Calendar

Upcoming Events

Fall Term begins Sept 22, 2014

Fall Term begins Sept 22, 2014

Unless noted, all the courses are 10-weeks in length and cost $530. Every term includes both electives (some of which may only be offered once per year) and regularly scheduled Certificate...

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July 19: FREE Webinar by Austin Coppock - A Gallery of Faces: Images of the Decans

July 19: FREE Webinar by Austin Coppock - A Gallery of Faces: Images of the Decans

Free Webinar on July 19, 2014 1:00 - 2:30 pm Pacific Daylight Time4:00 - 5:30 pm Eastern Daylight TimeThe rich visual imagery of decans   The decans are a division of...

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July 19: Pluto and Saturn Meet Duende: Envy, death, and liberation ($30)

July 19: Pluto and Saturn Meet Duende: Envy, death, and liberation ($30)

July 19 from 9:00 am to 12:00 pm Pacific Time (12-3 pm Eastern)  “All that has black sounds has duende.” Manuel Torre, Flamenco virtuoso. The darkest aspects of experience are ruled by the...

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Classical Horary Astrology (take any time)

Classical Horary Astrology (take any time)

Course available beginning July 2 Primary Instructor: J. Lee Lehman This is not a beginner level course. You will need a background in natal astrology This course can be used as...

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The Key to Classical Methods: Workshop on Essential Dignities (take any time)

The Key to Classical Methods: Workshop on Essential Dignities (take any time)

Instructor: J. Lee Lehman, PhD Independent study. Students have 4 months to complete the assignments. This short course can be taken anytime as an independent class and as a prelude for...

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August 2: FREE Webinar on the Delphic Oracle Astrology Software

August 2: FREE Webinar on the Delphic Oracle Astrology Software

TIME: August 2, 2014 from 1:00 pm - 2:30 pm PDT(4:00 pm - 5:30 pm EDT)   If you have found yourself increasingly interested in Hellenistic techniques, join this webinar! Hank Friedman,...

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August 3: Erin Sullivan Workshop on The Elegance of the Solar System: Retrograde

August 3: Erin Sullivan Workshop on The Elegance of the Solar System: Retrograde

August 3, 2014 Part 1: Inner Planets Retrograde ($39) 9 am - Noon PDT (12 pm - 3 pm EDT) On August 3, Erin Sullivan presents part 1 of the Elegance of...

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Aug 16: FREE Webinar on The Light of the Heavens: An Introduction to Jyotish

Aug 16: FREE Webinar on The Light of the Heavens: An Introduction to Jyotish

August 16, 2014 1:00 pm-2:30 pm Pacific Daylight Time (4:00 pm-5:30 pm EDT) Senay Yangel and Gary Gomes will present an introduction to Vedic (Jyotish) Astrology in this special international webinar...

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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 material in Harmonics is exclusively concerned with music, including setting up exact number ratios for the different modes.

The Harmonics Book III applies his previous exposition of intervals, scales, and ratios to ethics and psychology, and to astronomy and astrology. Unfortunately, some of Book III has been lost to us. In Chapter 9 of Book III, Ptolemy presents the astrological aspects and their ratios to one another. Curiously, in this presentation Ptolemy does not use degree numbers for the aspects. Instead, he considers the twelve zoidia as discrete units and the whole number relationships between them that yield moriai and epimoriai. This discussion might have fit better into the Tetrabiblos Book I, within his treatment of the qualities and relationships between whole zoidia.

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