magnetic forces

[hauk]

Magnetic force could be the future for cars, trains and other transportation. There are several ways to make this happen, but to manage this we must look into interesting magnetic behavior. for example; the meissner effect, flux trapping effect and magnetic levitation and suspension. in this experiment we use; Y-Ba-Cu-O , high tempered super conductor. when it gets in contact with liquid nitrogen it gets magnetic "power" and it repels away from a magnet ( meissner effect), but when you press the magnet on top on the object for some seconds and then release, you will see that the magnet will float stably on top of the object (flux trapping effect). Now here is my question; how do we stop this reaction rapidly when during the flux trapping effect??

[Schrödinger's hat]

Now here is my question; how do we stop this reaction rapidly when during the flux trapping effect??

 

Please reword this last bit. I do not understand.

[swansont]

Please reword this last bit. I do not understand.

 

http://en.wikipedia.org/wiki/Flux_pinning

[Schrödinger's hat]

Tx swansont, but I meant I couldn't parse his sentence.

how do we stop this reaction rapidly when during the flux trapping effect??