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.
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References in periodicals archive ?
An overall symmetry and classically planar spatial recession stabilize and give stateliness to Moore's compositions while also providing ballast for so many sorties into realities where optical anomaly and fantasy intersect.
John Moore: portals

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