6.2 Anisotropy and Birefringence
12/40
b. Fresnel optical indicatrix (Fresnel ellipsoid, optical indicatrix, index
ellipsoid, reciprocal ellipsoid, Poinsot
ellipsoid, ellipsoid of wave normals)
When n = n = n = n , material
Along the AA', material shows n .
1
2
3
o
o
is isotropic.
Along the BB', material shows n .
e

---