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electromagnet
electromagnetism
electromagnetism Branch of physics dealing with the laws and phenomena that involve the interaction or interdependence of
electricity and
magnetism. The region in which the effect of an electromagnetic system can be detected is known as an
electromagnetic field. When a magnetic field changes, an
electric field can always be detected. When an electric field varies, a magnetic field can always be detected. Either type of energy field can be regarded as an electromagnetic field. A particle with an
electric charge is in a magnetic field if it experiences a force only while moving; it is in an electric field if the force is experienced when stationary.
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 "Wisconsin State Journal (Madison, WI)")
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ELECTROMAGNETS PROPEL HOVERING MAGLEV TRAINS.(LOCAL)(CURIOSITIES)(Column)
Newspaper article from: Wisconsin State Journal (Madison, WI); 8/7/2008; 534 words
; ...guide rail under the force of powerful electromagnets. It's almost like being on an airplane...would derail conventional trains. The electromagnets used in maglev technology have the...that travels initially on wheels, electromagnets on the train induce currents in electromagnets...
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Arizona Inventor Develops Electromagnet Propelled Wheeled Vehicle
News Wire article from: US Fed News Service, Including US State News; 3/24/2007; 507 words
; ...developeda wheeled vehicle which includes an electromagnet propulsion system. According to the...of electric power, and one or more electromagnet assemblies, each assembly comprising...first electromagnetic pole and a second electromagnet pole, where the first electromagnet...
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Electromagnets offered with high holding forces. (Special Section: Transformers, Inductors & Magnetic Devices).
Magazine article from: ECN-Electronic Component News; 12/1/2002; 517 words
; ...has expanded its range of standard electromagnets to offer holding forces as high as...s coil-potting design makes the electromagnets adaptable to either side or rear lead...W to 12.5 coil-windings, the electromagnets can be supplied in either miniature...
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Electromagnets.
Magazine article from: Guitar Player; 12/1/1997; ; 547 words
; ...a very young Eric playing with the Electromagnets in their original jazz-rock incarnation...trip back web worthwhile. When the Electromagnets' keyboard player left the band...To preview early EJ, check out the Electromagnets' web site at www.io. com/~park...
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German Inventors Develop Valve Actuating Electromagnet
News Wire article from: US Fed News Service, Including US State News; 11/9/2006; 446 words
; ...of Ulm, Germany, have developed an electromagnet for actuating a valve. According to...Office: "The invention relates to an electromagnet for actuating a valve. To this end, the electromagnet comprises an armature, which can be...
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South Korean Inventors Develop Electromagnet Actuation Valve
News Wire article from: US Fed News Service, Including US State News; 9/19/2008; 460 words
; ...developed a bi-stable ball valve for an electromagnet actuation. According to the abstract released...the plunger moves back and forth, a first electromagnet and a second electromagnet which are located around the first region...
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Electromagnets for micromotors. (Technology)
Magazine article from: Science News; 3/5/1994; 700+ words
; Electromagnets in the form of coils of copper wire wound around iron cores have long...the copper layer turns this microscopic sandwich into a miniature electromagnet. This procedure improves on previous fabrication techniques, in...
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Electromagnet to be used in salvage after bridge collapse in S. China
News Wire article from: Xinhua News Agency; 6/17/2007; 424 words
; Electromagnet to be used in salvage after bridge collapse in S. China NANHAI, Guangdong, June 17 (Xinhua) -- A seven-ton electromagnet is to be used to salvage the missing people and vehicles after a bridge collapsed in south China's Guangdong...
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Suspended electromagnet removes tramp iron.(Equipment Focus: MATERIAL HANDLING)(Eriez Construction Inc.)(Brief article)
Magazine article from: Pit & Quarry; 4/1/2009; 662 words
; Eriez offers suspended electromagnets to remove damaging tramp iron from materials conveyed in heavy...dusty and gassy locations. These air-cooled, dry-type electromagnets require no coolant fluids and reduce power consumption by...
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Giant electromagnet to be used in salvage vehicles in China.
News Wire article from: PTI - The Press Trust of India Ltd.; 6/18/2007; 537 words
; Giant electromagnet to be used in salvage vehicles in China Beijing, Jun 18 (PTI): A seven-tonne electromagnet is to be used to salvage the missing people and their vehicles after a bridge collapsed in south China's Guangdong Province last...
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electromagnet
Book article from: The Columbia Encyclopedia, Sixth Edition
...the soft iron in the core of an electromagnet retains little of the magnetism...magnet in many applications. Electromagnets are used to lift large masses...systems often use a special kind of electromagnet whose coil is made of a superconducting...
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Henry, Joseph (1797-1878)
Book article from: American Eras
...that the iron core of the electromagnet, when moved in and out...of the wire coils of an electromagnet affected its strength and...arrangements, he created two electromagnets, which he called a quantity...polarity as that end of the electromagnet; since magnets of the same...
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Johnson, Eric
Book article from: Contemporary Musicians
...into fusion with his own band, the Electromagnets, while playing in clubs around Austin...singing for the first time. After the Electromagnets disbanded the following year, he...while and then reformed his group with Electromagnets ’ s drummer Bill Maddox...
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relay
Book article from: The Columbia Encyclopedia, Sixth Edition
...A relay consists basically of an electromagnet with a soft iron bar, called an armature...normal position by a spring. When the electromagnet is energized, it exerts a force on...complete or break a circuit. When the electromagnet is de-energized, the contact returns...
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lock and key
Book article from: The Columbia Encyclopedia, Sixth Edition
...attached to the door and an electromagnet is attached to the doorframe...When the current flows, the electromagnet attracts the plate, holding...variation places the plate and electromagnet so that the door is held open...
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