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 123
t as-cends in one half of its length and descends in the other. 168. Revolving WireFrame. — The revolution ofa conductor round a magnetis shown by the instrumentrepresented in Fig. 58. Twolight frames of copper wire,R R, are supported by pivotsresting on the poles, N andS, of a steel magnet of theU… … REVOLVING CYLINDER. 107 on the arms of the magnet. Bent wires, passing fromthe interior of the cells, support the cups A and D;and the cisterns themselves are fixed at any requiredheight by means of binding screws attached to them.Each of the wire frames is surmounted by a mercurycup; into these…
