Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 304
C N Fig. 2,5.58.—-Faraday disc, or mercury motor ampere hour meter; view showing electric andmagnetic circuits. essentially of a copper disc floated in mercury between thepoles of a magnet and provided with leads to and from themercury at diametrically opposite points. The theoreticalrelations of… … contact C, passes throughthe comparatively highresistance mercury H tothe edge of the low re-sistance copper disc Dacross the disc to themercury H and out ofcontact C. The mag-netic flux cuts across thedisc on each side fromN to S, making a com-plete circuit through Mand M. -The relativedirections…
Electrical engineering
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