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Dec25-12, 02:08 AM
P: 611
Magnetism in a current carrying wire

Oh yeah, there's a perhaps importantly-related number 4 question too:

4) Is magnetism a relativistic effect as asserted in this video:

whereby the sideways force I'm curious about has to do with increased electron charge density due to length contraction? I've heard about this model in a couple different places but it doesn't seem to be widely discussed. Is this relativistic model generally accepted or is it a fringe theory?