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Meaning of optic axis | Babel Free

Noun CEFR B2

Definitions

The optical axis.
The direction in which a ray of light passing through a crystal does not suffer double refraction.

Examples

“[B]inocular creatures can in an instant […] move their eyes so as to direct the optick Axis to any point […].”

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

optic chiasm optic chiasma optic cup optic disc optic disk optic foramen