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A213610 Decimal expansion of the characteristic impedance of vacuum in SI units. 9
3, 7, 6, 7, 3, 0, 3, 1, 3, 4, 6, 1, 7, 7, 0, 6, 5, 5, 4, 6, 8, 1, 9, 8, 4, 0, 0, 4, 2, 0, 3, 1, 9, 3, 0, 8, 2, 6, 8, 6, 2, 3, 5, 0, 8, 3, 5, 2, 4, 1, 8, 6, 5, 5, 2, 3, 2, 0, 7, 4, 6, 3, 8, 2, 9, 6, 7, 0, 7, 2, 6, 9, 2, 2, 1, 3, 0, 7, 6, 9, 8, 8, 8, 0, 1, 6, 6, 8, 7, 5, 1, 9, 9, 5, 6, 5, 5, 8, 6, 6, 9, 3, 6, 4, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

3,1

COMMENTS

Denoted Z_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

LINKS

Table of n, a(n) for n=3..107.

FORMULA

Z_0 = [magnetic_permeability_of_vacuum]*[speed_of_light_in_vacuum] = 10^-6 * A019694 * A003678 = Pi * 119.9169832 Ohms, where 119.9169832 = 4*10^-7 * 299792458 (exact value).

EXAMPLE

376.730313 ... Ohm [also kg * m^2 * s^-3 * A^-2].

MATHEMATICA

RealDigits[4*Pi*10^-7*299792458, 10, 105] // First (* Jean-Fran├žois Alcover, Mar 07 2014 *)

CROSSREFS

Other assigned constants: A003678, A182999, A081799, A019694, A072915, A213611, A213612, A213613, A213614.

Sequence in context: A245259 A075785 A105735 * A117823 A178242 A070882

Adjacent sequences:  A213607 A213608 A213609 * A213611 A213612 A213613

KEYWORD

nonn,cons

AUTHOR

Stanislav Sykora, Jun 16 2012

STATUS

approved

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Last modified April 28 23:27 EDT 2017. Contains 285604 sequences.