At the other end, the current energizes an electromagnet and this attracts the armature.

在另一端，电流使电磁铁充电，并吸到电枢。

The Large Hadron Collider at Cern is a 27km loop of powerful electromagnets.

欧洲核子研究组织的大型强子对撞机是一个长达27公里的强大电磁线圈。

For you though, you're going to use the electromagnet without the crane.

不过对你来说， 你要使用的是没有机的电磁铁。

These electromagnets will help keep the superhot plasma in the center of a tube.

这些电磁铁将有助于将超热等离子体保持在管子的中心。

And this machine is just an extreme way that we can demonstrate how electromagnets work.

而这台机器只是我们展示电磁铁工作原理的一种极端方式。

One is an electromagnet embedded in a static component, known as a stator.

其中一个是嵌入在件中的电磁铁，这个件被称为定子。

Electromagnets are materials that become magnets in the presence of electricity.

电磁体是在有电的情况下变成磁铁的材料。

This makes electromagnets quite different from permanent magnets.

这使得电磁体与永磁体有很大不同。

We have a ring of iron but on the left side we have an electromagnet.

我们有一个铁环，但在左边我们有一个电磁铁。

Generate this talk using a spinning reaction wheel and an electromagnet that interacts with Earth's magnetic field.

使用旋转的反作用轮和与地球磁场相互作用的电磁铁来生成这次讨论。

Changing the plasma flow would also change the craft's trajectory, at a rate controllable via the electromagnets.

改变等离子流也会改变飞行器的轨迹，其速率可通过电磁铁控制。

This electromagnet is composed of a coil of wire, which uses electrical current to generate a magnetic field.

这个电磁铁由一圈电线组成，利用电流产生磁场。

So let's take a look at that and compare permanent magnets to electromagnets.

让我们看一下并将永磁体与电磁体进行比较。

Electromagnets are typically made of loops of wire and a coil.

电磁体通常由线圈和线圈制成。

But essentially what you do is you take an electromagnet.

但基本上你所做的就是使用一个电磁铁。

Since this is an electromagnet, I could turn it off and the person is going to fall down.

既然这是个电磁铁，我一断电，那个人就会掉下来。

The mouse was just a magnet on wheels essentially, following an electromagnet controlled by the position of the relay switches.

鼠标本质上只是一个装有轮子的磁铁，它跟随一个由继电器开关位置控制的电磁铁移动。

So we could take an electromagnet.

所以我们可以使用一个电磁铁。

This, though, required both high pressure, which is expensive to create, and the electromagnets themselves, which are costly to buy and costly to run.

不过这需要两种高压，成本很高，电磁铁本身的购买和运行成本就很高。

So the reason that you can have things like electromagnets and dynamos is because electricity and magnetism kind of work together.

所以你可以有像电磁铁和发电机这样的东西，是因为电和磁是协同工作的。