Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 125
exhibits the same electro-magnetic prop-erties that it does while flowing along a conductingwire connecting the poles. Hence the battery, ifmade small and light, will revolve by the influenceof a magnet. This is effected in the followingmanner. 173. Rotating Battery. — A small double cylin-der of… … ROTATING BATTERY, 109 rests in an agate cup on the pole. The inner cylin-der of course has no bottom. A cyhnder of zinc isFi<^ GO supported by a pivot in a similar manner upon the copper arch,and, being intermediate in sizeS between the two copper cylin-k.« ders, hangs freely in the cell. This…
