Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 664
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. … ■ii /1,„ Glass under Pressure. contact with the roller, the bits of selenite are carried upwardand allowed to fall, thus continually changing their positionin the field. This object shows to the best advantage the 642 EXPERIMENTAL SCIENCE. gorgeous colors of polarized light. Small pieces of…
Physics · Lantern projection · Electric apparatus and appliances
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