Frederick Rudberg2026-03-222026-03-22183210.1080/14786443208647928https://doi.org/10.1080/14786443208647928https://andeanlibrary.org/handle/123456789/62351enRefractionOpticsMaterials sciencePhysicsLXX. <i>On the variations which temperature produces in the double refraction of crystals</i>article