搜索结果: 1-1 共查到“地球科学史 Travelling along the Silk Road”相关记录1条 . 查询时间(0.109 秒)
Travelling along the Silk Road: A new interpretation of Ptolemy’s coordinates
Travelling along the Silk Road Ptolemy’s coordinates
2015/3/26
Starting from the assumption that Ptolemy worked with a value for the circumference of the Earth that was much too small, his coordinates may be recalculated for the circumference measured by Eratosth...