In summary: The magnetic field of the spinning magnet does not generate the electric field of the em wave. It's the CHANGE in the magnetic field, i.e. the time derivative that generates the electric field of the em wave. In summary, the conversation discussed the possibility of a collapsing/forming magnetic field exceeding the speed of light, and whether this could be a reason why EM waves are generated at higher frequencies. It was also mentioned that changes in the field would still propagate at the speed of light and that rotating permanent magnets emit electromagnetic waves. It was clarified that the magnetic field does not attract, but exerts a force on charges, and that the EM waves generated by a rotating magnet would be ordinary, but predicting their frequency and amplitude would
