Those telescopes that do not employ reflection use refraction.

那不利用反射的望远镜利用的是折射。

This refraction has a couple of interesting results.

这种折射可以导致几个有趣的结果。

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

是 A. 散射，B.反射，还是 C. 折射？

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

放慢光波改变了其方向，这个过程被称为折射。

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

今天我们要讲的是光线的折射。

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

当光线照射到这层，它会通过个叫做折射的过程弯曲。

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

我不是学家，所以我要猜 C. 折射。

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

我们在另个视频中讨论了这点，我们称之为折射。

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

这个概念，你可能听过们称之为折射。

How does that change the law of refraction?

这怎么能改变折射定律呢？

Standard stuff - carbon date the cork, run a molecular test on the wax, spectroscopic refraction on the glass.

规程序根据碳含量鉴别软木塞年份，给蜡做分子测试，分光镜折射来测试玻璃瓶身。

Technically, this changes the index of refraction, but in plain English that means blue light is no longer bent the right way.

从术上讲，这会改变折射率，但用简单来说，这意味着蓝光不再以正确的方式弯曲。

And when a ray enters a medium with an increased index of refraction, the angle of refraction decreases.

当具有高折射率的介质光线通过，折射角减小。

In other words, the higher the index of refraction, the smaller the angle.

换句话说，折射率越高， 角度越来越小。

And refraction occurs when light leaves a medium, too.

光离开会发生折射 中间也是。

Snell’s Law says that angles of refraction are determined by the index of refraction for each medium and the angle of incidence.

斯涅尔定律指出，折射角由每种介质的折射率和入射角决定。

Those telescopes that do not employ reflection use refraction. They have a system of lenses, an idea first used to look at the stars by Galileo.

那不利用反射的望远镜利用的是折射。他们有透镜系统。利用透镜系统的想法最早是伽利略用来观测星星的。

The angle of refraction inside the glass would be less than theta one, since the index of refraction of glass is greater.

玻璃内部的折射角小于theta1，因为玻璃的折射率更大。

Sometimes, those refraction reflectors are in the farthest outer layer of the beetle's body, or they can be buried a little bit deeper inside.

有候，这折射反射器在甲虫身体最远的外层，或者它们可能埋得更深点。

We learned about how refraction works with converging and diverging lenses.

我们了解了折射如何与 近距镜片和间隔镜片。