Having two axes as biaxial polarization biaxial crystals
- having two axes
- Alt. of Biaxial
(a.) Alt. of Biaxial
This refractive index should be equal to the greatest index of the plate, and with a biaxal plate the mean axis of optical symmetry should be parallel to its faces and in the normal section of the prisms, while with an uniaxal plate the optic axis should be in a plane perpendicular to this normal section.