The On-Line Encyclopedia of Integer Sequences (OEIS)

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Revision History for A003678

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A003678

Decimal expansion of the SI unit c (speed of light in vacuum), c = 299792458 meters/second.
(history; published version)

#100 by Michael De Vlieger at Fri Jan 26 10:18:25 EST 2024

STATUS

reviewed

approved

#99 by Joerg Arndt at Fri Jan 26 10:12:54 EST 2024

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proposed

reviewed

#98 by Andrey Zabolotskiy at Fri Jan 26 10:05:43 EST 2024

STATUS

editing

proposed

#97 by Andrey Zabolotskiy at Fri Jan 26 10:04:32 EST 2024

COMMENTS

Since 1983, the speed of light has been defined to be exactly 299792458 m/s. - Ron Marcinski (ronmarcinski(AT)hotmail.com), Apr 18 2002

Assigned metrological constants [before the inception of the 2019 SI, which introduced some changes, see below for references] and some of their combinations that appear in the OEIS include the speed of light (this sequence) and its square, cube, and 4th power (A182999, A183000, and A183001, respectively); magnetic permeability of vacuum (A019694); electric permittivity of vacuum (A081799); characteristic impedance of vacuum (A213610); standard gravity acceleration (A072915), standard atmosphere (A213611), Julian year (A213612), Gregorian year (A213613) and the light-year (A213614), all in basic SI units.

Also decimal expansion of c is also the speed of gravity. - Omar E. Pol, Jun 23 2017

LINKS

BIPM, <a href="httphttps://www1www.bipm.org/">Bureau International des Poids et Mesures</a>, the historic home of SI units (works jointly with NIST).

BIPM, <a href="https://www.bipmdoi.org/utils/common/pdf/CGPM-2018/26th-CGPM-Resolutions10.pdf59161/CGPM2018RES1E">On the revision of the International System of Units (SI)</a>, BIPM, Nov 13-16 2018.

G. Bonnet, <a href="http://culturesciencesphysique.ens-lyon.fr/Entree_par_theme/generalites/VLumiere">La vitesse de la lumiere (Text in French)</a> [broken link].

CROSSREFS

More assigned constants: A003676 (h), A230458 (Δν_{Cs}), A081823 (e), A322578 (N_A), A070063 (k), A021687 (1/K_{cd}), ; A182999, (c^2), A183000 (c^3), A183001 (c^4), A019694, A081799, A213610, A072915, A213611, A213612, A213613, A213614.

EXTENSIONS

Additional comments from Ron Marcinski (ronmarcinski(AT)hotmail.com), Apr 18 2002

STATUS

approved

editing

#96 by Michael De Vlieger at Fri Aug 12 09:31:10 EDT 2022

STATUS

reviewed

approved

#95 by Michel Marcus at Fri Aug 12 00:36:15 EDT 2022

STATUS

proposed

reviewed

#94 by Andrey Zabolotskiy at Thu Aug 11 17:01:54 EDT 2022

STATUS

editing

proposed

#93 by Andrey Zabolotskiy at Thu Aug 11 17:00:29 EDT 2022

CROSSREFS

More assigned constants: A003676 (h), A230458 (Δν_{Cs}), A081823 (e), A322578 (N_A), A070063 (k), A322578 A021687 (N_A1/K_{cd}), A182999, A019694, A081799, A213610, A072915, A213611, A213612, A213613, A213614.

STATUS

approved

editing

#92 by N. J. A. Sloane at Sun May 26 15:12:06 EDT 2019

STATUS

editing

approved

#91 by N. J. A. Sloane at Sun May 26 15:12:04 EDT 2019

CROSSREFS

More assigned constants: A003676 (h), A230458 (Δν_{Cs}), A081823 (e), A322578 (N_A), A322577 A070063 (k), A322578 (N_A), A182999, A019694, A081799, A213610, A072915, A213611, A213612, A213613, A213614.

STATUS

approved

editing