Photos of various birefringent stuff in cross-polarized light. Many more examples and an explanation of birefringence can be found here. Vitamin C, 10x. (2016-12-27)
Sodium acetate, 10x. (2016-12-27)
Paracetamol, 10x. (2016-12-27)
Sodium acetate, 10x. (2016-12-28)
Plastic, 10x. (2017-01-12)
Citric acid, 10x. (2017-01-16)
Sand, 10x. (2017-01-28)
Partially molten ice, 10x. (2018-02-04)
Menthol, 10x. (2018-02-09)
A human hair, 10x. (2018-02-11)
Potato starch, 40x. (2018-02-12)
Benzoic acid, 10x. (2018-12-08)
Benzoic acid, 10x. (2018-12-08)
Benzoic acid, 10x. (2018-12-08)
Paracetamol, 20x. (2019-02-09)
Benzoic acid, 20x. (2019-02-09)
Citric acid, 20x. (2019-02-09)
Sodium saccharin, 20x. (2019-02-09)
Menthol, 20x. (2019-02-09)
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