Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 419
Morse Alphabet. A . — K _ . _ U . . — B — *.. L. — .. V-.. C— . — . M W. D—.. N— . X— .._ E. 0 T— . F.. — . p Z . G . Q . _ H . . . . E . — . I . . S . . . J T — 253. The Telephone. In a telephone use is madeof the currents produced when a piece of magnetised soft iron 251-254] TELEGRAPHY AND… … Fig. 258. is wound on a flat bobbin which surrounds one pole of apermanent magnet, the ends of the coil come to bindingscrews connected to the external circuit. A disc of thinsheet-iron is supported at its edges very close to the poleof the magnet which carries the coil. This constitutes…
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
