The hallmark picture of the Meissner Effect is a magnet levitating
over a superconductor at a very cold
temperature. That was the Hallmark of superconductivity in the 20th
century. The hallmark of
superconductivity for the 21st century will be the levitation of a
magnet as pure diamagnetism over
a Wimshurst and Van de Graaff machines. Where the theory simply
becomes Superconductivity equals
a Capacitor Current. And where the old physics never realized or
understood that "currents" come in
a large diverse variety and not stuck to only two different types of
currents of DC or AC.
Now with the Wimshurst generator, the electrodes are iron so the
magnet polarity attracts at one electrode
and repels at the other electrode and once the generator is operating
with Capacitor-Current running through
the electrodes, that the magnet levitates and is repelled at both
electrodes, so we have a pure diamagnetism.
Now with the Van de Graaff generator, where my machine has two domes
of plastic and aluminum, still the
magnet is weakly attracted at one electrode and repelled from the
other electrode. This attraction and repulsion
by the two electrodes is Lenz's Law. But when the Wimshurst and Van de
Graaff are in motion producing
a Capacitor Current, then there is only a repulsion of the magnet from
both electrodes.
I suspend the magnet which is a lathed iron shaving that is weakly
magnetized between the electrodes.
This is a bit awkward for the Van de Graaff since the domes are so
unequal in size. So I am looking for better
alternatives to the Van de Graaff such as perhaps a plastic bed
suspended above the electrodes with the
magnet resting in the middle and I would expect a levitation once the
Capacitor-Current is running.
The difference between the levitation of a magnet by a perovskite
superconductor or mercury chilled to
4 Kelvin and the levitation of a magnet from a Wimshurst or Van de
Graaff generator is that the perovskite
produces a running Capacitor Current in solid state material as the
Capacitor current runs through the
perovskite, whereas in the Wimshurst there is "air" as the medium
through which the Capacitor Current
is running and thus it is just more difficult to display the Meissner
Effect of the levitating magnet.
So I wonder, if one takes the perovskite superconductor and connects
the ends to a Wimshurst generator electrodes
that we increase the Tc of that perovskite since the current is
already a Capacitor Current would likely
boost the Tc.
Archimedes Plutonium
www.iw.net/~a_plutonium
whole entire Universe is just one big atom
where dots of the electron-dot-cloud are galaxies