Search Results: Eudoxus of cnidus

Aristarchus of Samos (l. c. 310 - c. 230 BCE) was a Greek astronomer who first proposed a heliocentric model of the universe in which the sun, not the earth, was at the center. Although his theory was noted by other thinkers of his time...

Ancient Greek astronomy was the study of the universe to understand how it functioned and why apart from the established theistic model that claimed all things were ordered and maintained by the gods. Ancient Greek astronomers relied on observation...

Semiramis is the semi-divine Warrior-Queen of Assyria, whose reign is most clearly documented by the Greek historian Diodorus Siculus (l. 90-30 BCE) in his great work Bibliotheca Historica ("Historical Library") written over thirty years...

Pausanius (l. 110-180 CE) was a geographer and historian who traveled extensively, taking notes on points of interest, then wrote on them in guide books which could be used by tourists visiting the sites described. His works have long been...

Euclid of Alexandria (lived c. 300 BCE) systematized ancient Greek and Near Eastern mathematics and geometry. He wrote The Elements, the most widely used mathematics and geometry textbook in history. Older books sometimes confuse him with...

Hipparchus of Nicea (l. c. 190 - c. 120 BCE) was a Greek astronomer, geographer, and mathematician regarded as the greatest astronomer of antiquity and one of the greatest of all time. He is best known for his discovery of the precession...

Ptolemaic Egypt was a naval power that exerted influence throughout the Eastern Mediterranean from its foundation in 330 BCE until Cleopatra's defeat by Augustus at the Battle of Actium in 30 BCE. The Ptolemaic Kingdom produced some of the...

Philolaus (l. c. 470 to c. 385 BCE) was a Pythagorean philosopher who claimed that fire was the first cause of existence and heat the underlying source of human life. He is best known for his pyrocentric model of the universe, which replaced...

The Lighthouse of Alexandria was built on the island of Pharos outside the harbour of Alexandria, Egypt c. 300 - 280 BCE, during the reigns of Ptolemy I and II. With a height of over 100 metres (330 ft), the lighthouse was so impressive that...

Greek mathematics, the study of numbers and their properties, patterns, structure, space, apparent change, and measurement, is said to have originated with Thales of Miletus (l. c. 585 BCE) but was clearly understood during the periods of...