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What is Illumination Terminology and Units Guide about?

The document defines key terminology used in illumination, including luminance, illuminance, lux, lumen, candela, foot-candle, efficacy, efficiency, and glare. Luminance refers to the amount of light emitted from a surface, while illuminance refers to the amount of light incident on a surface. The lux is the SI unit of illuminance and luminous intensity is measured in candelas. There are also definitions provided for direct glare, indirect glare, discomfort glare, and disabling glare.

Author

Green

Language

EN