Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 910
assing into the electromagnet B, are regulatedby a standard clock, which itself has been previously regulated by a secondspendulum. At each oscillation of the pendulum there is an arrangement bywhich it opens and closes the current, and thus the armature P beats secondsexactly. To illustrate the… … -899] Electromagnetic Machines. line as far as Birmingham. When the current passes in this wire all theclocks will simultaneously indicate the same hour, the same minute, and thesame second ; for electricity takes an inappreciable time to go from Londonto Birmingham.
Physics
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