THE TRAJECTORY OF THE EXTRAORDINARY RAY AS THE CRYSTAL ROTATES
晶体转动时非常光的轨迹

In this areticle, general formulae for the direction of the extraordinary ray are obtained in the case of light incident on uniaxial crystal, the corresponding data are plotted in three-view diagrams for Iceland spar, these make the trajectory of the extraordinary ray clear as the crystal rotates. The obtained results offer a possibility of developing new methods for determination of optical constants of crystals.