https://doi.org/10.1351/goldbook.A00028
Logarithm of the ratio of incident to transmitted @R05046@ 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 @E02293@, although the term @E02293@, better called @A00513@, is reserved for the quantity which takes into account the effects of @L03641@ and @S05487@ as well.