Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 487
HE ELECTRO-MAGNET. To the poles of the magnet should be fitted two shortiron bars having conical ends. These bars will need nospecial fastening, as the attraction of the magnet will holdthem in place. In Fig. ■]]/[ is shown a simple way of reproducing Fou-caults experiment. A centrally apertured… … Diamagnetism. bars are arranged on the poles of the magnet, as shownin the engraving, with the conical ends about one-fourthinch apart. A strong current is sent through the magnet,and the copper disk is whirled rapidly by quickly unwind-ing a string from the spool, after the manner of top…
Physics · Lantern projection · Electric apparatus and appliances
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