Quantity of Light: Difference between revisions
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The product of luminous flux (F) and its duration (dt). | The product of luminous flux (F) and its duration (dt). | ||
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[[Category:Alphabetical Index]] | [[Category:Alphabetical Index]] | ||
[[Category:IALA Dictionary 1970-89 Edition]] | [[Category:IALA Dictionary 1970-89 Edition]] | ||
[[Category:IALA Dictionary 2023 Revision]] | |||
Latest revision as of 09:36, 17 September 2026
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)
