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 What are the main uses of magnets?

The most important uses of magnets

The role of magnets is highlighted in various areas of life, including technology, health, food, industry, and others. Accordingly, the most important uses of magnets are explained in the following:

Computer and electronics

Many computers rely on magnets to store data on the hard disk, where the magnets transform the direction of the magnetic material on the hard disk into parts that represent computer data so that the computers later read the direction of each part to extract data, and magnets also enter into the manufacture of speakers in TVs the computer; Inside these amplifiers is a coil of wire and a magnet that converts electronic signals into sound vibrations.

Medicine and health

Magnets are widely used in the medical and health sectors. Magnets are found in medical devices such as magnetic resonance devices and cancer diagnostic and treatment devices, which work by injecting the patient with a magnetized liquid, and then using the magnet to raise his body temperature, to help kill cancer cells without harming healthy cells in the body.

houses

The devices that are used in homes contain many magnets, starting with those in the refrigerator, passing through both the compass, bank credit card, personal computers, vacuum cleaner, a washing machine that operates with magnetic-based motors, blender, mobile phone, doorbell, children's toys and more.

Other uses for magnets

Magnets are used in the manufacture of motors to convert mechanical energy into electrical energy, or vice versa in some other types. Magnets are also widely used in the food industry. 

It is used, for example, to filter agricultural crops used in the food industry by passing it on a magnetic belt to attach small metal pieces to it.

Magnet mechanism of action

The magnet has two north and south poles, and each pole is attracted to the opposite pole and repels the pole similar to it, so when a piece of iron is approached by the magnet, the atoms are temporarily polarized, and each charge moves to the opposite pole, which produces a magnetic field that makes this piece work It is also worth noting that some types of metals can be electrically magnetized, bypassing an electric current in a coil surrounding it, so that a temporary magnetic field is formed around it that ends the moment the electric current is cut off from this wire coil.