Each time the magnet is broken, new poles are formed, as indicated in Fig.5.
Each time the magnet is broken, new poles are formed, as indicated in Fig.5.
磁体每折断一次，就有两个新磁极形成，如图五所示。
Each time the magnet is broken, new poles are formed, as indicated in Fig.5.
磁体每折断一次，就有两个新磁极形成，如图五所示。