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Difference between revisions of "Candela"

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Candela

Description

The candela, symbol cd, is the SI unit of luminous intensity in a given direction. It is defined by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540 ร— 1012 Hz, Kcd, to be 683 when expressed in the unit lm Wโˆ’1.

Abbreviation: cd

Reference: Bureau International des Poids et Mesures (2019) The International System of Units (SI). 9th edition:117-216 ISBN 978-92-822-2272-0. - ยปOpen Access pdfยซ


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