Kramers-Kronig relation

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Kramers-Kronig relation

[′krā·mərz ′krō·nig ri‚lā·shən]
(optics)
A relation between the real and imaginary parts of the index of refraction of a substance, based on the causality principle and Cauchy's theorem.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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