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Eratosthenes |
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Eratosthenes (ĕrətŏs`thənēz), c.275–c.195 B.C., Greek scholar, b. Cyrene. A pupil of Callimachus Callimachus, fl. c.280–45 B.C., Hellenistic Greek poet and critic, b. Cyrene. Educated at Athens, he taught before obtaining work in the Alexandrian library. There he drew up a catalog, with such copious notes that it constituted a full literary history. ..... Click the link for more information. in Athens, he became (c.240 B.C.) head of the library at Alexandria. Known for his versatility, he wrote poetry and works (most of them lost) on literature, the theater (notably on ancient comedy), mathematics, astronomy, geography, and philosophy; he also drew a map of the known world and evolved a system of chronology. Especially noted as an astronomer, he is credited with measuring the circumference and tilt of the earth and the size and distance from the earth of the sun and the moon. Eratosthenes ?276--?194 bc, Greek mathematician and astronomer, who calculated the circumference of the earth by observing the angle of the sun's rays at different places How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Soon Eratosthenes disappeared under the horizon without the projectile being sufficiently near to allow close observation. |
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