Tel: +86-18573485932
E-mail: sales@tlmagnet.com
NdFeB manufacturers talk to everyone about the working principle of magnets
The company has added several new members who are very interested in magnets. Today, Tongli Xiao Chen will come to talk with you about the principle of magnets. Magnets are one of the common magnetic
The company has added several new members who are very interested in magnets. Today, Tongli Xiao Chen will come to talk with you about the principle of magnets.
Magnets are one of the common magnetic substances in our lives. We have all seen magnets and played with magnets. We also experimented with magnets in physics class. Magnets are natural objects, not invented by humans. This kind of stone can easily absorb some iron-containing substances, and it feels like magic. When early navigators discovered its role, they used this magnet as a simple compass to identify the direction of the sea. In fact, its scientific name is magnet, and its atomic structure is very special. The two ends of the magnet are called magnetic poles. First, it has magnetism itself, and magnets can generate magnetic fields and can attract ferromagnetic substances. What is a ferromagnetic substance? For example, when iron does not encounter a magnetic field, the internal order of the atoms is chaotic, and the magnetism cancels each other out.
1. Why can magnets attract iron but not copper and aluminum?
When it encounters iron, the internal atoms of the iron are arranged neatly under the action of the magnet and are attracted by the magnet. So, can magnets attract all matter? The answer is no. For example, copper, because copper is a diamagnetic substance, when it is in an environment with a magnetic field, it will produce a repulsive effect.
There is also aluminum that is not attracted by the magnet. It is a paramagnetic substance with almost no magnetic field inside. Although a certain magnetic field is generated when it encounters a magnet, the magnetic field is very weak and not as good as iron. So it cannot be attracted by the magnet. This can also explain why aluminum pans can no longer be used in induction cookers. Therefore, some people use aluminum pans when cooking.
2. Why can magnets attract iron but not copper and aluminum?
Therefore, magnets can attract ferromagnetic materials such as iron, but cannot attract paramagnetic and diamagnetic materials such as aluminum and copper. Seeing this, do you know more about magnets? Of course, when choosing a magnet to play its role, its shape must also be considered. There are bar, round, brick and other shapes.
3. Why can magnets attract iron but not copper and aluminum?
In fact, the frequency of magnets used in life is still very high. For example, it was used to invent the compass, including magnetic therapy, which also used this principle, and it was also applied to magnetic levitation trains. Therefore, magnets have played a role in traditional industry, medicine and military. The world is huge, it contains many substances, and human beings will eventually need each substance. Why does a magnet only attract iron, but not copper and aluminum? I believe everyone will understand the principle after reading the above description.
Tongli Magnetic Industry Co., Ltd.
Address：No. 5, Changfu Road, Ludong community, Humen Town, Dongguan City, Guangdong Province.
Contact:：kiara
Tel: +86-18573485932
E-mail: sales@tlmagnet.com
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