Browse Items (4 total)

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Bonet de Lates was a Provençal physician and astrologer who settled in Rome, where, in addition to acting as physician to Popes Alexander VI and Leo X, he served the Jewish community as a rabbi. He is best known for his invention of the…

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Sacrobosco’s astronomical work, De sphaera, was produced circa 1220 and describes the shape of the world, the movement of the planets, and eclipses according to the geometry of Ptolemy. The work was first printed at Ferrara in 1472; there were…

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Calendar- and almanac-making manuals were commonly used to calculate the solar and lunar Jewish calendar. In the fourth century CE, a fixed calendar was established based on astronomical and mathematical calculations. This calendar is still used, and…

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This is a collection of 38 treatises on astronomy, astrology, and mathematics, including one of León Hebreo, (De coniunctione Saturni et Iovis anni Christi 1345 (On the conjunction of Saturn and Jupiter in the year of our Lord 1345).
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