The Selenic Shadowdial or the Process of the Lunation. Illustration in Athanasius Kircher's book "Ars Magna Lucis et Umbrae" (The Great Art of Light and Shadow), (Rome, Scheus, 1646). Engraving of this version by P. Miotte. Athanasius Kircher (1602-1680) was a 17th-century German Jesuit scholar and polymath who published around 40 major works, most notably in the fields of "Oriental studies," geology, and medicine.

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Selenic Shadowdial, Lunar Chart, 1646

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