What is quantum electrodynamics?

Question

What is quantum electrodynamics?

Answer 1

Quantum electrodynamics (QED) is a relativistic quantum field theory of electrodynamics. QED was developed by a number of physicists, beginning in the late 1920s. It describes some aspects of how electrons, positrons and photons interact. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons. It has been called "the jewel of physics" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron, and the Lamb shift of the energy levels of hydrogen.[1]

In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum.

Answer 2

u r qes. is worng

Answer 3

a quantum field theory of electrodynamics, it describes some aspects of how electrons, positrons and photons interact...=)

Answer 4

go to college and find out. i dont think anybody on yahoo answers knows what the **** that is.