在一次实验课上,有一位学生发现了一种磁极间的异常现象,“同名磁极相互吸引”。实验过程是这样的：把一根较长的小磁针放在磁针座的针尖上,待其静止后,用条形磁铁去接近小磁针的同名磁极,在一般情况下它们是相互排斥的,可是当条形磁铁与小磁针靠得很近时,它们会发生相互吸引。我们知道奥斯特发现电流周围存在磁场后,安培为了解释磁铁的磁场产生的原因,根据电流产生磁场,提出了“分 In an experimental class, one student discovered an anomalous phenomenon between magnetic poles. “The magnetic pole of the same name attracts each other.” The experimental process is as follows: Put a long small magnetic needle on the needle tip of the magnetic needle holder. After it is stationary, use a bar magnet to approach the magnetic pole of the same name of the small magnetic needle. Under normal circumstances, they are mutually exclusive. When the bar magnets and the small magnetic needles are in close proximity, they will attract each other. We know that after Oster discovered that there was a magnetic field around the current, Ampere proposed a “point-by-point” based on the current generated magnetic field in order to explain the magnetic field generated by the magnet.