An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 229
. Therings A A, to which the ends of the coilsare attached, are in this case called col-lecting rings, and the parts BB, whichbear on the collecting rings, are calledbrushes. In an actual machine madeup for the purpose of generating elec-tricity by a coil revolving in a magnetic attached to diding… … DIRECT-CURRENT GENERATORS 201 are used for ringing telephone call bells, are small alternating-current generators; each consists of a coil of wire wound on aniron core which is revolved in the magnetic field between thepoles of a permanent horse-shoe magnet. In the Ford magnetowe have a series of…
Electricity · Magnetism
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