A094090).

Example

b = 2.89777...*10^-3 m K.

Mathematica

RealDigits[662607015*299792458/(1380649*10^13*(5+ProductLog[-5/E^5])), 10, 120][[1]] (* Amiram Eldar, Apr 27 2025 *)

Crossrefs

Cf. A003676, A003678, A070063, A094090.

Sequence in context: A388516 A388346 A195724 * A296850 A021349 A145426

Adjacent sequences: A081816 A081817 A081818 * A081820 A081821 A081822

Keyword

nonn,cons

Author

Benoit Cloitre, Apr 10 2003

Extensions

Edited by Andrey Zabolotskiy, Jun 23 2017

Updated to the exact value according to the 2019 SI redefinition by Andrey Zabolotskiy, Aug 25 2020

Name clarified by Lee A. Newberg, Oct 14 2022

Status

approved