Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 662
Incandescent Lamp arranged for Projection. the experiment. The lamp consists of two wire carbonholders attached to a wooden standard and connected withthe rods of the lantern, as in the cases before described. The Fig. 617. … Projection of the Arc. carbons are projected with a dim light, showing the craterof the positive carbon and the point of the negative carbon.Then the current is turned on, the carbons are brought into 640 EXPERIMENTAL SCIENCE. contact and separated, forming the arcbecome incandescent, and the arc…
Physics · Lantern projection · Electric apparatus and appliances
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