(idea) by spazm Wed Nov 08 2000 at 19:46:58

Photochemical refers to the effects of light on substances, or the production of light by nonliving substances. For example, the exposure of film in a camera is a photochemical process, and so is some glowing phosphorous as one might find on a watch dial.

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(definition) by Webster 1913 Wed Dec 22 1999 at 1:58:38

Pho`to*chem"ic*al (?), a. [Photo- + chemical.] Chem.

Of or pertaining to chemical action of light, or produced by it; as, the photochemical changes of the visual purple of the retina.

 

© Webster 1913.

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