login
A361352
Decimal expansion of the conventional value of farad-90 (F_{90}).
2
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
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.
FORMULA
F_{90} = 25812.807/((6.62607015*10^(-34))/(1.602176634*10^(-19))^2) = 5521725026748260492435541/5521725125000000000000000 F.
EXAMPLE
0.99999998220633275229... (rational number).
CROSSREFS
KEYWORD
cons,nonn,easy
AUTHOR
Marco Ripà, Apr 02 2023
STATUS
approved