Modern electricity and magnetism, theoretically and practically considered (1885)
Avery, Elroy M[cKendree], 1844- [from old catalog] · New York and Chicago, Sheldon and company · leaf 81
Fig. 177. («.) One of these tubes, used to show that *■ radiant matter mayexert mechanical action, is shown in Fig. 177. It consists of a highlyexhausted glass tube containing a glass railway. The axle of asmall wheel revolves on the rails, the spokes of the wheels carrying … Fig. 178. mica paddles. Pole pieces are fused in through the glass, as repre-sented. Whichever pole is made negative, / radiant matter darts FRICTIONAL ELECTRICITY. 251 from it along the tube, strikes the upper paddles, causing the wheelto roll along the railway. By reversing the poles, the motion…
Electricity · Magnetism
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