Lodge, Oliver, Sir, 1851-1940 · London, New York, Macmillan and co. · leaf 151
vertically on water, and K 2 132 MODERN VIEWS OF ELECTRICITY, [part III. you have a compass-needle : it sets itself with its axisnorth and south. Suspend two coils, and they willattract or repel or turn each other round just like twomagnets. 69. As longas one only considers the action of acoil at… … Fig. 16.—Floating battery and helix acting as a compass-needle. to it, it is necessary to specify the shape of thecorresponding magnet. If the coil be a long cylindrical helix like a close-spired corkscrew, as in Fig. 16, it behaves like acylindrical magnet filling the same space. If the coilbe a…
Electricity
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