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[[de:Quantenelektrodynamik]] [[ja:量子電磁力学]]▼
'''Quantum electrodynamics''', or QED, is a [[quantum field theory]] of [[electromagnetism]]. QED describes all phenomena exhibited by [[electric charge|charged]] point particles, such as [[electron]]s and [[positron]]s, and the particles of [[light]] ([[photon]]s), interacting by electromagnetism. This theory includes [[electrodynamics|classical electrodynamics]] in the limit of large fields, but also explains purely quantum phenomena such as the structure of [[atom]]s and [[molecule]]s, the creation of particles by an [[electromagnetic field]], and the anomalous magnetic moment of the electron. (The latter prediction has been experimentally confirmed to 11 decimal digits.)
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R. P. Feynman, ''QED: The strange theory of light and matter''
[ISBN 0691024170]
[[de:Quantenelektrodynamik]]
[[es:Electrodinámica cuántica]]
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