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electromagnetism |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.03 sec. |
electromagnetismBranch of physics that deals with the relationship between electricity and magnetism. Their merger into one concept is tied to three historical events. Hans C. Orsted's accidental discovery in 1820 that magnetic fields are produced by electric currents spurred efforts to prove that magnetic fields can induce currents. Michael Faraday showed in 1831 that a changing magnetic field can induce a current in a circuit, and James Clerk Maxwell predicted that a changing electric field has an associated magnetic field. The technological revolution attributed to the development of electric power and modern communications can be traced to these three landmarks. |
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| We're almost convinced [that electro-magnetic fields] can bring about a biological effect" relevant to cancer development, says MSU's James E. The Electro-Magnetic Acoustical Transducer can be used by a repair person to locate the exact areas along underground power lines that are under stress or have failed. last week announced it signed a contract with one of Detroit's Big Three car manufacturers to produce electro-magnetic actuators for the automaker's vehicles. |
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Electro-magnetic
