This effect occurs because the magnetism in the material is generated by innumerable magnetic atoms, like a host of tiny bar magnets, all roughly aligned but randomly fluctuating like compass needles being jiggled about.
This effect occurs because the magnetism in the material is generated by innumerable magnetic atoms, like a host of tiny bar magnets, all roughly aligned but randomly fluctuating like compass needles being jiggled about.
这是因为材料的磁性是由无数个磁性原子所产生的，就像一群微小的块状磁铁，它们虽大致排齐但仍不规则，就像罗盘的指针一样不停晃动。