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From: abhilash j pillai on 2 Jun 2010 19:02
hello


Consider a long live conducting wire AB along the -X axis and its two
ends are connected to a DC battery or source. let a charged particle Q
be moving along (parallel to AB) in the direction of the conducting
electrons.
An observer who is at rest with AB sees a magnetic force = F
An observer who is moving, sees a combination of electric (due to
length contraction and hence a higher charge density) and magnetic
force which sums to F.

Now consider the same setup, but here the wire AB is earthed or
grounded.
Here the observer who is at rest sees the same magnetic force F
But for the observer who is moving, the increase in charge density
means that it should attract (repeal) opposite charges from the ground
(earth) and the force due to the electric component is zero leaving
only the magnetic component of the force and this won’t be equal to F.
More over attracting (or repelling) electrons from the ground/earth to
the wire means (which itself depends on the velocity of the observer)
means that there is a net charge accumulation in the wire. How is this
discrepancy solved?

I have written an article (not concerning the above matter) about
classical electrodynamics. In fact the article finally agrees the fact
that observers in the same frame of reference should observe same
effects (or results) due to the same or similar incidents (or cause)

Now at this point would go to this google groups site
http://groups.google.co.in/group/electrodynamicsandmagnetism

And download the file titled - electrodynamics and magnetism.pdf. it
is an attempt to answer this kind of problems in a classical way and
about an undone experiment ( undone to my knowledge) and send me your
valuable opinions regarding this.

Thanking you

Abhilash J Pillai.
From: alexander carlos on 3 Jun 2010 03:24
hi abhilash
great stuff
what you have in there is purely logical though I will have to ask my
professors regarding this.
thank you

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