The mobile electrons are collected by thin metal fingers at the top of the cell.

这些子被太阳能池 顶部的细小金属导体收集。

And all those free electrons are great at conducting electricity.

而那些子有很好的导性。

This was an important event! Free electrons are really really good at absorbing photons, absorbing light.

这是一个大事件！子非常擅长吸收光子，吸收光。

Sheldon, I was up all night using the new freeelectron laser for my Xray diffraction experiment.

谢尔顿，我整晚都在用新子激光仪做我的X光衍。

The free electrons in metals are especially good at this vibrating-to-match-visible-light thing.

子和金属产生的振荡与可见光长匹配。

So we’ve got insulators and conductors with free electrons moving around in them.

所以我们有绝缘体和导体， 其中有子在其中移动。

And as a result these things don't have a lot of free electrons.

因此这些东西没有很多子。

And as we pair those electrons, now we don't have those free electrons anymore.

当我们把这些子配对时, 现在我们不再有那些子了。

These extra free electrons want to move as far away from one another as possible.

这些额外的子会尽可能多地离开 彼此可能。

And so if we have free electrons it's easy for them to flow through that metal.

因此, 如果我们有子, 它们很容易流过金属。

We'll begin at the top with a device called a field emission source which generates free electrons.

我们将从顶部开始，使用一种称为场发源的设备来生成子。

And when we talk about an object having an overall positive charge, we mean it’s missing free electrons.

当我们谈论一个整体带正荷的物体时， 我们的意思是它缺少子。

To the free-electron laser at night.

使用子激光器的权限。

This imbalance can be created and resolved in lots of different ways.

它缺乏子。这个 不平衡可能发生或调整很多。

As these free electrons rush from one electrode to the other, they collide with more neon atoms, causing them to ionize as well.

当这些子从极的一端涌向另一端，它们会与更多的氖原子碰撞，并使身也离子化。

But what causes these charged particles to move in the first place?

和子穿过它，但是什么？ 这些带粒子运动的原因？

Sheldon, I told you, I only have access to the free electron laser at night. I can't drive you for the next few weeks.

谢尔顿我跟你说过了，我只有晚上才能用子激光仪。接下来几个礼拜我都不能开车送你了。

And the amount of dispersion tells you how many free electrons that radio wave had to pass through to reach the detector.

色散量告诉您无线必须通过多少个子才能到达检测器。

This type of star was known to be very dense and made of compact, degenerate matter composed of atomic nuclei and free electrons.

这种星体以极高密度著称，致密、退化的物质构成，这种物质主要原子核和子组成。

To figure this out, let's imagine we have a conductive sphere with a net negative charge meaning it has too many free electrons.

为了找出答案，想象一个带有总荷的携带球 负的，意味着它有额外的子。