Recent content by andreabalestrero

Actually, I was thinking something like that accelerating a charged box will produce EM radiation, and somehow the outgoing momentum of the radiation results in a force to be balanced to push the box

A charged, metallic box has an energy content higher than an uncharged box, due to the energy stored in the electric field (which is equal to the work that has to be done to bring the charges from "infinity" to the surface of the box). So, due to the mass-energy equivalence, a charge box has a...