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      Knowledge is Power

      Scientific American August 26, 1916

      Perpetual Motion

      The One Phenomenon Which Is Universal and Constant

      • By Charles E. Benham on August 26, 1916

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      More in the August 26, 1916 issue of Scientific American
      • An Improved Dry Cell Battery
      • Pioneer British Electric Freight Railway
      • The Naval Battle of the Skagerrak
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