Tag «optical indicatrix»

Optical Indicatrix of Minerals

In anisotropic minerals, the refractive index varies with the crystal direction. This relationship can be illustrated with the help of a geometrical figure called the ”optical indicatrix”. The optical indicatrix of an anisotropic crystal is an ellipsoid whose semiaxes are proportional to the refractive indices in the respective directions. In the crystals of cubic system …