Electromagnets
Hans Christian Oersted was the first scientist to study electromagnetism. He was a physics professor at the University of Copenhagen. In 1819 he discovered that a magnetic needle is deflected at right angles to a wire carrying an electric current, thus initiating the study of electromagnetism. This discovery, which showed a connection between electricity and magnetism, was followed up by the French scientist Andre Marie Ampere, who studied the forces between wires carrying electric currents, and by the French physicist Dominique Francois Jean Arago, who magnetized a piece of iron by placing it near a current-carrying wire. In 1831 the English scientist Michael Faraday discovered that moving a magnet near a wire induces an electric current in that wire, the inverse effect to that found by Oersted: Oersted showed that an electric current creates a magnetic field, while Faraday showed that a magnetic
The electromagnetic spectrum refers to the entire range of frequencies or a wavelength of electromagnetic waves. The electromagnetic spectrum includes radio waves, microwaves, infrared light, visible light, ultraviolet light, x-rays, and gamma rays. Light traditionally refers to the range of frequencies that can be seen by humans. field can be used to create an electric current. The English physicist James Clerk Maxwell, who predicted the existence of electromagnetic waves and identified light as an electromagnetic phenomenon, achieved the full unification of the theories of electricity and magnetism. The Briton William Sturgeon invented the first electromagnet in 1823. An electromagnet is a temporary magnet, where the magnetic field only exists when electric current if flowing. An electromagnet is a device consisting of a solenoid (usually a cylindrical coil of insulated wire wound in the form of a helix), i
Some common words found in the essay are:
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Approximate Word count = 621
Approximate Pages = 2 (250 words per page double spaced)
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