Lodge, Oliver, Sir, 1851-1940 · London, New York, Macmillan and co. · leaf 156
experiment with the flexible gold thread issimple, satisfactory, and striking, but the rotatoryproperties connected with a magnet may be illustratedin numbers of other ways. Thus, pivot a disk at its CHAP. VII.] ELECTRO-MAGNETISM. 137 centre, and arrange some light contact to touch itsedge, either… … Fig. 18.—Pivoted disk with radial current, revolving in a magnetic iield and windingup a weight. The current is supplied to the axle by screw A, and leaves the rimby mercury trough M. The same apparatus obviously serves to demonstratecurrents induced by motion ; both directly and by the damping…
Electricity
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