Revolving Light
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“If again the light was to revolve, then a revolving chandelier was employed having a certain number of flat faces, on each of which was fixed a number separate lamps and reflectors with their axes parallel to each other. When the chandelier revolved, and one of the flat sides was turned towards the sailor, he would, when at some distance from the shore, receive a flash at once form each of the mirrors which were on that face, but when the face was turned away from him a dark period would intervene until the next face came round again.” —The Encyclopedia Britannica, 1910
Keywords
lighthouse, mirror, light, reflection, chandelier, Reflector, Parabolic, Hutchinson, Paraboloid, CatoptricSource
The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)
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