optogalvanic effect


Also found in: Acronyms.

optogalvanic effect

[¦äp·tō·gal¦van·ik i‚fekt]
(physics)
The alteration of the current through an electrical discharge by light incident on the discharge space.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.