Quantity of Light
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2-1-025
The product of luminous flux (F) and its duration (dt).
Symbol: Q Q = ? F.dt
Unit: lumen-second (lm.s), lumen-hour (lm.h)
Reference: C.I.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
