

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
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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 (* JeanFrançois 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



