electromagnetism

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Related to Magnetic waves: Electromagnetic waves

electromagnetism

1. magnetism produced by an electric current
2. the branch of physics concerned with magnetism produced by electric currents and with the interaction of electric and magnetic fields

Electromagnetism

The branch of science dealing with the observations and laws relating electricity to magnetism. Electromagnetism is based upon the fundamental observations that a moving electric charge produces a magnetic field and that a charge moving in a magnetic field will experience a force. The magnetic field produced by a current is related to the current, the shape of the conductor, and the magnetic properties of the medium around it by Ampère's law. The magnetic field at any point is described in terms of the force that it exerts upon a moving charge at that point. The electrical and magnetic units are defined in terms of the ampere, which in turn is defined from the force of one current upon another. The association of electricity and magnetism is also shown by electromagnetic induction, in which a changing magnetic field sets up an electric field within a conductor and causes the charges to move in the conductor. See Eddy current, Electricity, Electromagnetic induction, Faraday's law of induction, Hall effect, Inductance, Lenz's law, Reluctance

electromagnetism

[i¦lek·trō′mag·nə‚tiz·əm]
(physics)
Branch of physics relating electricity to magnetism.
Magnetism produced by an electric current rather than by a permanent magnet.
References in periodicals archive ?
Their research revealed that the magnetic waves travel in both direc-tions along the Sun's magnetic field.
Now, using a sensitive instrument aboard NASA's Solar Dynamics Observatory, McIntosh and colleagues have discovered magnetic waves throughout the corona and the transition zone between it and the chromosphere.
Electro and magnetic waves expand into larger waves from the antinodes (displacement) energy of standing waves at twice the wave amplitude of the smaller wave giving distance to the field.
The Aculife Magnetic Wave Therapist combines modern scientific techniques with old chinese medicine.
Scientists are now using pulsating magnetic waves to treat depression and schizophrenia.
As they see it, the Mapimi is "The Zone of Silence," where magnetic waves are mysteriously altered or silenced.
NIST scientists have recently implemented a Brillouin light scattering facility for characterizing acoustic and magnetic waves in thin-film and bulk materials.
In addition, some areas of the plant are completely shielded from magnetic waves to protect Fujitsu's equipment and manufacturing processes.
Wireless communication is based on sending magnetic waves through ether.
Air traffic controllers at Pudong International Airport had apparently been complaining of frequent interference caused by external magnetic waves, which they believed could eventually threaten flight safety.
MRI, using magnetic waves rather than light waves to create its image, is currently under investigation as a non-invasive technique to detect varicocele.
Washington, Oct 16 ( ANI ): Researchers have found evidence that magnetic waves in a polar coronal hole contain enough energy to heat the corona and that they also deposit most of their energy at sufficiently low heights for the heat to spread throughout the corona.