optical anomaly

optical anomaly

[′äp·tə·kəl ə′näm·ə·lē]
(physical chemistry)
The phenomenon in which an organic compound has a molar refraction which does not agree with the value calculated from the equivalents of atoms and other structural units composing it.
References in periodicals archive ?
If a product under test should fail, Stratos can determine the cause, using tools and methods such as scanning electron microscopes, wire bond pull and die shear testing, hermetic leak testing, microscopic metallurgical examination, optical anomaly mapping, and more.

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