Refraction of light gives the above results.

光的折射会产生上述的结果。

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Formed by refraction of light through a prism. Used of a spectrum of light.

由棱镜形成的光通过棱镜被折射而形成各种颜色的。

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Having one direction along which double refraction of light does not take place. Used of a crystal.

单轴晶体的有一个方向的，沿此方向不发生光的双折射。用于晶体。

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The flash itself is actually a second image of the sun, caused by refraction of its light through the layer of air closest to the sea.

ECONOMIST: In a flash

This refraction eliminates both the red end of the spectrum (red light is not bent enough by the air layer to form part of the second image) and the blue frequencies (which are scattered away: this selective scattering is why the sky is blue).

ECONOMIST: In a flash