No. The disappearance of magnetism from the magnet has nothing to do with water. So what factors are related to the disappearance of magnetism from the magnet? Magnets are not made of iron and will not rust. The composition of the magnets is ferroferric oxide, which is a type of iron oxide, so they do not rust. As for magnetism, the magnetism of permanent magnets will not be lost due to external influences. Permanent magnets can be used without any interference. The same goes for other ordinary magnets.
< p>There are two types of magnets. One is the permanent magnet, which is derived from evolution. The other is temporary. It is placed around a magnet and is slowly magnetized. The permanent magnet will not lose its magnetism, but it is expensive. It will temporarily lose its magnetism, but it is now commonly used by ordinary people.The reason why magnets are magnetic is that there are many dmagnetic domains in the same direction arranged in an orderly manner. Inside the magnet. When the piece of iron is close to the magnet, it magnetizes the magnetic field of the magnet. You can also see that the magnet becomes a small magnet. The two different magnetic poles attract each other and the magnet attracts each other. the iron. If the internal arrangement of the magnet is disordered, the magnet will weaken the magnetism or even disappear. For example, if you heat the magnet or iron sheet, or hit the magnet vigorously, the magnet will be disordered and the magnetism will disappear. you are interested, you can try Try using a magnet to pick up a piece of burnt red iron, but you definitely won't be able to pick it up.
Once the magnet attracts the iron piece, it will also change the order more or less. Many so-called permanent magnets sold now only modify the order very slightly or have other featuresmagnetic compensation itives. The magnetic strip of a credit card can also be thought of as a small magnet. After using it for a while, it needs to be remagnetized.
If you have time, you can do an experiment. Buy a magnet and attach it to iron objects. After a while the magnetism will weaken and if left for a long time it will eventually weaken. to fall.
When a magnet encounters water, its magnetism does not weaken much. Reason: The principle of the magnet is that the atoms of the iron element are arranged in the order of a vertex (the atoms of ordinary iron element are arranged randomly), so it has a magnetism for iron. Therefore, after contacting the water, the. atoms in the element iron The sequence is not disrupted, so the magnet is still magnetic. Magnets weaken when exposed to heat. Is ithot water ?