The most important uses of magnets
The role of magnets in various areas of life, including technology, health, food, industry, and others, and therefore the most important uses of magnets are explained as follows:
Computer and electronics
Many computers rely on magnets to store data on the hard drive, where magnets convert the direction of the magnetic material on the hard drive into parts that represent computer data so that computers later read the direction of each part of them to extract data, and magnets are also used in the manufacture of speakers in televisions and computers; inside these speakers, there is a coil of wires and magnets that convert electronic signals into sound vibrations.
Medicine and Health
Magnets are widely involved in the work of the medical and health sectors, as magnets are found in medical devices such as magnetic resonance devices, and cancer diagnosis and treatment devices, which work by injecting the patient with a magnetic liquid and then using magnets to raise his body temperature, to help kill cancer cells without harming healthy cells in the body.
Appliances used in homes contain many magnets, starting with those in the refrigerator, passing through the compass, bank credit cards, personal computers, vacuum cleaners, washing machines powered by magnet-based motors, blenders, mobile phones, doorbells, children's toys, and more.
Other uses of 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, for example, in filtering agricultural crops used in the food industry by passing them on a magnetic belt to attach small metal pieces.
The mechanism of action of the magnet
The magnet contains two north and south poles, and each of them is attracted to the opposite pole and repels the pole similar to it, so when you approximate a piece of iron from 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 as a magnet, and it is also worth noting that some types of metals can be magnetized electrically, by passing an electric current in a coil surrounding them, so that a temporary magnetic field forms around them It ends the moment the power is cut off from this wired coil.