This video showcases the restoration of a vintage telephone magneto generator, a hand-cranked electrical generator that produces alternating current. Historically significant in early telegraphy and ...

Stories of the history of telephone service in the area go back to “magneto offices,” a name referring to the crank-operated magneto switchboard that operators used to make a telephone ring. In the ...

WHEN magnetic material is subjected to a mechanical force, its magnetization is changed; and conversely, if its magnetization is changed, the material expands or contracts. There is thus a ...