On the Electromagnetic Mass Dilemma

Abstract

We show that a charged sphere moving at a constant velocity $v$ exhibits a mass due to electromagnetic radiation, expressed as $4/(3+(v/c{)}^2)(E/c^2)$, where $E$ is the electromagnetic energy and $c$ the speed of light in vacuum. Our finding reconciles the longstanding mismatch between the electromagnetic mass calculated from the classical electrodynamics' $4/3(E/c^2)$ and the relativistic theory.

5 pages, 1 figure, and 14 references