 Mise en pratique for the definition of the candela and associated derived units for photometric and radiometric quantities in the SI

ID: the-international-system-of-units-si-ninth-edition-si-brochure/mise-en-pratique-for-the-definition-of-the-candela-and-associated-derived-units-for-photometric-and-radiometric-quantities-in-the-si

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The International System of Units (SI), ninth edition, SI Brochure / Mise en pratique for the definition of the candela and associated derived units for photometric and radiometric quantities in the SI by

Codex  0 2026-10-13

By Consultative Committee for Photometry and Radiometry.

Online text: www.bipm.org/documents/20126/41489685/SI-App2-candela.pdf

Cited passages: Appendix 2, v1.02, 22 March 2021, §3.1, printed pp. 2–3: wavelength convention, normalized functions and interpolation; §3.1, equation (2), printed p. 3: spectral weighting normalized at the defining frequency; §3.1, printed p. 3: photopic and scotopic luminous efficiency functions.

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