Kestomagneetti

Kestomagneetti, often referred to as a permanent magnet, is an object made from a material that is magnetized and creates its own persistent magnetic field. Unlike electromagnets, which require an electric current to produce a magnetic field, kestomagneetti maintain their magnetism without any external power source. The magnetic properties of these materials arise from the alignment of their atomic magnetic moments.

The strength and characteristics of a kestomagneetti depend on the specific material used. Common materials include various alloys such as ferrite, alnico, samarium-cobalt, and neodymium-iron-boron (NdFeB). Neodymium magnets, for instance, are known for their exceptionally strong magnetic fields relative to their size and are widely used in modern technology.

Kestomagneetit are ubiquitous in everyday life and industrial applications. They are found in electric motors, generators, loudspeakers, magnetic storage devices like hard drives, magnetic resonance imaging (MRI) machines, and in simple items such as refrigerator magnets and cabinet latches. Their ability to generate a constant magnetic force without continuous energy input makes them highly efficient and cost-effective for numerous purposes. The production and handling of powerful kestomagneetit require specific safety considerations due to their strong attractive forces.