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A081799
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Decimal expansion of the electric permittivity of vacuum in SI units as defined before 20 May 2019.
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14
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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
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OFFSET
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-11,1
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COMMENTS
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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
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LINKS
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Table of n, a(n) for n=-11..92.
NIST, electric constant epsilon_0.
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FORMULA
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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
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EXAMPLE
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8.854187817...*10^-12 F m^-1.
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MAPLE
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Digits := 105 : A003678 := 2.99792458e8 : A019694 := 4*Pi*1.0e-7 ; evalf(1/A019694/A003678^2) ; # R. J. Mathar, May 05 2006
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CROSSREFS
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Other assigned constants: A003678, A182999, A019694, A213610, A072915, A213611, A213612, A213613, A213614.
Sequence in context: A228719 A021117 A305208 * A154186 A030171 A153619
Adjacent sequences: A081796 A081797 A081798 * A081800 A081801 A081802
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KEYWORD
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cons,nonn
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AUTHOR
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Benoit Cloitre, Apr 10 2003
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EXTENSIONS
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More terms from R. J. Mathar, May 05 2006
Description updated by Ivan Panchenko, May 22 2019
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STATUS
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approved
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