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(Q94199486)
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English
luminous efficacy of monochromatic radiation of frequency 540 × 10¹² Hz
physical constant
luminous efficacy for monochromatic radiation of frequency 540 × 10¹² Hz
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Statements
instance of
physical constant
0 references
luminous efficacy of radiation
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ISQ dimension
L
−
2
M
−
1
T
3
J
{\displaystyle {\mathsf {L}}^{-2}{\mathsf {M}}^{-1}{\mathsf {T}}^{3}{\mathsf {J}}}
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numeric value
683±0
lumen per watt
2 references
stated in
SI Brochure (9th edition): Concise summary
stated in
2018 CODATA recommended values
quantity symbol (LaTeX)
K
c
d
{\displaystyle K_{\mathrm {cd} }}
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different from
maximum luminous efficacy
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Identifiers
IEV number
845-21-093
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NIST/CODATA ID
kcd
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Wolfram Language entity code
Entity["PhysicalConstant", "MonochromaticRadiation540THzLuminousEfficacy"]
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Wolfram Language unit code
"MonochromaticRadiation540THzLuminousEfficacy"
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