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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Lonely night, the boundless world, there will always be a gleam of light refraction for you, slowly forget the past.

寂寞的黑夜里，无边的世界，总会有一线曙光为你而折射，慢慢的忘记过去。

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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