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.
CITATION STYLE
Narasimhamurty, T. S. (1981). Pockels’ Phenomenological Theory of Photoelasticity of Crystals. In Photoelastic and Electro-Optic Properties of Crystals (pp. 47–133). Springer US. https://doi.org/10.1007/978-1-4757-0025-1_3
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