# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a361352 Showing 1-1 of 1 %I A361352 #66 Apr 23 2023 22:29:10 %S A361352 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, %T A361352 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, %U A361352 7,7,7,4,3,0,3,3,7,0,4,5,2,5,4,4,9,3,7 %N A361352 Decimal expansion of the conventional value of farad-90 (F_{90}). %C A361352 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. %H A361352 NIST Physics Laboratory, conventional value of farad-90 %H A361352 Wikipedia, Conventional electrical unit %F A361352 F_{90} = 25812.807/((6.62607015*10^(-34))/(1.602176634*10^(-19))^2) = 5521725026748260492435541/5521725125000000000000000 F. %e A361352 0.99999998220633275229... (rational number). %Y A361352 Cf. A248508, A248510, A361006, A361010, A361011. %K A361352 cons,nonn,easy %O A361352 0,1 %A A361352 _Marco Ripà_, Apr 02 2023 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE