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      Knowledge is Power

      Scientific American April 02, 1881

      Tyndall's Experiment on Radiant Heat

      • By Geo. M. Hopkins on April 2, 1881

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      More in the April 02, 1881 issue of Scientific American
      • Electrical Fire Indicator of M. G. Dupre
      • Mechanical Inventions
      • Novel Fire Kindler
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