bar magnet

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[Apparatus used to convert electrical energy into mechanical rotation, the basis of dynamos, using bar magnet, beaker of mercury, and current carrying wire] / A.A., del. ; J.B. Taylor, sc.

[Apparatus used to convert electrical energy into mechanical rotation,...

Illus. in: Experimental researches in electricity / Michael Faraday. London : R. and J.E. Taylor, 1839-1855, v. 2, pl. 4. Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of... More