Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 611
e iscovered with a top about one-eighth of an inch thick. Thetable standard is hollow, and chambered out sufficiently at 588 EXPERIMENTAL SCIENCE. the lower end to receive a compactly made Leclanche bat-tery, which rests in the cap, G, fitted to the lower end ofthe standard. From the battery two… … Rapping and Talking Table. the battery is in place, one of its conductors will touch oneof the pieces of metal, and the other spring will touch theother piece. The two semicircular pieces of metal are con-nected with two wires extending upward through the tablestandard, one wire being connected…
Physics · Lantern projection · Electric apparatus and appliances
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