Free space (electromagnetism)/Definition

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Revision as of 13:09, 25 November 2010 by imported>Milton Beychok (Free space/Definition moved to Free space (electromagnetism)/Definition: For disambiguation)
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A definition or brief description of Free space (electromagnetism).

In classical electromagnetism, a reference state with no fields or particles; in quantum mechanics, a state with electromagnetic fields fluctuating about an average value of zero.