Difference between revisions of "Light Exposure"
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Latest revision as of 10:00, 1 March 2009
2-1-070
The product of an illuminance (E) and its duration (dt).
Symbol: H H = ?E.dt
Unit: lux-second (lx.s)
Note 1: Formerly Quantity of Illumination and, in French, Quantite d'Eclairement.
Note 2: Equivalent definition Surface density of the quantity of light received.
Reference: C.I.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)