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Biografía de Eratóstenes: Contribuciones Científicas by ScribdTranslations is a document available to read on EtoBox.

Eratosthenes was a versatile Greek scientist from the 3rd century BC who made significant contributions in various fields such as astronomy, geography, and mathematics. He directed the Library of Alexandria and calculated the circumference of the Earth by measuring the difference in shadows in two cities on the same day, which demonstrated that the Earth was not flat. He also accurately calculated the distance to the Moon and the Sun as well as the tilt of the ecliptic.

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