In describing magnetic sources of magnetic materials, electromagnetic induction, magnetic devices, we have mentioned some of the practical applications of magnetic materials. In fact, magnetic materials have been widely used in various aspects of traditional industries.
For example, if there is no magnetic material, electrification becomes impossible, since electricity is used to generate generators, power transmission to transformers, electrical machinery to be used in electric motors, telephones, radios and televisions to use speakers. Many instruments and meters to use the magnet coil structure. These are all already talking about something else.