“同名磁极相互排斥,异名磁极相互吸引”,这是已被人们所公认的磁极间相互作用规律。然而,学生在动手做它的验证实验时,有时会得出异常的结论:同名磁极可相互排斥也可能有相互吸引。实验过程如下:取一枚长磁针支在磁针座的针尖上,待其自由转动静止后,用条形磁铁的一个磁极去靠近磁针的同名磁极,一般情况下它们相互排斥。然而如果使二者很快靠近时,却可发现它们会相互吸引。对于这个现象教师若 “The magnetic poles of the same name are mutually exclusive and magnetic poles of different names attract each other.” This is the law of interaction between magnetic poles that has been recognized by people. However, when students do their validation experiments, they sometimes come to the unusual conclusion that magnetic poles of the same name may be mutually exclusive or attractive. The experimental process is as follows: Take a long magnetic needle on the needle tip of the magnetic needle seat, and after it is free to rotate and stand still, use a magnetic pole of the bar magnet to approach the magnetic pole of the same name of the magnetic needle. Under normal circumstances, they are mutually exclusive. However, if the two are quickly approached, they can be found to attract each other. For this phenomenon teachers