Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 368
Lp. Duddell Oscillograph.—Several devices have been employed todetermine the wave foim of an alternating electromotive force orcurrent, but probably the most convenient is that used by W. Duddell ^in the instrument known as the oscillograph. This is essentially adead Ijeat gal^■anoraeter, modified… … Fig. 382. movement copies the comparatively low frequency force due to thealternating current. The phosphor-bronze strip sssspasses over the pulley P (Fig. 332),the ends being attached to termi-nals fixed in the block K. Aspring, not shown in the figure,pulls P upwards, and maintains aconsiderable…
Electricity · Magnetism
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