The magnets have magnetic fields that they attract the articles that contain iron. For example, some of the substances attracted by magnets are of iron, nickel and steel. The magnets are used for a variety of intentions, that go from sticking elements to the doors of the refrigerator to the creation of compasses, to make work huntings and the mechanical energy conversion in electrical energy, the magnets also are used in some toys. In order to understand how the magnets work, the dynamics of the magnetic field is due to find out, which is the space that surrounds to a magnet; this space is occupied by a magnetic force. A magnetic field is created as a result of the movement of loads. A good example of this is the electrical current that flows through a cable.

When this happens, and they do not have negative load, the particles subatomics, calls electrons, move through wire. As these loads move, a magnetic field around the wire forms. Of the same way, the magnetic field of a magnet is created by the electron movement. The magnetic field of a magnet attracts or repels to certain metals, as well as to other magnets. A magnet has two ends that are known like the poles.

One of the poles is called north and the other is known like the south, to attract magnets to each other, are due to place the opposed ends of two magnets surrounds one of the other. If the same poles of both magnets are located surrounds, it will happen quite the opposite and the magnets will be repelled to each other. Although the majority of people is familiarized with refrigerator magnets, is many other types of magnets and they are classified like permanent, temporary, and electromagnetic. The permanent magnets maintain their magnetic properties by a prolonged period of time whereas the temporary magnets lose their magnetism with greater rapidity. An electromagnet, on the contrary, is the one that is created using the electricity, its force can be modified on the base of which the electrical current allows him to move through him.