How to judge the magnetic pole state reversal and demagnetization phenomenon of Spherical magnet?

To determine the magnetic pole status of a Spherical magnet, it can be identified through a simple method. Typically, one end of a Spherical magnet will be marked with a mark or logo that can be used to distinguish the magnetic pole status of the magnet. If there are no markings, you can use a small ferromagnetic object, such as a small needle or iron filings, and observe the direction of movement of the magnet when you bring it close to the object to determine the state of the magnet's poles.

To identify magnet reversal and demagnetization, you can proceed by following these steps:

1. Reversal phenomenon: If you find that the magnetic direction of a Spherical magnet has changed, that is, the original magnetic direction is no longer valid, this situation is the reversal phenomenon of the magnet. This may be due to external magnetic fields or magnetism interfering with the magnet, causing its magnetic direction to change.

2. Demagnetization phenomenon: Demagnetization occurs when a Spherical magnet loses its magnetism and cannot attract other ferromagnetic objects. This may be caused by external factors such as high temperatures, strong magnetic fields, or physical shock, causing the magnet to lose its permanent magnetism.

When identifying reversal and demagnetization phenomena, a magnet tester or a simple ferromagnetic object can be used to detect the magnetic state of the magnet. If the magnet still attracts ferromagnetic objects and maintains a stable magnetic direction, it has not reversed or demagnetized. If the expected attraction effect is not achieved or the magnetic direction changes, then it is necessary to consider whether reversal or demagnetization has occurred.