It doesn't look like I'll ever get access to any physics professors. I am too old and far away to enroll in any of their PhD programs. So I'll ask this question here – maybe someone knows the answer, or can steer me towards a good textbook on this subject. One of my many textbooks states that all electromagnetic problems can be explained with Special Relativity Theory. The example given is of Ampere's law about parallel currents in parallel wires attracting each other. From the perspective of the moving electrons in wire #2, the apparent Lorentz contraction of the stationary protons in wire #1 gives wire #1 an apparent concentration of protons, and thus a plus charge which then attracts the electrons in wire #2. (And vice versa of course, but for discussion purposes, my questions will focus on the supposed attraction of the electrons in wire #2 to the protons in wire #1.) I have some problems with that explanation. The first problem is that it seems to conveniently ignore the influence and behavior of the moving electrons in wire #1. They too would or should experience the increased concentration and charge of their own protons. So wouldn't they just pack in more electrons from the battery, and thus totally shield any net positive charge influence reaching out through space over to wire #2? My second problem with that explanation is more serious – and much more difficult to describe. It concerns the behavior of a charged particle, say an electron, in the vicinity of a current carrying wire. The force on the electron is perpendicular to both its own velocity and the B field, i.e., q (v x B), etc. That makes some sense to me, as long as the electron's trajectory is inside the poles of the coil of wire causing the B field. The electron executes a little circle – in the opposite direction from the flow of electrons in the coil. No mater what direction it is traveling, it is attracted to that part of the coil where the wire electrons are moving parallel to it, and repelled from the opposite side. Except for my first problem with that mentioned above, this behavior can be explained with SRT. But what about the behavior of the electron outside the coil of wire? The behavior seems consistent with the SRT explanation above when the trajectory is tangent to the coil – the electron is attracted to the coil if the current in the very local vicinity is parallel, etc. But when the trajectory is in the plane of the coil and (approaching) perpendicular to the local wire and current direction, the force has to be upstream with respect to the velocity of the electrons in the wire according to q (v x B). I cannot understand that from the perspective of SRT. From symmetry, the upstream force on the electron cannot arise from the plus proton charges – the electron's approaching velocity is perpendicular to the local wire. Thus the force on our test electron must arise from the relative contraction of the wire electrons upstream and downstream from its trajectory. Yet the upstream electrons obviously have a higher relative (approaching) velocity than the downstream (departing) ones, so they should be contracted more than the downstream ones. Thus the apparent excess negative charge should be upstream from the test electron, tending to repel the test electron. Which ain't right, so how does one explain this with SRT? Any help appreciated.