The christiansen experiment with birefringent powders
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Optical effects analogous to those exhibited by isotropic materials in a Christiansen cell are also observable with birefringent materials in a fine state of subdivision. While the transmitted light is fully polarised, the diffusion halo is depolarised in part and exhibits colours between parallel and crossed polaroids which are complementary to each other.
KeywordsTransmitted Light Riser Benzyl Alcohol Carbon Disulphide Barium Sulphate
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