Re: Time Dilation Mistakes
From: Picti (amcneish_at_swbell.net)
Date: 02/12/05
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Date: 11 Feb 2005 16:31:48 -0800
I suppose I always found Special Relativity confusing, and from the
Einstein quote you give, he had issues too. I do recall that the most
convincing demonstration for me of relativity effects was the classical
explanation of magnetism -- relativistic electro-dynamics. I believe it
is attributed to Maxwell, long before Einstein's Special Relativity,
who used the Loretz transformation for length dilation in current
carrying wires. Two parallel wires carrying electric currents produce
an imbalance in the electro-static forces between the positive
(lattice) charges and the negative moving charges because of length
dilation that effects the moving charges, reducing their apparent
linear charge density. The net electro-dynamic force is magnetism and
results because of relativistic effects, although the charges are
moving hardly faster than walking speed. I always thought that this
explanation had a kind of beuty about it, but then it was from James
Clerk Maxwell, so I should not have been so surprised.
I do not recall ever calculating the force by keeping the electrons
stationary and moving the wires, but symmetry intuition suggests the
same answer -- the twins paradox for electrons perhaps?
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