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A324033
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Decimal expansion of the conversion factor from the old derived SI unit lm (lumen) to the combination of 2019 SI units K_{cd}*h*(Δν_{Cs})^2.
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1
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2, 6, 1, 4, 8, 3, 0, 4, 8, 2, 2, 8, 5, 6, 1, 5, 6, 8, 6, 3, 7, 6, 1, 9, 7, 1, 9, 3, 0, 3, 9, 8, 5, 4, 1, 6, 1, 4, 3, 6, 2, 7, 6, 8, 8, 3, 1, 5, 3, 6, 5, 3, 3, 6, 5, 2, 7, 2, 7, 2, 3, 7, 9, 6, 4, 9, 7, 9, 6, 4, 3, 6, 8, 6, 1, 0, 9, 5, 8, 7, 6, 7, 2, 8, 5, 3, 9, 1, 6, 4, 9, 7, 4, 0, 8, 9, 3, 6, 2, 4, 0, 1, 7, 5, 4, 8, 1
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OFFSET
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10,1
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COMMENTS
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For the seven units of the 2019 SI system of units see the BIPM link with the resolutions of the CGPM, and A322415.
The 2010 SI unit K_{cd} is the luminous efficacy of monochromatic radiation of frequency 540 x 10^{12} Hz, given by K_{cd} = 683 lm/W = 683 cd sr s^3 kg^{-1} m^{-2}, with the old SI unit cd and the derived unit sr = steradian.
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LINKS
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BIPM, CGPM-2018 [See the link "Resolutions of the CGPM" there.]
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FORMULA
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1 lm = (1/638) K_{cd}*W = 1/(683*662607015*(9192631770)^2)*10^{42} K_{cd}*h*(Δν_{Cs})^2 = 2.614830482285615686376197193039854161436276883153653365272723... x 10^{10} K_{cd}*h*(Δν_{Cs})^2 .
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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