1 янв 279 г. до нашей эры - Erasthosenes
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Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. He invented the discipline of geography, including the terminology used today. Eratosthenes calculated the circumference of the Earth with out leaving Egypt
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