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dirac sea

dirac sea in Science
Dirac sea  
In relativistic quantum mechanics, the completely filled, infinite set of negative energy electron states that makes up a vacuum. If a negative energy electron is promoted to a positive energy state, the hole it leaves behind has the properties of a positron.
The American HeritageĀ® Science Dictionary
Copyright Ā© 2002. Published by Houghton Mifflin. All rights reserved.
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