2026
CLM-CODATA-0193= 683EXACT VALUECODATA 2022 recommended value; requires Registry editorial review before publication.Source: CODATA Recommended Values of the Fundamental Physical Constants: 2022 — luminous efficacy ↗
PROVENThe 2022 CODATA recommended value of luminous efficacy, retained with its published standard uncertainty.
The question, scope, and sources behind this Registry record.
Record the 2022 CODATA recommended value of luminous efficacy in lm W^-1.
Current frontiers derived from accepted Claims.
A published value under the current specification, not two opposing bounds.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.