A248510 Decimal expansion of von Klitzing constant R(K) (ohms).

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

Offset

5,1

Comments

The value is exactly 5521725125000000000000/213914163877964163 = 25812.8074593... ohms, based on h/e^2 and their SI definitions. - Ralf Steiner, Dec 29 2018

2010 CODATA value was 25812.8074434(84) ohms; updated to 25812.8074555(59) ohms in the 2014 correction. (That is now obsolete. - N. J. A. Sloane, Feb 14 2019)

See the references in A322415. - Wolfdieter Lang, Feb 11 2019

Links

Table of n, a(n) for n=5..104.

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

NIST, von Klitzing constant

Wikipedia, Quantum Hall effect

Wikipedia, Redefinition of SI base units

Formula

Equals A003676/A081823^2.

Example

R(K) = h/e^2 = 25812.8074593... ohm.

Mathematica

RealDigits[6.62607015`100*10^(-34)/(1.602176634`100*10^(-19))^2][[1]]

Crossrefs

Cf. A003676 (h), A081823 (e), A248507.

Sequence in context: A241292 A366248 A362590 * A020772 A131598 A220337

Adjacent sequences: A248507 A248508 A248509 * A248511 A248512 A248513

Keyword

nonn,cons

Author

Arkadiusz Wesolowski, Oct 07 2014

Extensions

Updated by Ralf Steiner, Dec 29 2018

Status

approved