Lodge, Oliver, Sir, 1851-1940 · London, New York, Macmillan and co. · leaf 192
One can easily see this effect of a whirl in a tea-cupor inverted bell-jar full of liquid. Stir it vigorously,and leave it. It presses against the walls harder thanbefore, so that if they were elastic they would bulge CHAP. IX.] STRUCTURE OF A MAGNETIC FIELD. 173 out with the lateral pressure ; and… … Fig. 31.—A shape of the earth model which, when whirled, exerts a tension alongits axis, pulling up the weight attached to it, and a pressure at right angles, byreasm of its bulging out. Two circular boards joined by a short wide elastictube or drum : a weight hung to the lower board, thetop board…
Electricity
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