Magnetism is a powerful force that can attract one object to another. It is found in nature, but it also can be made by using electricity. The opposite is true, too Magnetism can be used to make electricity. Electromagnetism the close relationship between these forces makes possible many important things in modern life, from electric motors and power generators to lasers, cell phones, and computers. It is also one of the basic forces in nature. For more information, read Thomas Edison and the Developers of Electromagnetism, another book in the Mission Science series.

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Thomas Edison was called a wizard, which was a good nickname for one of history_s most famous inventors and the holder of more than 1,000 patents. Often improving upon the ideas of others, Edison and his assistants perfected the incandescent lightbulb, and created the first successful electrical power system, the alkaline battery, and the phonograph, which played recorded sound. Edison_s modern industrial research laboratory was one of the first, and he helped to start the motion picture industry. For more information, read Electromagnetism, another book in the Mission Science series.

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