Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 143
purchased at a hardware or electrical store for fifteencents. It is clamped to the bottom of the box just constructed 128 EASY ELECTRICAL EXPERIMENTS. by a wooden cleat shown at K, held by a screw at its center. Theends of the magnet should project a little above a line drawnthrough the center of… … e.
Electric apparatus and appliances · Electricity
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