Electromagnetism

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Electromagnetism is a subdivision of physics which deals with magnetism and electricity and the interface between them. It was first discovered in the 19th century and has wide application in today's world of physics. Electromagnetism is mainly the science of electromagnetic fields. An electromagnetic field is the field formed by objects that are charged electrically, Infrared waves, Radio waves, Ultraviolet waves and x-rays are all electromagnetic fields in a certain range of frequency. Electricity is formed by the changing of magnetic field. The sensation is also called "electromagnetic induction." Similarly the magnetic field is created by the motion of electric charges.