请教各位,按照课文,如果一条磁铁被切割,南和北的分布如下: Cutting a magnetAn interesting characteristic of magnets is that when you cut a magnet into parts, each part will have both N and S poles.
Bar magnet cut into three parts Attraction and repulsionMagnets strongly attract iron, nickel and cobalt, as well as combinations or alloys of these metals.
Also, unlike poles of two magnets will attract, but like poles will repel. Thus, N and S attract, while S and S will repel each other.
既然,同极相拒,异极相吸。。。。。。
照理讲,被切割后,应该相吸才对。。。。。。
但为什么,实况是。。。它们会相拒呢?
(如果你有类似的切割或折断磁铁的经验,你会发现它们立刻会互相推开)
有谁可以帮帮忙,这要如何解释????
谢谢。。。。。。 |