Einstein photochemical equivalence law

Einstein photochemical equivalence law

[′īn‚stīn ¦fōd·ō¦kem·ə·kəl i′kwiv·ə·ləns ‚lȯ]
(physical chemistry)
The law that each molecule taking part in a chemical reaction caused by electromagnetic radiation absorbs one photon of the radiation. Also known as Stark-Einstein law.
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