Radiation reaction

In the physics of electromagnetism, the radiation reaction is the recoil force felt by a charged object that is emitting electromagnetic radiation. It is part of the self-force of an electric charge which is the net force that a charged object's electro-magnetic field exerts on the object itself. Another part of the self-force is an addition to the object's opposition to being accelerated (inertia) due to its electrical potential energy of self-repulsion.