And does our own planet owe its survival to this massive comic magnet?

我们地球要感激这个庞大的滑稽的磁体吗？

Well, it's complicated. I mean, he works with lasers and atomic magnets.

挺复杂的，他跟激光和原子磁体打交道。

Inside the magnet, the molecules of Chinese purple became a single magnetic wave.

在磁体内，中国紫的分子变成了单一的磁波。

The Earth has a molten iron core that rotates quickly, turning it into a giant magnet.

地球有一个快速旋转的熔融铁核，把地球变成了一个巨大的磁体。

The Leather Loop comes in a soft, quilted leather that conceals magnets for fastening and adjustment.

皮质回环形表带以柔软的裄缝皮革为材料，内藏磁体，便于收紧及调整。

So what draws scientists like, well, like a magnet to the 45t hybrid?

那是什么让科们像磁铁一样被 45-T 混合磁体所呢？

In fact, the same transition metals that give gems their color can make them drawn to magnets.

事实上，过渡金属元素赋予了宝石颜色，同样使它们被磁体。

Dr Vetrovec intends to perform his version of the trick at atmospheric pressure, and using permanent magnets.

维特威克博士想要在大气压力下使用永磁体来实现他的这种把戏。

I need to believe that noisy magnets can safely take an accurate picture of a growth deep inside my head.

我需要相信嘈杂的磁体可以安全地拍下我脑海深处肿瘤的准确图像。

No, it has to be like a super magnet.

不会 那得是个很大的磁体。

When unpaired electron spins line up parallel to each other, you get ferromagnetism, or a mineral that's an actual magnet.

当未配对的电子自旋互相平行时，你将见到铁磁性，或者一个实际上是磁体的矿物。

Sometimes, a gem that's normally repelled by magnets will have bits of iron inside it, which will make it attracted to magnets instead.

有时，一个通常被磁体排斥的宝石如果含有少量铁元素，反而这会使得它被磁体。

A discovery made here at the national high magnetic field laboratory, home of the 45t hybrid, the world's most powerful magnet.

这项发现在国高磁场实验室中做出 45-T 混合磁体，世界最强的磁铁就坐落于此。

On the other hand, permanent magnets are always on.

另一方面，永磁体始终处于开启状态。

They're building a fusion reactor with these sorts of superconducting magnets right now in the south of France.

他们现在正在法国南部用这种超导磁体建造一个聚变反应堆。

The main component of the composition was the solenoid of the superconducting magnet they were still installing.

组成的主要部件是他们仍在安装的超导磁体的螺线管。

This makes electromagnets quite different from permanent magnets.

这使得电磁体与永磁体有很大不同。

The magnetic field around the Earth is called the magnetosphere, and like a magnet, it has a north pole and a south pole.

围绕着地球的磁场被称为磁层，就像一个磁体拥有一个南极和一个北极。

This is different from a permanent magnet because permanent magnets don't need this wire.

这与永磁体不同，因为永磁体不需要这种电线。

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。