Abstract
In photochemical reactions, light can be regarded as one of the reactants, the other being the absorbing molecules. An important property of these reactions is the quantum efficiency, which is defined as the ratio of the number of molecules changed to the number of photons absorbed.
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Dartnall, H.J.A. (1972). Photosensitivity. In: Dartnall, H.J.A. (eds) Photochemistry of Vision. Handbook of Sensory Physiology, vol 7 / 1. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-65066-6_4
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