Culture and Discovery

Where no tree has gone before

作者：21ST

SIR Isaac Newton’s famous apple tree has left gravity behind.

Flying aboard US space shuttle Atlantis last Friday was a 10cm piece of the tree from which an apple fell nearly 350 years ago and inspired Newton to discover the law of gravity.

点击阅读全文

对本期电子报订户、有效期内的VIP教师会员和本学期高三尊享卡用户，我们开放所有内容：
如果您拥有以上权限，请点这里登录；
订阅电子报，请点这里；
激活VIP教师卡，请点这里；
激活21英语尊享卡，请点这里。