Abstract
BREAK off a plate of ice and hold it between the sky and a pool of water. Its reflected image will show the beautiful colours due to polarised light. The incident rays should come from a part of the sky about 90° from the sun, and reflection should take place at the polarising angle for water, and the plate will probably require adjusting to bring out the maximum effect. Water, vaporous, solid, and liquid, thus furnishes us with poliriser, crystal, and analyser I do not remember to have read any account of this very simple experiment, for which Nature provides all the materials.
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WHITMELL, C. A “Natural” Experiment in Polarised Light. Nature 23, 268 (1881). https://doi.org/10.1038/023268b0
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DOI: https://doi.org/10.1038/023268b0
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