Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
High-temperature superconductors are generally considered to be those that demonstrate superconductivity at or above the temperature of liquid nitrogen, or −196 °C (77 K), since this is the most easily attainable cryogenic temperature.
If you need to cool the track with liquid nitrogen, I'm afraid it's not a practical technology. this side of the asteroid belt.

Those whom the Gods wish to destroy They first make mad. -- Euripides
by Carrie (migeru at eurotrib dot com) on Tue Sep 26th, 2006 at 12:17:22 PM EST
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