Ptolemy’s Digression, Part 2

By: Joseph Crane Ptolemy’s Harmonics The Harmonics [12] is probably earlier than the Tetrabiblos.[13]  Although Ptolemy is well known for his astronomy and astrology, he was also one of the ancient sources for theories of harmony. The work studies this universal field of knowledge for which music and geometry are considered subsets. Much of the […]

Ptolemy’s Digression, Part 1

Ptolemy’s Digression: Astrology’s Aspects and Musical Intervals Statement of the Problem This essay addresses a problem in the development and continuity of astrology: how do astrologers, past and present, account for the astrological aspects? Aspects are the means by which a planet or position (Ascendant, Lot of Fortune) has contact from another planet or other […]

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