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为什么显微镜能看到微观世界?

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为什么显微镜能看到微观世界?

在16世纪,荷兰著名磨镜师詹森有两个儿子。一天,两兄弟到爸爸的作坊里玩耍,哥哥无意中拿起两块镜片放在铜guan的两端,一看,书上的字母变得好大呀!两兄弟把这件事告诉了詹森,詹森高兴极了,两兄弟帮助父亲制造成功了世界上第一架显微镜。显微镜里靠近wuti那块凸透镜叫wu镜,靠近yan睛那块凸透镜叫目镜。wuti先通过wu镜在两个镜片之间形成第一次放大的实像,这个实像又恰好落到了目镜的焦距以内,这样又把经放大的实像再次放大。所以我们从目镜上往下看,就会看到比实像大得多的虚像。最先的最原始的显微镜就是这么制作成的。今天,随着科技事业的发展,显微镜的制作越来越先进,已经从光学显微镜发展到了电子显微镜,但制作的基本原理仍没有改变。

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