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 A081799 Decimal expansion of the electric permittivity of vacuum in SI units as defined before 20 May 2019. 16
 8, 8, 5, 4, 1, 8, 7, 8, 1, 7, 6, 2, 0, 3, 8, 9, 8, 5, 0, 5, 3, 6, 5, 6, 3, 0, 3, 1, 7, 1, 0, 7, 5, 0, 2, 6, 0, 6, 0, 8, 3, 7, 0, 1, 6, 6, 5, 9, 9, 4, 4, 9, 8, 0, 8, 1, 0, 2, 4, 1, 7, 1, 5, 2, 4, 0, 5, 3, 9, 5, 0, 9, 5, 4, 5, 9, 9, 8, 2, 1, 1, 4, 2, 8, 5, 2, 8, 9, 1, 6, 0, 7, 1, 8, 2, 0, 0, 8, 9, 3, 2, 8, 6, 7 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET -11,1 COMMENTS Denoted epsilon_0, this is a function of assigned metrological constants. Regarding these, see A003678 for general context notes, references and links. - Stanislav Sykora, Jun 16 2012 Also called electric constant. - Omar E. Pol, Oct 17 2013 The new value as defined after 20 May 2019 is (8.8541878128 +- 0.0000000013) * 10^(-12) F/m. - Jianing Song, Mar 13 2021 LINKS NIST, electric constant epsilon_0. Wikipedia, Vacuum permittivity FORMULA Equals 10^6/(A019694*A003678^2). - R. J. Mathar, May 05 2006; corrected by Arkadiusz Wesolowski, Feb 03 2017 Explicitely: 1/([magnetic_permeability of vacuum]*[speed_of_light in vacuum]^2). - Stanislav Sykora, Jun 16 2012 Also 625000/(22468879468420441*Pi). - Omar E. Pol, Oct 17 2013 EXAMPLE 8.854187817...*10^-12 F m^-1. MAPLE Digits := 105 : A003678 := 2.99792458e8 : A019694 := 4*Pi*1.0e-7 ; evalf(1/A019694/A003678^2) ; # R. J. Mathar, May 05 2006 CROSSREFS Other assigned constants: A003678, A182999, A019694, A213610, A072915, A213611, A213612, A213613, A213614. Sequence in context: A021117 A335414 A305208 * A154186 A030171 A153619 Adjacent sequences:  A081796 A081797 A081798 * A081800 A081801 A081802 KEYWORD cons,nonn AUTHOR Benoit Cloitre, Apr 10 2003 EXTENSIONS More terms from R. J. Mathar, May 05 2006 Description updated by Ivan Panchenko, May 22 2019 STATUS approved

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Last modified January 21 00:46 EST 2022. Contains 350473 sequences. (Running on oeis4.)