What is meant by light refraction?

光的折射是什么？

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The rainbow looks curved. These are some examples of light refraction.

彩虹看起来是弯曲的。这是一些光的折射的例子。

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The shift method presented recently is a flume wave measurement method based on light refraction and Hilbert transform.

最近提出的偏移算法是一种基于光线折射和希尔伯特变换的水槽波浪测量方法。

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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

"Light in transmission, reflection and refraction as it is perceived, " as he states on his website, inspires all of his design work.

WSJ: Robert Zimmer | Where Theory and Practice Make Perfect | Cultural Conversation by Joel Henning

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