Science Life

Who first made the lightbulb?

作者：21ST

HERE’S something that might surprise you. Thomas Edison did not invent the lightbulb (灯泡)! He did, however, make the first useful one.Joseph Swan of England made the first lightbulb in 1878....

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二尊享卡用户，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。