Electricity on Board Warships. Transmission of Power. A Telephone Signal Needed. Electrical CalculationsI. Trying the Air Guns on the Vesuvius. The Head and the Brain., scientific american, 1890-03-22

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Electricity on Board Warships. Transmission of Power. A Telephone Signal Needed. Electrical CalculationsI. Trying the Air Guns on the Vesuvius. The Head and the Brain., scientific american, 1890-03-22

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