A361352 - OEIS

A361352

Decimal expansion of the conventional value of farad-90 (F_{90}).

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

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OFFSET

0,1

COMMENTS

Since the conventional volt (i.e., V_{90}, as stated by A361006) is the electromotive force measured against a Josephson effect standard using the defined value of the Josephson constant, K_{J-90}, and given the fact that the conventional ohm (i.e., Omega_{90}, as stated by A361010) is the electrical resistance measured against a quantum Hall effect standard using the defined value of the von Klitzing constant, R_{K-90} (see Wikipedia, "Conventional electrical unit", in Links), it follows that the conventional farad (i.e., F_{90}) is given by C_{90}/V_{90}, which is R_{K-90}/R_K according to the 2019 SI system in units F.

LINKS

Table of n, a(n) for n=0..86.

NIST Physics Laboratory, conventional value of farad-90

Wikipedia, Conventional electrical unit

FORMULA

F_{90} = 25812.807/((6.62607015*10^(-34))/(1.602176634*10^(-19))^2) = 5521725026748260492435541/5521725125000000000000000 F.

EXAMPLE

0.99999998220633275229... (rational number).

CROSSREFS

Cf. A248508, A248510, A361006, A361010, A361011.

Sequence in context: A196498 A277535 A292905 * A363018 A269351 A363117

Adjacent sequences: A361349 A361350 A361351 * A361353 A361354 A361355

KEYWORD

cons,nonn,easy

AUTHOR

Marco Ripà, Apr 02 2023

STATUS

approved