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为什么铅笔伸jinshui就像是断了?_数理化之谜 - 棒子小说网
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为什么铅笔伸jinshui就像是断了?

本站新(短)域名:xiguashuwu.com

为什么铅笔伸进水就像是断了?

我们知dao光是沿着直线传播的。如果光从两zhong不同的wu质中通过,那么在这两zhongwu质jiao界的地方,光的传播方向会发生改变,这叫zuo光的折she1。光从空气进入水里,因为水比空气的密度大得多,于是,在水和空气相jiaochu1发生了折she1,不再沿着原来的方向传播。我们把铅笔伸进水中,我们见到的水下那bu分铅笔,是已经发生了折she1后的光线里的铅笔。这gu光线当然不会与水面的光线成一条直线,所以铅笔虽然没有断,而看起来却像是断了一样。

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