The magnetic field strength1cm from a unit magnetic pole.
距单位磁极厘米处的磁场强度。
There is a force field around the arbitrary magnetic pole.
在任一个磁极的周围有一个力场。
So this is one of the magnetic poles and this is the other magnetic pole.
这是另一个磁极，一个磁极和。
One of you asked this question. “Does a magnetic compass point to the North Pole?”
前段时间有观众向我们提问：“罗盘的指针真的指向北极吗？”
This means that the magnetic North Pole changes place with the magnetic South Pole.
这意味着磁北极的变化与南极磁场发生。
The North Pole has a strong magnetic force.
北极具有强大的磁力。
The needle of a magnetic compass points to the magnetic North Pole.
磁性罗盘上的指针指向北方磁极。
And Why can't we find an isolated magnetic north or South Pole?
为什么我们找不到单独存在的南磁极或北磁极的磁极呢？
The action of the negative pole of a magnetic needle is just as real as the action of the positive pole .
这个效应表明，有一种垂直于圈平面的力作用在磁极上。
The action of the negative pole of a magnetic needle is just as real as the action of the positive pole.
一根磁针的磁极作用，无论正负都是一样的真实。
One of you asked this question. "Does a magnetic compass point to the North Pole?"
前段时间有观众向我们提问：“罗盘的指针真的指向北极吗？”
One of you asked this question. "Does a magnetic compass point to the North Pole?"
前段时间有观众向我们提问：“罗盘的指针真的指向北极吗？”
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