In this third volume of three quantum electrodynamics is formulated in the language of
physical dressed particles. A theory where charged particles interact via instantaneous
action-at-a-distance forces is constructed - without need for renormalization. This theory
describes electromagnetic phenomena in terms of directly interacting charges but in full
accord with fundamental principles of relativity and causality. Contents Three ways to look at
QFT Dressing What are advantages of dressed Hamiltonian? Coulomb potential and beyond Decays
RQD in higher orders Classical electrodynamics Experimental support of RQD Particles and
relativity Special theory of relativity Unitary dressing transformation Integral for decay law
Coulomb scattering integral in fourth order Relativistic invariance of Coulomb-Darwin-Breit
electrodynamics
