Browsing Tag »Placido under the pole«

The astronomy of primum mobile: Placidean directions under the pole

September 13, 2009

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Since the Antiquity astrology (and prediction) was based on astronomical tables generally divided into three different parts collected together: tables of primum mobile, tables of planetary positions, eclipses; at the beginning of the Renaissance tables of primum mobile were separated from the rest: the most famous of all Regiomontanus’ ones, which the author called “Tables [...]