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电和磁对生活在现实世界中的人们来说是非常重要的,离开了电和磁,很难想象现实世界会成为什么样子.下面,就让刘老师带我们一起迈入历史的长河,去探索电与磁的奥秘吧.18世纪末,电对每个人都有巨大的吸引力,富兰克林的风筝实验是人人热议的话题.后来,伏打发明了世界上第一个电池,成功地获得了流动的电.以前,人们研究电只能依靠
Electricity and magnetism are very important to people living in the real world, and it is hard to imagine what the real world will be like without electricity and magnetism. Let’s let Mr. Liu take us to the historic river with us Explore the mystery of electricity and magnetism.Electrical and magnetic mysteries of the late 18th century, power for everyone has a great attraction, Franklin’s kite experiment is hot topic for everyone.F later, Vodafone invented the world’s first battery, successfully obtained In the past, people could only rely on the study of electricity