Thread: What are your favourite simple things that science just cannot explain?

Originally Posted by PhilosopherStoned

Photons "mediate" the electromagnetic force. I could cook up some matter that was nothing but protons bound together by the strong force, e.g. an atomic nucleus, and an observer moving past it would measure a magnetic field.

I'm confused... surely with small velocities we can assume non-relativistic space, but in this situation it seems to be that the existence of a magnetic force depends on the frame.