Linear Absorption Coefficient
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2-1-215
Linear Absorption Coefficient (of an absorbing medium)
The quotient of the internal absorptance of a path element traversed by the radiation, by the length (dl) of this element.
Symbol: a
Unit: m-1
Reference: C.I.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)