Wright, Mark R., 1854- · London : Longmans · leaf 194
Induction i&S either by induction, or by using the electrophorus or electricalmachine; test parts of the surface with the proof-plane. … Fig. i8o. On carrying the plane to the electroscope, it is found thatthe greatest amount of electrification, can be taken off by theplane at a, where the curvature is least, and the least amountat c, where the curvature is greatest. The amount of electrification per unit of surface, is calledthe…
Physics
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