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Electromagnetism

Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, which exerts a force on those particles that possess the property of electric charge, and is in turn affected by the presence and motion of such particles.

Note:   The above text is excerpted from the Wikipedia article "Electromagnetism", which has been released under the GNU Free Documentation License.
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August 28, 2015

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