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revesz
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What are magnets, how do they form, how do they attract and repel?
It is important to emphasize that only certain elements can form "permanent" magnets. Iron is the chief among these and most permanent magnets are mostly composed of iron. The very strong ferro-ceramic magnets that are at the heart of an audio speaker are an example of this.Originally posted by lavalamp
"...in a bar magnet the electrons all line up and so rather than the total magnetic field adding up to 0, the magnetic forces of all of the moving charged particles builds up to form a more noticable magnetic field.
Magnetism is a fundamental force of nature that causes certain materials to attract or repel each other. It is caused by the alignment of electrons within the material, creating a magnetic field.
Magnets are typically made of iron, nickel, cobalt, or a combination of these elements. They can also be made from certain alloys or ceramics.
Magnets work by creating a magnetic field that exerts a force on other magnets or magnetic materials. This force is strongest at the poles of the magnet, where the magnetic field is most concentrated.
The most common types of magnets are permanent magnets, which retain their magnetism over time, and electromagnets, which require an electric current to create a magnetic field. Other types include temporary magnets, superconducting magnets, and rare-earth magnets.
Magnets have a wide range of practical applications, including data storage in hard drives, motors and generators, magnetic resonance imaging (MRI) machines, and speakers in audio equipment. They are also used in everyday items such as refrigerator magnets and magnetic toys.