electromagnetism

(redirected from Electro-magnetic)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Electro-magnetic: Electromagnetic force, Electromagnetic interference, Electromagnetic induction, Electromagnetic hypersensitivity, Electromagnetic theory

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 ?
Rayner suggested that if pigeon lofts were situated in British territory at locations with the same electro-magnetic and coriolis values as potential enemy installations, in the event of war they could then be turned on the target.
At Cox, electro-magnetic and magnetic surveys are planned for 2007.
Mr Hardiman and his brother Michael, who has a background in the nuclear industry, designed the Neutraliser after spending ten years investigating the effects of electro-magnetic fields.
When flowing through the electro-magnetic force field of the Hydromag unit, the positively and negatively charged colloids in water accumulate to form larger particles and these are carried in solution within the flow rather than forming a crystal which adheres to plant.
MagneMover Design capabilities address proper vehicle and track dimensions to maintain the proper gap between the magnet array and the top of the QuickStick[TM] LSM, magnetic hold-down forces, magnet array lengths, motor placement, electro-magnetic switching, and different radii turns.
Known as Actera, it involves using a pulsating electro-magnetic field to increase the blood flow in dormant cells within arteries and veins.
Life is tough for researchers investigating the health effects of electro-magnetic fields.
Raser is a publicly traded technology licensing company focused on improving the efficiency of rotating electro-magnetic and heat transfer applications within the Transportation, Industrial and Power Generation markets.
AdaptNav II provides a whole new level of navigation sensor performance in environments where electro-magnetic noise is present .
Aura Systems uses its proprietary and patented electro-magnetic and electro-optic technologies to produce innovative consumer and industrial products.
Aura Systems is a world leader in electro-magnetic and electro- optical devices.
Maintaining a stable water temperature is critical to controlling the accuracy of the electro-magnetic lens within the state-of-the-art VB300 system therefore we needed a supplier with a proven track record and substantial thermodynamics expertise.

Full browser ?