chanical power into electrical power). He created the first electric generator, which made it possible to manufacture a steady controlled flow of electricity. This led to many new discoveries such as the radio, the telegraph, street lights, and the phonograph. Some basic information about magnetism that you need to know to understand it is unlike poles attract and like poles repel. That means when you put a North Pole and a South Pole near each other, they will come together, but if you put two North poles or two South poles near each other, they will push away from each other. The greater the distance between two poles, the less force of attraction or repulsion. The greater the strength of the poles the greater the force with which the poles are drawn together or pushed apart. Another thing that many people dont realize is that there is no place on a magnet without poles. The Molecular Theory of Magnetism states that a magnetized substance is made up of magnetized particles or tiny magnets that are lined up in an orderly fashion, that is, all the north poles face in one direction and all the south poles face the opposite direction. The magnetized particles in the middle of the magnet cancel one anothers effects because the north and south poles are adjacent to each other. The poles at the ends exert an effect on external objects because these end poles are not cancelled or neutralized.To go along with that theory that there are poles all throughout the magnet, if you were to break a magnet in half you would get two magnets, each with a north and south pole. You can not have a magnet with just a North Pole or just a South Pole; a magnetic pole of one kind is always accompanied by a magnetic pole of the opposite kind. Now that it has been established that a magnet can not have only one pole, you may wonder if it can have more than two poles. As a matter of fact it is possible for a magnet to have more than two poles; these oth...
