Photometry. The CIE system of physical photometry Ingestion-build-242630 This document specifies requirements for

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Photometry. The CIE system of physical photometry Ingestion-build-242630 This document specifies requirements for1. SCOPE This international Standard specifies the characteristics of the system of physical photometry established by the CIE and accepted as the basis for the measurement of light. It defines the photometric quantities, units and standards that make up the CIE system of physical photometry and that have been officially accepted by the Comit International des Poids et Mesures (CIPM). They comprise: the definition of photometric quantities and units,