https://doi.org/10.1351/goldbook.A00044
Absorptance
divided by the optical path length. For very low
attenuance
it approximates the
absorption coefficient
[within the approximation (1eA)A]. The use of this term is not recommended.
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2227 [Terms] [Paper]