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Did any of you see the Nova segment on super cold? They had a
superconducting hockey puck which went round a track until it warmed up
and landed on the track. I think that it would make a cool toy. Except
that the child would burn himself on it, or worse eat it. The man who
was demonstrating it pick it up, I would think that it would burn his
fingers. It reminded me of Mark Goldes room temperature superconductor.
