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Magnes sive, De arte magnetica opus tripartitum

  • 1643
  • Athanasius Kircher
    Cologne: Jodocus Kalcoven, 1643
  • 20 cm H
  • In the Edelstein Rare Book Room
  • Roy G. Neville Historical Chemical Library
  • b1034025


The sunflower clock, which purportedly uses heliotropism to measure time

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