Callippus — or Calippus (Greek: Κάλλιπος; ca. 370 BC ndash;ca. 300 BC) was a Greek astronomer and mathematician.He was born at Cyzicus, and studied under Eudoxus of Cnidus at the Academy of Plato. He also worked with Aristotle at the Lyceum, which means that … Wikipedia
Meton of Athens — (Greek: Μέτων ὁ Ἀθηναῖος; gen.: Μέτωνος) was a Greek mathematician, astronomer, geometer, and engineer who lived in Athens in the 5th century BC. He is best known for calculations involving the eponymous 19 year Metonic cycle which he introduced… … Wikipedia
Dion of Syracuse — Dion (Δίων 408–354 BC), tyrant of Syracuse in Sicily, was the son of Hipparinus, and brother in law of Dionysius I of Syracuse. Contents 1 Family 2 Dionysius the Elder s closest adviser 2.1 The arrival of Plato … Wikipedia
calendar — calendrical /keuh len dri keuhl/, calendric, calendarial /kal euhn dair ee euhl/, calendarian, calendaric, adj. /kal euhn deuhr/, n. 1. a table or register with the days of each month and week in a year: He marked the date on his calendar. 2. any … Universalium
Eudoxus of Cnidus — ▪ Greek mathematician and astronomer Introduction born c. 395–390 BC, Cnidus, Asia Minor [now in Turkey] died c. 342–337 BC, Cnidus Greek mathematician and astronomer who substantially advanced proportion theory, contributed to the… … Universalium
Ptolemy — For others with Ptolemy... names, and history of those names, see Ptolemy (name). Ptolemy An early B … Wikipedia
Ancient Greece — The Parthenon, a temple dedicated to Athena, located on the Acropolis in Athens, is one of the most representative symbols of the … Wikipedia
List of ancient Greeks — This an alphabetical list of ancient Greeks. These include ethnic Greeks and Greek language speakers from Greece and the Mediterranean world up to about 200 AD. compactTOCRelated articles NOTOC A*Acacius of Caesarea bishop of Caesarea… … Wikipedia
Metonic cycle — Heliocentric Solar System In astronomy and calendar studies, the Metonic cycle or Enneadecaeteris (from Greek words for nineteen years) is a period of very close to 19 years which is remarkable for being very nearly a common multiple of the solar … Wikipedia
Oenopides — is also the name of a lunar crater Oenopides of Chios (Greek: Οἰνοπίδης) was an ancient Greek mathematician (geometer) and astronomer, who lived around 450 BCE. He was born shortly after 500 BCE on the island of Chios, but mostly worked in Athens … Wikipedia
