Source: wikibot/quantum-electrodynamics
= Quantum electrodynamics
{wiki=Quantum_electrodynamics}
Quantum Electrodynamics (QED) is a fundamental theory in physics that describes the interaction between light (photons) and charged particles, such as electrons and positrons. It is a subset of quantum field theory and serves as one of the cornerstones of the Standard Model of particle physics. QED combines the principles of quantum mechanics with electromagnetic interactions.