阿基米德认为地球是圆球状的,并围绕着太阳旋转,这一观点比
哥白尼的“日心地动说”要早一千八百年。限于当时的条件,他并没有就这个问题做深入系统的研究。
在
古代希腊,思想是非常开放和自由的,阿基米德增经用球体模拟出过
月食和日食。所以他认为地球是圆的!
The Sandreckoner is a remarkable work in which Archimedes proposes a number system capable of expressing numbers up to 8 1063in modern notation. He argues in this work that this number is large enough to count the number of grains of sand which could be fitted into the universe. There are also important historical remarks in this work, for Archimedes has to give the dimensions of the universe to be able to count the number of grains of sand which it could contain. He states that Aristarchus has proposed a system with the sun at the centre and the planets, including the Earth, revolving round it. In quoting results on the dimensions he states results due to Eudoxus, Phidias (his father), and to Aristarchus. There are other sources which mention Archimedes' work on distances to the heavenly bodies. For example in [59] Osborne reconstructs and discusses:-
...a theory of the distances of the heavenly bodies ascribed to Archimedes, but the corrupt state of the numerals in the sole surviving manuscript [due to Hippolytus of Rome, about 220 AD] means that the material is difficult to handle.
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