Magnet.

Electromagnets generate magnetic fields using electric currents. I know it, you also knew it and everybody knows about it. But have we ever try to study about magnet itself?

Actually, magnet is a generic term that generally refers to a magnetic things, the actual composition may not necessarily contain iron. Typical permanent magnets include ceramic magnets, plastic magnets, hematite magnets, and neodymium magnets. There's many types magnets for you to know but only 1 fact about magnet that we can't deny that is magnetic zones on magnetic affecting each other. Simple right?