A European Informational Website
learn more
Quantum electrodynamics (QED) is a relativistic quantum field theory of electromagnetism. QED was developed by a number of physicists in 1929.[1] QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons, whether the interaction is between light and matter or between two charged particles. 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.