Term: brightness
https://doi.org/10.1351/goldbook.BT07337

Definition:
Obsolete term. This term is reserved for non-quantitative reference to physiological perception of light and is not recommended as a quantitative measure of the radiance of an emitting device, e.g., a lamp.

Related Terms:
1) radiance (http://doi.org/10.1351/goldbook.R05037).
2) lamp (http://doi.org/10.1351/goldbook.L03447).

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 310 (https://doi.org/10.1351/pac200779030293)

Citation: 'brightness' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.BT07337

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