luminous efficacy of monochromatic radiation of frequency 540 × 10¹² Hz (Q94199486)

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physical constant

• luminous efficacy for monochromatic radiation of frequency 540 × 10¹² Hz

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Language	Label	Description	Also known as
English	luminous efficacy of monochromatic radiation of frequency 540 × 10¹² Hz	physical constant	luminous efficacy for monochromatic radiation of frequency 540 × 10¹² Hz

Statements

instance of

physical constant

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luminous efficacy of radiation

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ISQ dimension

${\displaystyle {\mathsf {L}}^{-2}{\mathsf {M}}^{-1}{\mathsf {T}}^{3}{\mathsf {J}}}$

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numeric value

683±0 lumen per watt

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stated in

SI Brochure (9th edition): Concise summary

stated in

2018 CODATA recommended values

quantity symbol (LaTeX)

${\displaystyle K_{\mathrm {cd} }}$

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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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Sitelinks

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