WQuantum electrodynamics
WBhabha scattering
WBreit–Wheeler process
WBremsstrahlung
WCompton scattering
WDual photon
WElectron
WRichard Feynman
WGauge fixing
WKlein–Nishina formula
WLamb shift
WG. Peter Lepage
WMøller scattering
WPhoton
WPositron
WPositronium
WPositronium hydride
WQED vacuum
WThe Quantum Vacuum
WSchwinger effect
WZero-point energy