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Geometrically Frustrated Registered Member #6
Joined: Thu Feb 02 2006, 04:18AM
Location: Bowdoin, Maine
Posts: 373
Hah, that is so cool. I bet you could do some neat things using an electromagnetic track, or aybe an electromagnet-augmented permenant magnet track, since electromagnets alone would probably use an obscene amount of power.
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
So what magnet track configuration gives rise to repulsion when it's close, and attraction when far away?
The superconductor seems to resist any changes in magnetic flux it sits in; energy input is required to change the eddy current inside the superconductor.
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
It is quite complicated, this is a type II superconductor that has defects that are not superconducting. The fieldlines pass through the defects to make the train stable. Then you have the eddy currents in addition.
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Superconducting model trains?
