electromagnetic field


electromagnetic field
the coupled electric and magnetic fields that are generated by time-varying currents and accelerated charges. Cf. Maxwell's field equations.

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Property of space caused by the motion of an electric charge.

A stationary charge produces an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. A changing magnetic field also produces an electric field. The interaction of electric and magnetic fields produces an electromagnetic field, which has its own existence in space apart from the charges involved. An electromagnetic field can sometimes be described as a wave that transports electromagnetic radiation.

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      a property of space caused by the motion of an electric charge. A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field. The mutual interaction of electric and magnetic fields produces an electromagnetic field, which is considered as having its own existence in space apart from the charges or currents (a stream of moving charges) with which it may be related. Under certain circumstances, this electromagnetic field can be described as a wave transporting electromagnetic energy.

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Universalium. 2010.

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