Electric Clocks

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Abstract

THE various contrivances for electric clocks all depend on producing contacts with the pendulum, which is confessedly undesirable; and they nearly all produce these contacts when the pendulum is at rest at the highest point, which is the worst position.

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PETRIE, W. Electric Clocks. Nature 20, 403–404 (1879) doi:10.1038/020403c0

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