Pockels’ Phenomenological Theory of Photoelasticity of Crystals
The refractive index n, one of the most important optical properties of all transparent media, does not transform like a tensor. However, the dielectric tensor K ij or its reciprocal, the impermeability tensor (1/K) ij , does transform like a second-rank tensor.
KeywordsConjugate Class Phenomenological Theory Symmetry Operation Symmetry Element Polarization Constant
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