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In between the black lines of iron filings there are clean stripes. Why iron filings avoid that space?
If I assume that radiation is the 'carrier' of EM, and then state that there is no limit to a photons propagation, then I also have to conclude that there should be no limit to a magnetic fields 'propagation', that is if I'm thinking right here. Doing so I then live in a SpaceTime filled with Gravity, Electricity and Magnetism (EM aka photons). And assuming that the magnetic fields are limitless, as well as each one filling 'all space' no matter what the iron fillings show me, SpaceTime becomes a very magnetic vision
Ah, but didn't Einstein also say that, as I see it, due to frames of reference you can define a purely magnetic field without any electrical component? I remember reading that somewhere? And it been stuck in my mind since then . It all goes to question how seriously you should take a 'frame of reference' if I now remember right. We all live 'locally', with our own ruler and clock defining SpaceTime, so, assume that you find a magnetic field in the manner described.. Is it 'real' or would you call it a 'illusion'.I think ..