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奥斯特关于电流磁效应的发现,开启了电磁联系研究的新篇章,引起物理学家对称的思考:能不能利用磁体在导线中产生出电流来?法拉第在1822年的日记里写下了“由磁生电”的设想,并着手实验探究。1831年8月29日法拉第在一个软铁环上绕了两个彼此绝缘的线圈(如图1),其中一线圈连成闭合回路,在导线的下方放置一个小磁针,另一与线圈电池组相连。实验发现:合上开关时,磁针发生偏转;断开开关时,磁针又发生偏转,
Auster’s discovery of the current magnetic effect opens up a new chapter in the study of electromagnetism that has led physicists to think symmetrically: Can magnetism be used to generate electricity in the wire? Faraday wrote down in his 1822 diary, “Magnetically powered” idea, and proceed with the experimental exploration. August 29, 1831 Faraday wound two coils insulated from each other on a soft iron ring (Figure 1). One of the coils was connected to form a closed loop. A small magnetic pin was placed under the lead wire and the other was connected to a coil battery pack Connected. The experiment found that when the switch is turned on, the magnetic needle is deflected; when the switch is off, the magnetic needle is deflected again,