Logarithm of the ratio of incident to transmitted @[email protected] through a sample (excluding the effects on cell walls). Depending on the base of the logarithm a decadic and Napierian absorbance are used. Symbols: \(A\), \(A_{10}\), \(A_\text{e}\). This quantity is sometimes called @[email protected], although the term @[email protected], better called @[email protected], is reserved for the quantity which takes into account the effects of @[email protected] and @[email protected] as well.
Green Book, 2nd ed., p. 32 [Terms] [Book]
See also:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2169 [Terms] [Paper]
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2226 [Terms] [Paper]