Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 621
material enough in the end to hold the objective.A second mirror, arranged parallel with the first, is sup-ported over the end oi the objective, and serves to Fig. 570. … The Opeidoscope. throw the image on the wall. If the experimenter will besatisfied Avith images on the ceiling, the second mirror maybe dispensed with. The tank shown at 5, Fig. 568, is designed to hold variousliquids used in experiments in the vertical lantern. It con-sists of a plate of glass to…
Physics · Lantern projection · Electric apparatus and appliances
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