Electromagnetic Power Emitted by an Accelerating Point Charge
arXiv:2103.09317
Abstract
We derive the rate of emission of electromagnetic energy by an accelerating point charge, with the acceleration and velocity in the result being taken at the present time in the motion of the accelerating charge. This contrasts with the usual textbook derivation, which calculates the energy radiated through the surface of a large sphere, and gives the rate of radiated energy in terms of the acceleration and velocity at an arbitrary retarded time.
Title changed. Some misprints corrected. Introduction and discussion modified, with same result and conclusion