Cherenkov radiation in biaxial crystals—II

By a series of transformations the integral for the radiated energy in the general case is brought into a form which facilitates its evaluation. Two results follow from this. First, it is seen that a generalized uniaxiality condition can be formulated even when the electric and the magnetic anisotropy axes do not coincide. Secondly, a theorem is established which enables one to deduce the results for double anisotropy from those for anisotropy in ɛ only by means of certain simple substitutions.