## Wikipedia - Draft:Glossary of engineering (M) (en) Wikipedia - Draft:Glossary of engineering: M (en) Wikipedia - Glossary of engineering (en) Wikipedia - Glossary of engineering: M (en) Wikipedia - Glossary of engineering: M - Z (en) Wikipedia - Glossary of engineering: M–Z (en) Wikipedia - Koefisien atenuasi molar (id) Wikipedia - Molar attenuation coefficient (en) absorptivity [obsolete]

https://doi.org/10.1351/goldbook.A00044
@[email protected] divided by the optical path length. For very low @[email protected] it approximates the @[email protected] [within the approximation $$(1 - e^{-A}) \sim A$$]. 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]