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      Knowledge is Power

      Scientific American January 20, 1917

      A Rotary Interrupter for Large Induction Coils

      Complete Technical Description, with Instructions for Building

      • By Louis B. Laruncet on January 20, 1917

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      More in the January 20, 1917 issue of Scientific American
      • Canada
      • Problems of Human Nutrition
      • Vibrations, Waves and Resonance—I
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