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Hey can anyone explain this

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bikefreedom
Nitrous Nuisance



Joined: 04 Apr 2005
Karma :
PostPosted: 15:30 - 02 Mar 2006    Post subject: Hey can anyone explain this Reply with quote
Can anyone explain how this is done and what the gree stuff is. I know the that it is liquid nitrogen being pored.
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McGee
O RLY?



Joined: 24 Jun 2005
Karma :
PostPosted: 15:39 - 02 Mar 2006    Post subject: Reply with quote
Super conductivity

This is an excellent demo of super conductivity. The liquid is liquid nitrogen. The disk is a magnet. The black block is the super conducting (SC) material (but becomes SC only below its critical temperature, somewhat higher than liquid nitrogen).

When warm, the block has no particular magnetic / electric properties. When cooled, it becomes a SC. One of the properties of a SC is that magnetic fields can be pinned in place in the SC.

A moving magnetic field generates eddie currents within conductors, and can be felt as a resistance to relative motion. In most materials, this current quickly decays due to electrical resistance. In SC, eddie currents do not decay, but instead will tend to hold the magnetic field in place.
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Its pronounced Jixxer!
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Adam.I
World Chat Champion



Joined: 22 Jun 2004
Karma :
PostPosted: 21:11 - 02 Mar 2006    Post subject: Reply with quote
Now all you need to do McGee is understand what you have plagerized, lol.
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McGee
O RLY?



Joined: 24 Jun 2005
Karma :
PostPosted: 23:07 - 02 Mar 2006    Post subject: Reply with quote
Wink I do dont worry Thumbs Up
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◄◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙►◄◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙►◄◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙►
Its pronounced Jixxer!
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