Hi ahhaha; Re: "Superconductors are only appropriate in micro electronic circuitry where the watt per unit conduit cross section is small.
This is wrong. Do a google search for "superconducting super collider" and check out how big the superconducting magnets they use are. I would guess that measured by weight, the bulk of working superconductors in the world right now are involved in high power applications in physics. In addition, superconductors have a current density limitation, not a "watt per unit cross section" limitation. The whole reason that the SSC is built with superconducting magnets is because of the extremely high currents that can be run through a relatively small region without excessive heat production. With sufficiently high voltage, the power transmitted can be tremendous. I'm not saying that superconductors are going to make it, the real issue with long distance power transmission is cooling, just that your physics is wrong, wrong, wrong.
To learn more, here's a few links:
... However, there is a certain maximum current that these materials can be made to carry, above which they stop being superconductors. This maximum current flux is referred to as the Critical Current Density, or Jc. There has been a great deal of effort to increase the value of Jc in the new ceramic superconductors. ...
users.qwest.net
... The two 1.2-meter quadrupole
magnet models with a coil aperture of 50 mm were completely designed and tested
at the laboratory. Both required only three training quenches before reaching a "plateau" current in excess of 8600 A. The first model, QSE 101, had its
first training quench at 7170 A and the second, QSE 102, at a current in excess of 7600 A--both currents well above the design operating current (6700 A). ...
hermes.kek.jp
I wouldn't refer to 6700 amps as micro electronic...
-- Carl
P.S. Opportunity to throw away money investing:
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