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Alexandria in the Nile River, the center was one of cultural trade. There are magnificent museums, libraries, and large pool of talent, is the world as "the wisdom of all." Archimedes studying and living here for many years, worked with a lot of academics close contacts. During his study of mathematics, mechanics and have a deep interest in astronomy. In his study of astronomy, the invention of the planet with a water-driven device, and used it to simulate the sun, planets and moon and show the phenomenon of eclipses. To overcome the difficult problem of the Nile river water irrigated land, he invented a cylindrical spiral pumping device, later generations called "Archimedes screw."
】 【Scientific achievements
Archimedes in mechanics the most outstanding achievements.
Geometry aspects:
2, he is the scientific study of the first person pi. He proposed using inscribed and circumscribed polygons polygon number of sides increased, with an area close to the method of gradually seek pi. He calculated the circumference size range: 223/71
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