Around the start of the 17th century, there was a famous manufacturer of optics, called Hans. One day, his disciple took a piece of freshly shaped concave lens and a convex lens to play, and when he put the two lenses together, he found that this can be used to view things from far by making them clearer, as though one was standing right in front of the object. things were magnified, they became bigger and cleaerer. When Hans heard about it, he realised that this is a great discovery. he made a metal tube and put the two lenses at either sides of the tube, thus making the first telescope.
英语翻译约在十七世纪初期,荷兰有位名叫汉斯的眼镜制造商,有一天他的徒弟无意中拿取磨好的一片凹透镜和一片凸透镜玩时,当他把
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