Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 256
ZED LIGHT. 233 CHAPTER XII. POLARIZED LIGHT. Glass, like all uncrystallized bodies, is said to be singlerefracting, because it diverts the ray in one direction only.By placing a rhomb of Iceland spar over a small black spotformed on a piece of white paper, two images of the spotappear, showing that… … Iceland Spar. nary one, and the image of the spot produced by theextraordinary ray appears nearer to the observer thanthe spot itself. This property of splitting the ray trans-mitted through the crystal, which was first noticed and com-mented on by Erasmus Bartholinias, in 1669, is known asdouble…
Physics · Lantern projection · Electric apparatus and appliances
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