The Earth itself has a magnetic force.

地球本身也有磁力。

Packing 45 Teslas of magnetic force.

拥有 45 拉磁力。

A compass is ruled by the magnetic force of the Earth.

指南针受地球磁力控制。

Your thoughts are like a magnetic force that attracts similar thought patterns that are in harmony with your own.

你思想就像一股磁力，吸引着与你自己思维模式相类似思维模式。

And if the ratio of the electro magnetic force to the strong force wasn't one percent, life wouldn't exist.

而且如果电磁力与强作用力比不是百分之一话，生命就不会存在了。

If you've handled two magnets, you felt magnetic forces, even when the magnets weren't touching each other.

如果您触摸过两块磁铁，即使磁铁没有相互接触，您也会感受到磁力。

But magnetic forces don't affect everything the same way.

但磁力不会以同样方式影响一切。

It creates a magnetic force field around us that deflects that solar wind up and away, making life down here much more enjoyable.

它在我们构建了一个磁力场，抵挡并反射了那种太阳风，让这里生活更快乐。

Magnets will attract or repel each other, and this attraction or repulsion is a magnetic force.

磁铁会相互吸引或排斥，这种吸引或排斥就是磁力。

That's because magnetic forces are non-contact forces, which just means they can affect other objects they aren't even touching.

这是因为磁力是非接触力，这意味着它们可以影响它们甚至不接触其他物体。

In this video, we're going to talk about the magnetic forces between two magnets.

在本视频中，我们将讨论两个磁铁之间磁力。

So the direction of the magnetic force completely depends on the orientation of the magnets.

因此磁力方向完全取决于磁铁方向。

Orientation, though, is just one thing that affects magnetic forces.

然而，方向只是影响磁力因素之一。

The strength of magnetic forces depends on a couple of things.

磁力强度取决于几个因素。

This is because magnetic forces depend on distance.

这是因为磁力取决于距离。

Gravitational, electric, and magnetic forces are all field forces, which means they act over distance and can affect a lot of objects.

引力、电力和磁力都是场力，这意味着它们作用于远距离并且可以影响许多物体。

This gives us more charged particles with magnetic fields in a small space, strengthening the magnetic force.

这让我们在狭小空间内获得了更多带有磁场带电粒子，从而增强了磁力。

The other big factor that affects how strong a magnetic force is... Well, the magnets themselves.

影响磁力强度另一个重要因素......嗯，磁铁本身。

While my drawing isn't amazing, the fact that magnetic forces can levitate a train is.

虽然我画并不令人惊奇，但磁力可以使火车悬浮事实却令人惊奇。

Magnetic force causes similar poles to repel one another, and opposite poles to attract.

磁力使相似磁极相互排斥，相反磁极相互吸引。