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Feb14-13, 08:17 AM
P: 36
I've been researching this for hours and yet cant seem to get an understanding.

So, let's take an electron fixed in space. At any given time it has an electrostatic field around it which decreases with distance and uses photons as a force carrier. It has an elementary charge e- and will attract protons/repel electrons.

Now let's say you have 2 electrons within each other's electrostatic fields, however we are "holding" them so that although they are experiencing repulsive forces, they are not moving.

Now let's say i take one electron and start moving it.
This means that relative to each other, both are moving.

This means that immediately, both start to invoke a magnetic field on each other, correct?

question 1: But what does this even mean? The only difference i see is that electron 1 will still be applying an electrostatic force but the strength of that force will vary from stronger to weaker as i move the electron closer or farther from the other electron.

Question 2: I dont even understand the functional difference of a magnetic field. This is the magnetic field that can attract certain metals, and can repel or attract ends of a magnet, right? Does it do anything else?

Question 3: But isnt that just the same as having a negative or positive net charge in a substance based on a local abundance of protons or electrons? And an object wouldnt have to be moving to exert a net electrostatic force and repel or attract something. So how on earth does MOTION of electrons create a magnetic field?

Question 4: For emphasis of 3: What's so special/necessary about the "motion" aspect in creating magnetic fields?

Question 5: Where on earth does this magnetic field come from? I dont understand what in the system changes that you get this fundamentally new (yet interconnected) force. The force carrier is still the photon, and the electrons still have an elementary charge, but now the location of that charge point is changing, so the only outcome i can see is that an affected body would be increasingly or decreasingly subjected to the strength of that charge point as it moves over time... I have no idea where the magnetic aspect comes in..

If someone could clarify my misunderstandings and gaps in knowledge it would really make my day!
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