In this video, we walk through the full analytical derivation of the electric field produced by a uniformly charged ring. Using symmetry and Coulomb’s law, we derive the exact on-axis field expression ...

A look at how top-flight sides employ the art of the dribble, from super-keen Manchester City down to semi-reluctant Crystal ...

"I'm letting people know if they want the primary, I will give them the primary, but only if I have the funding," he said.