bn:00059207n
Noun Concept
Categories: Optics stubs, Optical mineralogy, Mineralogy stubs, Polarization (waves)
EN
optic axis  optic axis of a crystal  extraordinary axis  optically biaxial crystal
EN
In a doubly refracting crystal, the line in the direction of which no double refraction occurs WordNet 3.0
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EN
In a doubly refracting crystal, the line in the direction of which no double refraction occurs WordNet 3.0 & Open English WordNet
An optic axis of a crystal is a direction in which a ray of transmitted light suffers no birefringence. Wikipedia
The direction in which a ray of light passing through a crystal does not suffer double refraction. Wiktionary
EN
A crystal may have either one or two optic axes WordNet 3.0 & Open English WordNet
IS A
WordNet 3.0 & Open English WordNet
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