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What scientific advances were associated with Alexandria during the Ptolemaic period?
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Ptolemaic dynasty
Head of a queen, marble sculpture possibly made in Egypt, Ptolemaic period (305–30 bce); in the Brooklyn Museum, New York. 14 × 12 × 11.5 cm.
During the Ptolemaic period, Alexandria became a preeminent center for scientific and intellectual advancement, fostered by royal patronage and the establishment of the Alexandrian Museum and the Library of Alexandria.12
Significant contributions were made across several disciplines:
- Mathematics: Euclid systematized mathematical knowledge and developed the method of deductive proof from axioms. Archimedes conducted research in physics and mechanics, including the formulation of hydrostatics and the invention of the Archimedes screw. Apollonius of Perga became the leading authority on conics.13
- Astronomy and Geography: Eratosthenes calculated the Earth’s circumference and pioneered a system of latitude and longitude for mapping. He is also credited with creating the armillary sphere and the sieve of Eratosthenes for identifying prime numbers.145
- Medicine: The city’s medical school gained a lasting reputation through figures like Herophilus, who advanced systematic anatomy, and Erasistratus, who identified the heart as the motor of the circulatory system.3