The combination of water and bleach refracts light from the sun and a full moon .

水和漂白剂的混合物能折射来自太阳和满月的光芒。

First , they say , it must approximate a dielectric object so that it is very transparent but still refracts light .

他们说，首先它必须近乎电介质物体，这样，它很透明但仍能使光折射。

They took advantage of the fact that light bends , or refracts , when it moves from one medium to another .

他们利用了这样的一个事实：当光从一个介质进入到另一个介质时，会发生弯曲，或折射。

By analyzing how an object bends or refracts light ( middle ) , image-processing algorithms can deduce its composition .

研究人员通过分析物体折射光线的方式（见中图），利用图像处理运算法可以推断出该物体的构成成分。

Normal rainbows form when light refracts through raindrops , mist , or sometimes even sea spray .

正常的彩虹是由于光通过雨水，雾气，有时甚至海浪的折射所形成。