Those telescopes that do not employ reflection use refraction.

那些不利用反的望远镜利用的折。

Is it a) dispersion, b) reflection, or c) refraction?

A. 散，B.反，还 C. 折？

Hmmm, well, I'm not a scientist, so I'll have a guess as c) refraction.

我不家，所以我要猜 C. 折。

Slowing a wave changes its direction, a process called refraction.

放慢光波改变了其方向，这个过程被称为折。

This refraction has a couple of interesting results.

这种折可以导致几个有趣的结果。

And when light hits these layers, it bends through a process called refraction.

当光线照到这些层时，它会通过一个叫做折的过程弯曲。

The problem here is that the water actually changes the refraction of light.

问题在于，水实际上改变了光的折。

Now we're going to talk about refraction of light.

今天我们要讲的光线的折。

So instead, many researchers are trying to reroute wavelengths around an object using refraction.

因此，许多研究人员正尝试利用折原理，使光线绕过物体，从而改变其传播路径。

The discovery of negative refraction kicked off the modern wave of invisibility research.

负折现象的发现，掀起了现代隐身技术研究的新浪潮。

But to see if this was true for refraction would be difficult.

但要确定折否如此会很困难。

All the shadows and light refractions, even the reflections in a character's eye.

所有的阴影和光线折，甚至角色眼中的反。

Like polarization, how scattering works and how an index of refraction works.

像偏振一样，散如何工作的以及折率如何工作的。

It is only on that bent surface where we see that major refraction.

只有在弯曲的表面我们才能看到强烈的折。

And refraction occurs when light leaves a medium, too.

光离开时会发生折 中间也。

This phenomenon, of light rays changing direction at the interface between media, is called refraction.

这种现象，即光线改变方向 当它从一种介质转移到另一种介质时，称为折。

And this notion, you might have heard people call it refraction.

这个概念，你可能听过人们称之为折。

And we talk about that in another video, and we call that refraction.

我们在另一个中讨论了这一点，我们称之为折。

They are bending like that so we get refraction.

它们这样弯曲为了产生折。

And so we do not see that refraction.

所以我们看不到折。