Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 664
sthrough a narrow slit to secure a perfect spectrum, and be-tween the screen and the prism should be placed a screenAvith an oblong aperture, which will allow all of the band oflight to appear upon the screen with the exception of thecolored extremities. With the prism supported in this way,it is… … Revolving Cell for Polariscope. In Figs. 619 and 620 is shown a revolving cell containingchips of selenite in water. As the cell revolves by frictional Fig. 621.
Physics · Lantern projection · Electric apparatus and appliances
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