Abstract
TWO years ago, Prof. Bose, in a communication to the Asiatic Society of Bengal, described some new devices for dealing with electric waves, which did much to bridge over the gulf between electric waves and light waves. One of these was the employment of nemalite, a fibrous variety of brucite, which has the valuable property of absorbing electric waves vibrating in a certain plane, and transmitting all waves at right angles to that plane. It thus could be made to do for electric radiation what a plate of tourmaline does for light, except that the directions of absorption and transmission are reversed. Nemalite is therefore a very convenient polariser and analyser of electric waves. Tourmaline also acts in the same manner (with planes reversed), but not to any extent comparable with the efficiency of nemalite. The apparatus was subsequently exhibited and worked before the Liverpool meeting of,the British Association.
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The Refraction of Electric Waves1. Nature 57, 353–354 (1898). https://doi.org/10.1038/057353a0
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DOI: https://doi.org/10.1038/057353a0