This phenomenon occurs above the magnetic poles in the Northern and Southern Hemispheres.

这种现象发生在北半球和南半球的磁极之上。

The last polarity reversal took place some 770,000 years ago.

最近一次磁极性倒转发生在大约77万年前。

This phenomenon occurs above the magnetic poles in the Northern and Southern hemisphere.

这种现象发生在北半球和南半球的磁极上方。

The hydrogen then flows toward the white dwarf's magnetic poles.

然后氢气流向白矮星的磁极。

A second, intensifying blob below Siberia is pulling the pole away.

西伯利亚下另一个不断加强的液水团正在将磁极拉远。

I've gone to the magnetic North Pole on a dog sled.

我坐着雪橇犬拉的爬犁到过北磁极。

The magnetite likely plays a role in orienting sea turtles to Earth's magnetic poles, similar to a compass.

磁铁矿可能在将海龟定向到球磁极方面起作用，类似于指南针。

You had a jet of plasma traveling very fast that impacted on the magnetopoles-that's the boundary of our magnetosphere.

移动速度极快的等离子体射流撞击磁极——也球磁层的边界。

" There's clear evidence from the volcanic rocks of a major excursion happening at about 795,000 years ago."

“来自火山岩的明确证据表明，磁极在大约79。5万年前发生过一次大偏移。”

Since Earth rotates as a solid, our magnetic field is simple, we have two poles: North and South.

既然球作为一个固体自转，我们的磁力很简单，有两个磁极，北极和南极。

But imagine if instead of two poles you had 1 to 10 million. This is what happens on the Sun.

但想象一下如果你不只有2极，而有1百万或1千万个磁极的情景。而太阳上这样。

A middle layer of nickel, which gives the bots magnetic polarity, so they can be pulled through wastewater with magnets.

中间的镍层提供磁极性，这样在磁力作用下机器人可以从废水中脱离。

They found that the reversal took about as long as many scientists previously believed it did-just a few thousand years.

他们发现，磁极倒转所需时间与许多家之前认为的一样长——只需要几千年。

This magnetic concentration forms vortexes that radiate beams from the magnetic poles.

这种磁场集中形成了漩涡，从磁极辐射出光束。

Can we predict the Earth's magnetic field and when it might  flip?

我们能否预测球磁场的变化及何时可能发生磁极反转？

Jupiter's magnetic poles, like Earth's, aren't aligned with its geographic poles.

木星的磁极与球类似，并不与其理极点对齐。

That means its magnetic and rotational  poles are not at all in the same place.

这意味着它的磁极和旋转极完全不在同一位置。

As mentioned earlier, the magnetic poles of Earth are not fixed.

如前所述，球的磁极并非固定不变。

So, by definition, Now, remember, like poles will do what?

所以，根据定义，现在记住，同名磁极会怎样？

That's all about the orientation of magnetic poles and fields.

这些都关于磁极和磁场方向的内容。