Okay... Im pretty sure this isn't a paradox, so my(adsbygoogle = window.adsbygoogle || []).push({});

reasoning must be flawed somewhere.

Could someone tell me where Im going wrong?

Consider 2 electrons, traveling in straight lines,

parallel to each other, at the same speed v, in

the same direction. An observer in a stationary

reference frame will see them each produce a magnetic

field, and so will notice them being drawn towards

each other.

(Analagous with the force between 2 parallel current carrying wires)

Now consider the case where the observer moves

with the electrons, within their frame of reference.

To him, the electrons will appear stationary, and so

he will only see an electric field between them.

If this was the case, he should see the electrons being

repelled from each other.

Obviously the physics must be the same, irrespective of the

frame of reference, so where have I gone wrong?

Thanks a lot! :tongue:

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# Could someone please help me get my mind around this paradox

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