"Electro-magnet" Quotes from Famous Books
 ... years after Arago's discovery, Sturgeon made the first "electro-magnet" by winding a soft iron core with wire through which a current of electricity was passed. This study of electro-magnets was taken up by Professor Joseph Henry, of Albany, New York, who succeeded in making magnets of enormous lifting power by winding the iron core with several coils of wire. One ...
— A History of Science, Volume 3(of 5) • Henry Smith Williams
... current, which is closed by the ball as long as it lies on the jaws of the fork, flows around the arms of the electro-magnet, m, which continually attracts an armature fastened to a lever arm, and coming over the poles of the magnet. If the circuit is broken by the fall of the ball, the armature at once rises upward. By this a spring contained in the tube, g, ...
— Scientific American Supplement, No. 611, September 17, 1887 • Various
... shown a large electro-magnet and an induction-coil vacuum discharge spinning round and round when ...
— Scientific American Supplement No. 275 • Various |
