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      Knowledge is Power

      Scientific American June 08, 1918

      The Pyranometer

      An Instrument for Measuring Sky Radiation

      • By C. G. Abbot, L. B. Aldrich on June 8, 1918

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      More in the June 08, 1918 issue of Scientific American
      • Detecting Organic Impurities in Sands
      • Mineral Wealth of Alsace-Lorraine
      • The Electroculture of Crops
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