Circumference of the Earth. The Science and Technology Museum Leonardo da Vinci. Milan. Italy.

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Circumference of the Earth. Eratosthenes (250 BC) calculated the circumference of the Earth by measuring noontime shadows at two localities of different latitude. Leonardo da Vinci (1452-1519) developed a novel way to measure the area of a circle using the rotation of wheel half the thickness of its radius. The Science and Technology Museum Leonardo da Vinci. Milan. Italy.

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Keywords: age, astronomer, astronomy, calculation, calculations, circumference, copy, da, earth, geodesy, geographer, geography, history, leonardo, mathematical, mathematician, mathematics, modern, renaissance, science, vinci