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出典:Wikipedia
出典:『Wikipedia』 (2011/05/02 09:52 UTC 版)
Absorption cross section is a measure for the probability of an absorption process. More generally, the term cross section is used in physics to quantify the probability of a certain particle-particle interaction, e.g., scattering, photoabsorption, etc. (Note that light in this context is described as consisting of particles, i.e., photons.)