Lodge, Oliver, Sir, 1851-1940 · London, New York, Macmillan and co. · leaf 159
lines of force are entirely powerless to cause motion inthis case. An external field is essential. 140 MODERN VIEWS OF ELECTRICITY, [part ill. To show the rotation of liquid conductors underthe influence of a magnet, take a circular shallowtrough of liquid, supply it with stout… … Fig. 22.—Rotation of a liquid disk conveying a radial current in a verticalmagnetic field. over the edge of the trough (Fig. 22).i The experi-ment is plainly the same as Fig. 19, except that aliquid disk is used in place of a solid one. Or, again, ^ In practice^ it is most convenient to split a…
Electricity
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