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

这种现象发生在北和南之上。

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

最近一次地性倒转发生在大约77万年前。

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

这种现象发生在北和南上方。

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

然后氢气流向白矮星。

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

我坐着雪橇犬拉爬犁到过北。

Because Earth behaves like it has a giant bar magnet in it, and your compass needle will point north towards Earth's magnetic pole.

因为地内部就像有一个巨大形铁，而你指南针会向北指向地。

The Pioneer plaque gives a hint in the form of a basic diagram of a hydrogen atom, the magnetic polarity of which flips at regular intervals, with a frequency of 1,420MHz.

先驱牌匾以氢原子基本图形式给出了一个提示，氢原子按一定间隔翻转，频率为1420mhz。

For a better estimate, scientists used more than a decade's worth of Hubble data to track the movement of Uranus's auroras, which helped them zero in on the actual location of the planet's magnetic poles.

为了更精确地估算， 科学家们利用了超过十年哈勃数据来追踪天王星光移动，这帮助他们准确定位了该行星实际位置。

A new study models how a gigantic, morphing blob of liquid iron in Earth's outer core underneath the Canadian Arctic is losing its grip on the North magnetic pole.

一项新研究模拟了加拿大北下地外核中一个巨大变形液态铁团如何失去对北控制。

The deranged needles would mark contradictory directions as we approached the southern magnetic pole, which doesn't coincide with the South Pole proper.

它那乱摇乱晃针，当船上近不能跟地南方相混同南圈时候，指出矛盾相反方向。

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

但是想象一下如果你不是只有2，而是有1百万或1千万个情景。而太阳上就是这样。

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

中间镍层提供性，这样在力作用下机器人可以从废水中脱离。

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

移动速度快等离子体射流撞击——也就是地层边界。

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

铁矿可能在将海龟定向到地方面起作用，类似于指南针。

Because the needle of a compass is magnetised, it's attracted to the magnetic pole – the points near the North and South Poles where the Earth's magnetic field is concentrated.

因为指南针指针是有性，所以它被吸引。地在北和南附近，那里力最强。

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

西伯利亚地下另一个不断加强液态水团正在将拉远。

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

既然地作为一个固体自转，我们力就很简单，有两个，北和南。

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

“来自火山岩明确证据表明，在大约79。5万年前发生过一次大偏移。”

On Earth you can use a compass – an instrument with a magnetic needle that moves to point north, that is towards to the magnetic pole – a point near the North or South Poles where Earth's magnetic field is strongest.

在地上，你可以使用指南针“compass”，即一种带有针仪器。针永远指向北方，也就是指向“magnetic pole”。地在北和南附近，那里场最强。

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，倒转所需时间与许多科学家之前认为一样长——只需要几千年。