"Total Cross-section"@en . "http://www.iso.org/iso/catalogue_detail?csnumber=31895"^^ . . . . . "\u03C3\u209C" . . "http://en.wikipedia.org/wiki/Cross_section_(physics)"^^ . . . . . "\"Total Cross-section\" is related to the absorbance of the light intensity through Beer-Lambert's law. It is the sum of all cross-sections corresponding to the various reactions or processes between an incident particle of specified type and energy and a target particle." . . . . . . . . . . . . .