[jbay808]

There seems to be a bit of a rabbit hole here. It starts with the magnetic field interacting with charged particles only at right angles to their motion, meaning that it cannot do work on them. Work is done by electric fields that are induced by time-varying magnetic fields. Then there are objections that they can do work on magnetic dipoles (eg two permanent magnets rotating into alignment). This is countered with an objection that permanent magnets are actually a virtual coil from the current sheet orbiting the magnet's surface, so the former holds and work is done by induced electric fields. This is countered by the point that elementary particles with spin can have magnetic fields. Eventually the argument is declared a draw when someone points out that magnetic fields don't actually exist, and are just electric fields viewed from different relativistic reference frames.

[frongpik]

This deserves its own post on HN. Do you know what's the going theory about how magnetism induces the current loop? Something must tell electrons that it's time to move in the clockwise direction and that something moves at the speed of light.