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). https://doi.org/10.1038/020403c0
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DOI: https://doi.org/10.1038/020403c0
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