Radiant exposure
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Radiant exposure (at a point of a surface)
The product of an irradiance (Ee) and its duration (dt).
Symbol He He = ?Ee.dt
Unit joule per square metre (J/m2)
Note 1: Equivalent definition Surface density of the radiant energy received.
Note 2: Formerly irradiation in English and irradiation in French.
Reference: C.I.E. (modified)
Note 3: For further definitions see C.I.E.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)