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magnetic magnetite.
Since antiquity I knew a black rock that appealed to iron, which they called magnetite or lodestone. It was noted that magentita hanging a piece of thin thread, the rock always positioned their magnetic poles pointing to the north and south poles of the Earth. This phenomenon was used for the operation of the compass.

fluid energetic particles in space.
The magnetic performance is related to the flow of energetic particles space where material objects are immersed, since matter is composed mainly of gaps. Operation

magnetic. Among
natural magnets is magnetite, formed by natural mineral crystallized. Crystalline molecular structure gives the necessary rigidity to maintain their atoms oriented in the same direction, forming parallel linear circuits. In these circuits are produced drafts of energetic particles, with the result of generating magnetic fields that are found mainly outside the poles.

Process particles align and temporarily magnetized. elements, iron, nickel and cobalt have a molecular structure similar to magnetite, but the molecules to be less rigid let you quickly change the orientation of their atoms. Usually oriented small domains called closed circuit with no external magnetic effect.

When we want to temporarily magnetize a piece of iron, what we do is change the orientation of their atoms, for this approach iron to a magnet such as magnetite, which modifies their energy turns small iron closed domains, forming new domains along parallel axes, in formations similar to magnetite. As a result, the piece of iron behaves like a temporary magnet. When removing the induction exerted by the spinning of the fluid, the metal atoms are disordered in a short time and stops behaving like a magnet.

The induced magnetism is usually temporary, when it ceases the armature domains gradually return to their previous state of internal closed circuits. If some domains remain aligned, it is said that the material remains magnetized. The ability to retain magnetism is called retentivity.

The magnet shows its effects.
magnetic field is called asset to the area where the magnet manifests its effects, one example is when you place a card with iron filings over a magnet, slowly move the card, there will be some filings that will be guided by the magnet and others not, the area that guides filings where the magnet is showing its effects.

electromagnetic fields.
addition to finding active magnetic fields in some materials and there are also artificial magnetic fields generated by electrical induction (electromagnetism). For example, when between the ends of copper wire there is a potential difference that sends an electric current. A more common as many copper atoms are oriented in the same direction, increasing the rotation of energetic particles as a result also increases the intensity of the magnetic field. Explanation

magnetism.
When a magnet is divided into pieces, each resulting piece continues to be a complete magnet with two magnetic poles. Finally we come to molecules where the atoms are aligned in one direction, forming parallel circuits rotating energetic particles in space.