单词：Eratosthenes
音标：[,erә'tɔsθini:z] ；
埃拉托色尼(公元前三世纪的希腊天文学家、数学家和地理学家)
n Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)
词型变化：名词复数形式 : eratostheness
单词：Eratosthenes 相关文章
How big a stick would you need to measure the planet? A thousand miles long? A million? How about three feet? That ought to be enough to do it, as an ancient Alexandrian man named Eratosthenes figured out. Eratosthenes was a multi-talented man who li
发表于:2019-02-23 / 阅读(60) / 评论(0)
英语时差8，16
英语时差8，16
On our last program we discussed a simple experiment run by an Alexandrian named Eratosthenes in the third century B.C. By noting that, at the same time of day, sticks in the ground cast different-length shadows depending on whether they were in a no
发表于:2019-02-23 / 阅读(55) / 评论(0)
英语时差8，16
英语时差8，16