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Bunsen-Roscoe law

Pronunciation: bun'sen ros'ko

Definition: in two photochemical reactions, the darkening of a photographic plate or film, if the products of the intensity of illumination and the time of exposure are equal, the quantities of chemical material undergoing change will also be equal; the retina for short periods of exposure obeys this law.

Synonym(s): reciprocity law, Roscoe-Bunsen law

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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