A Complete Collection of 100000 Whys
Fav十万个为什么
为什么棱镜能分解白光？
棱镜能分解白光主要是因为光的折射、不同频率的光折射率不同、以及光的色散现象。
1、光的折射。当光线从一种介质斜射入另一种介质（如从空气进入玻璃）时，会发生折射现象，即光的传播方向发生改变。
2、不同频率的光折射率不同。白光是由多种不同频率（颜色）的光组成的，不同频率的光在通过棱镜时，折射率不同，导致它们的折射角不同。
3、光的色散现象。由于不同频率的光折射角不同，白光通过棱镜后，各种颜色的光会按照不同的角度分散开来，形成光谱，这就是光的色散现象。
总结：棱镜能分解白光，主要是因为光的折射、不同频率的光折射率不同以及光的色散现象。
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