A361006 - OEIS

%I #11 Apr 23 2023 22:30:57

%S 1,0,0,0,0,0,0,1,0,6,6,6,5,1,0,7,2,5,0,5,9,0,4,4,8,9,4,2,9,7,2,1,6,4,

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

%U 3,7,5,2,7,9,3,6,3,8,6,0,7,0,1,5,1,6,1

%N Decimal expansion of conventional value of volt-90 (V_{90}).

%C The conventional volt (i.e., V_{90}) is the electromotive force measured against a Josephson effect standard using the defined value of the Josephson constant, K_{J-90} (i.e., 483597.9 GHz/V). Hence, K_J = 483597.9 GHz/V_{90} (see Wikipedia, "Conventional electrical unit", in Links).

%C Thus, according to the 2019 SI system, V_{90} is given by K_{J-90}/K_J in units V.

%H NIST Physics Laboratory, <a href="https://physics.nist.gov/cgi-bin/cuu/Value?volt90">conventional value of volt-90</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Conventional_electrical_unit">Conventional electrical unit</a>

%F V_{90} = K_{J-90}/K_J = 483597.9/((2 * 1.602176634*10^(-19))/(6.62607015*10^(-34))) = 71207857995393/71207850400000000000000 V.

%e 0.00000000100000010666510725... (rational number, period 778716).

%Y Cf. A248508.

%K cons,nonn,easy

%O -8,10

%A _Marco Ripà_, Feb 28 2023