Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 94
is posi-tively and the whole of its lower half negatively electrified.As the motion continues the positively charged portion ofthe plate comes close to the tongue Q, while the negativelycharged part approaches P. The armature Q therefore dis-charges negative electricity on to the back of the plate,… … Fig. 49. and the action continues; moreover since the charges on Pand Q are continually increasing the potential differencebetween the combs rises rapidly, and if the knobs a, b areseparated it may be sufficient to produce a spai-k betweenthem, and so permit of the transference of positive…
Electricity · Magnetism
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