祖冲之,字文远,河北省涞水县人(公元429年~公元500年),是我国古代杰出的科学家。他编制的《大明历》,是南北朝时期最精密的历法;他推算出的圆周率,能够精确到小数点后七位,是当时世界上最优秀的成绩;他设计制造的水碓磨、铜制机件传动的指南车、千里船、定时器等都对当时的工农业生产与社会进步起到了巨大的推动 Zu Chongzhi, the text far, Huangshui County, Hebei Province (AD 429-500 AD), is an outstanding scientist in ancient China. His “Daming Calendar” was the most sophisticated calendar in the Northern and Southern Dynasties. His calculated pi rate can be accurate to seven places after the decimal point, which was the best in the world at that time. He designed and manufactured Shuigou mill and copper parts Transmission of the guide car, Trinidad and ship, timer and so on were the industrial and agricultural production and social progress has played a tremendous impetus