N. 3 - 21 aprile 2001 - Giano Bifronte

closed circuit) that implies acceleration. On the contrary, open currents
do not require absolute but only relative motion and no accelerations
are involved.
To test the existence of a magnetic field generated (according to
relativity) by open currents, we have proposed in previous articles to
perform the inverse of Rowland's experiment. This would consist in
moving a magnetic needle through the electric field generated by a
charge distribution at rest in the laboratory. Since this experiment is
difficult to be realized, we propose here the following alternative
experiment that exploits Faraday's Law.
A parallel plate condenser is charged at a high voltage and a coil is
made to move at constant speed through the plates. In the frame of the
coil, according to relativity, a time-varying magnetic field is created and
by Faraday's Law it induces a current in the coil. This current should be
observable with the help of a sensitive electrometer.
On the other hand, according to a nonrelativistic interpretation of
electrodynamics, open currents do not generate a magnetic field. Since
there is no time varying magnetic field, there is no reason why an emf
should be induced in the moving coil.
Since a null result rules out the relativistic interpretation, this test
should be able to discriminate between the relativistic and other
interpretations of electrodynamics.
5 - Conclusions
We have shown that the effects of the AB type may be used as tests for
the Lorentz force acting on a charged particle. The test proposed
consists in verifying the interaction force between a solenoid and a
charge when they are stationary (and the current is switched off) or
when they are in relative motion.
When they are stationary the existence of an interaction force would
corroborate the differential form of Faraday's Law that has never been
tested.
When they are in relative motion, there should be no interaction force
according to relativity. If a force is detected, the standard Lorentz force
is disproved and these quantum effects have a local origin.
To test the fields generated by open currents we simply propose to
detect the induced emf when a coil moves through a charged condenser.
Relativity is confirmed only if an emf is induced.
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