Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 960
current con-tinues to pass.-Electric clocks are clockwork machines, in which an electromagnet is both the motor and the regulator, by means of an electric current regularly interrupted, in a manner resembling that described in the preceding paragraph. Fig. 917 represents the face of such a clock,… … Fig. 916 911. Electric clocks. -912] Electric Telegraphs 935 by means of a ratchet, «, turns-the wheel A. This, by the pinion, D, turnsthe wheel C, which by a series of wheels and pinions moves the hands. Thesmall one marks the hours, the large one the minutes ; but as the latter doesnot move…
Physics
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