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为什么看上去水变浅了

更新时间: 2020-09-19 00:00:00     

由于光线的折射原理,水和空气的的密度不尽相同,即介质不同,所以传播速度也不一样。光线由空气倾斜射入水中时,折射角会变小。光线为可逆的,因此从水中向空气中折射之时,恰恰相反,水在肉眼看起来就会变浅,亦为一种虚像。

关键词: 为什么 上去

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