What Magnets are used for? Magnets are used to make a tight seal on the doors to refrigerators and freezers. They power speakers in stereos, earphones, and televisions. Magnets are used to store data in computers, and are important in scanning machines called MRIs (magnetic resonance imagers), which doctors use to look inside people's bodies Clamps perfect for holding pieces of metal in place, used for welding, drilling, or machining. Magnetic therapy as a healing tool. Put magnetization back with remagnetization such as Alnico horseshoes and other bar magnets. Catching ferrous metals that goes through your oil filter. Electric car motors for cordless tools. They are commonly used in products such as computer hard drives, certain types of magnetics clasps, door locks, electric car motors, wind turbines, various types of audio equipment. Why are they useful? They are materials with a magnetic force or field that can attract or repel objects. Do they Demagnetize? Magnets have a high resistance to demagnetization, however, they begin to lose strength if they are heated above their maximum operating temperature 180°F (80°C). And will completely lose their magnetization if heated above their Curie temperature, which is 590°F (310°C)
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