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MATHEMATICIAN, ASTRONOMER, PHYSICIST
PHILIPPUS OF OPUS (fl. 4th century BC)
Life
A native of Opus (or Medma) in Locris (central Greece), Philip was a disciple of Plato and a contemporary of Eudoxus. He is cited by Vitruvius, Stobaeus, Eudemus, Diogenes Laertius, Suidas and Stephen of Byzantium.
Work
His writings, which survive only in fragments in other writers, include:
MATHEMATICS:
"Arithmetic"
"On polygonal numbers"
"Circles"
"Means"
ASTRONOMY:
"Epinomis": A treatise of particular importance for the study of Platonic theories of astronomy and physics. Published after the death of Plato.
"On the distance of the sun and the moon"
"On lunar eclipses"
"On the size of the sun and the moon"
"On the planets"
"Interpretation of Pythagorean astronomy"
PHYSICS:
"On time"
"Optics": 2 books
"Enoptrics": 2 books
"The rainbow as a phenomenon of diffraction"
METEOROLOGY:
"On the winds"
"On lightning"
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