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Lumen
Unit of light output (1985). The measure of luminous flux (the rate at which light pulses are emitted or received). For instance, one candela of light covering a square foot of surface.
References
Case, D., 1985, Motion Picture Film Processing, Media Manuals, Focal Press, London, Boston
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.