折射
拉物理学中，折射是指波拉穿越介质或经历介质个渐次变化辰光传播方向上个改变。光个折射是最容易观察个折射现象，弗过其他像声音搭海浪也侪会有折射个性质。而一个波个折射程度取决于波速个变化量，还有初始行进方向搭波速变化方向间个夹角。
光个折射遵守斯涅尔定律。
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