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      Cover image for The Rumford Spectroheliograph of the Yerkes Observatory
      Paperback
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      The Rumford Spectroheliograph of the Yerkes Observatory

      George Ellery 1868-1938 Hale, Ferdinand 1869- Ellerman

      The Rumford Spectroheliograph was a groundbreaking device used to study the sun's magnetic field and solar activity. In this book, Ellerman and Hale describe the development and use of the…

      $49.99

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