Magnetism and Related Facts
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The concept of a magnet is not new. Aristotle (the father of science) first explained how magnets produce a mutual attraction between two poles by using a fish hook. The turning of a fish has a similar effect on a magnet. These days, magnets are often used to create a force field by aligning magnet poles on rods, and the strength of this force depends on the mass of magnets.
Magnetic motors are used to induce forces that are analogous to those of a permanent magnet, i.e., a device that possesses a permanent polarity. For example, a dynamo, which is a combination of electric motors and magnetic motors, creates a continuous motion through rotation, thanks to its powerful attraction-repulsion duality. In more common applications, such as the production of electricity through an ionic cell, a permanent magnet is used to create a field that gives an electrical current when put near an electrically conductive component.
