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 A322415 Decimal expansion of h * Δν_{Cs} / c^2 in units of kg in the 2019 SI system of units. 16
 6, 7, 7, 7, 2, 6, 5, 3, 1, 2, 3, 1, 2, 0, 6, 7, 6, 1, 0, 6, 1, 7, 2, 7, 0, 2, 3, 4, 6, 5, 8, 4, 3, 5, 5, 3, 9, 4, 4, 6, 4, 5, 5, 7, 0, 6, 2, 4, 2, 3, 2, 3, 9, 8, 0, 4, 2, 6, 6, 2, 2, 4, 5, 0, 7, 0, 9, 9, 8, 6, 1, 7, 6, 7, 8, 8 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET -40,1 COMMENTS The seven defining constants of the SI system (May 20 2019) are (see the BIPM link): Δν_{Cs} = Δν(133Cs)_{hfs} = 9192631770 s^(-1) c = 299792458 m/s h = 6.62607015*10^{-34} J s [kg m^2 s^(-1)] e = 1.602176634*10^{-19} C [A s] k = 1.380649*10^{-23} J/K [kg m^2 s^(-2) K^(-1)] N_A = 6.02214076*10{23} mol^(-1) K_{cd} = 683 lm/W [cd sr s^3 kg^(-1) m^(-2)] In brackets are the units given in s, m, kg, A, K, and cd*sr. The symbol sr stands for steradian (or sterad). K_{cd} is the luminous efficacy of monochromatic radiation of frequency 540*10^12 Hz, with Hz = 1/s. The given combination of three constants defines the kg from the Planck constant h after s and m have been expressed in terms of Delta nu_{Cs} and c. LINKS Table of n, a(n) for n=-40..35. BIPM, On the revision of the International System of Units (SI), Nov 13-16 2018. Max Planck, Ueber irreversible Strahlungsvorgänge, Ann. Physik 1 (1900) 69-122. See paragraph 26. Natürliche Maasseinheiten. pp. 120-122; alternative link. Wikipedia, 2019 redefinition of SI base units FORMULA Equals 0.677726531231206761061727023465843553944645570624232398042662245... * 10^{-40} kg. CROSSREFS Cf. A230458 (Δν_{Cs}), A003678 (c) A003676 (h), A081823 (e), A070063 (k), A248510 (R_K), A248508 (K_{J}), A322579 (m), A322580 (kg), A324031 (A), A324032 (K), A324033 (lm), A324034 (J). Sequence in context: A201753 A084256 A197692 * A023409 A349991 A351784 Adjacent sequences: A322412 A322413 A322414 * A322416 A322417 A322418 KEYWORD nonn,cons,easy AUTHOR Wolfdieter Lang, Feb 11 2019 STATUS approved

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Last modified August 14 18:14 EDT 2024. Contains 375166 sequences. (Running on oeis4.)