A362590 Decimal expansion of the conventional value of von Klitzing constant (R{K-90}) in ohms (Omega).

2, 5, 8, 1, 2, 8, 0, 7

Offset

5,1

Comments

In 1988, the CIPM recommended the adoption of conventional value for the von Klitzing constant as exactly R{K-90} = 25812.807 ohms as of 1 January 1990.

Consequently, in 1991, the eighteenth CGPM noted the conventional value for the von Klitzing constant. Furthermore, in 2000, the CIPM approved the use of the quantum Hall effect, with the value of R{K-90} to be used to establish a reference standard of resistance. Finally, in 2018, the twenty-sixth CGPM resolved to abrogate the conventional value of the von Klitzing constant with the 2019 redefinition of SI base units (as stated on the Wikipedia page "Conventional electrical unit", see Links).

Links

Table of n, a(n) for n=5..12.

NIST Physics Laboratory, Conventional value of von Klitzing constant R_{K-90}

Wikipedia, Conventional electrical unit

Wikipedia, Magnetic flux quantum

Wikipedia, 2019 redefinition of the SI base units

Example

R{K-90} = 25812.807 ohms.

Crossrefs

Cf. A248508, A248510, A361006, A361010, A361011, A361352, A362000, A362530.

Sequence in context: A344655 A241292 A366248 * A248510 A020772 A131598

Adjacent sequences: A362587 A362588 A362589 * A362591 A362592 A362593

Keyword

cons,nonn,fini,full

Author

Marco Ripà, Apr 26 2023

Status

approved