The son of Aglaos, Eratosthenes was born in 276 BC in Cyrene. Now part of modern-day Libya, Cyrene had been founded by Greeks centuries earlier and became the capital of Pentapolis (North Africa), a country of five cities: Cyrene, Arsinoe, Berenice, Ptolemias, and Apollonia. Alexander the Great conquered Cyrene … See more Eratosthenes of Cyrene was a Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. His work is comparable … See more Eratosthenes was one of the most pre-eminent scholarly figures of his time, and produced works covering a vast area of knowledge before and during his time at the Library. He … See more • Aujac, G. (2001). Eratosthène de Cyrène, le pionnier de la géographie. Paris: Édition du CTHS. 224 p. • Bulmer-Thomas, Ivor (1939–1940). … See more Measurement of Earth's circumference The measurement of Earth's circumference is the most famous among the results obtained by Eratosthenes, who estimated that the meridian … See more • Aristarchus of Samos (c. 310 – c. 230 BC), a Greek mathematician who calculated the distance from the Earth to the Sun. • Eratosthenes (crater) on the Moon. • Eratosthenian period in the lunar geologic timescale. See more WebApr 20, 2024 · Eratosthenes ( 276-194 B.C.) the father of “ Geography ,” made the discovery around seventeen hundred years before Columbus. He speculated that the Earth was shaped like a ball based on the stories and myths of Greek sailors before proving his assumption. Pythagoras was one of the originators of the idea; Aristotle provided physical ...

Sieve of Eratosthenes: Method, History & Examples - Study.com

WebMay 19, 2024 · Eratosthenes was an ancient Greek mathematician, geographer, and astronomer. He existed from 276 B.C. until 194 B.C. and is most notable for having the first accurate calculation of the Earth’s … phil robertson lawyer

5.4: Measuring the Earth with Eratosthenes - Physics …

WebJul 31, 2007 · Eratosthenes was born in 276 B.C. in the city of Cyrene which is in the modern-day country of Libya. He apparently studied for a few years in Athens. He studied and spent most of his adult life in Alexandria, where he died in 194 B.C. at the age of 82 years. Some sources claim that Eratosthenes intentionally starved himself to death … WebJune, ca. 240 B.C. Eratosthenes Measures the Earth. Eratosthenes. By around 500 B.C., most ancient Greeks believed that Earth was round, not flat. But they had no idea how big the planet is until about 240 B.C., … WebEratosthenes (cải tiến2 ) Eratosthenes (cải tiến 3) 1000 168 0 0 0. 10000 1229 0 0 0. 100000 9592 0 0 0. 1000000 78498 0 0 0. 10000000 664579 0 0 0. 100000000 5761455 1 1 0. 1000000000 50847534 17 11 8. t shirts printer machine