Gerard, Eric Mary, 1856-1916 · New York W.J. Johnston · leaf 136
r act upon a freely suspendedpith-ball. If this ball be charged beforehand with positiveelectricity, it is seen to be attracted by the extremity^, andrepelled by C. From this we conclude that the former isnegatively, the latter positively, electrified. When theinfluencing sphere, A, is withdrawn,… … Fig. 46. If the conductor BC is connected for a moment to theearth while it is under the influence of A, we observe aftertaking away A that every portion of BC is chargednegatively. This method of charging the conductor is called electri-fication by influence. 79. Let us suppose that the framework…
Electricity · Magnetism
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