Comments on: Video: The Meissner effect http://www.howitworksdaily.com/science/the-meissner-effect/ How It Works will feed your mind with informative and entertaining answers about the world around us. Packed with articles, videos, interactive illustrations and Q&As - it's enlightening fun for the whole family...' Fri, 27 Jan 2012 10:35:58 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: EPlebNeesta http://www.howitworksdaily.com/science/the-meissner-effect/comment-page-1/#comment-47065 EPlebNeesta Mon, 16 Jan 2012 19:59:47 +0000 http://www.howitworksdaily.com/?p=409#comment-47065 Why doesn't the levitation object twist over like a magnet does in the same situation? Do the fields change to compensate with the change in orientation proportionally to those changes? But wouldn't the minimal energy (ground state) of the system be when the two object are in contact? thanks, epn Why doesn’t the levitation object twist over like a magnet does in the same situation?
Do the fields change to compensate with the change in orientation proportionally to those changes?
But wouldn’t the minimal energy (ground state) of the system be when the two object are in contact?

thanks,
epn

]]> By: fred http://www.howitworksdaily.com/science/the-meissner-effect/comment-page-1/#comment-88 fred Fri, 18 Dec 2009 12:25:54 +0000 http://www.howitworksdaily.com/?p=409#comment-88 a similar effect can be achieved using a coil with iron rod and aluminum disc,the coil has ac input the disc with a hole in it is placed on the rod and on switch on the disc rises up the rod. i think its to do with eddy currents induced in the ring at room temperature. a similar effect can be achieved using a coil with iron rod and aluminum disc,the coil has ac input the disc with a hole in it is placed on the rod and on switch on the disc rises up the rod.
i think its to do with eddy currents induced in the ring at room temperature.

]]> By: John Harding http://www.howitworksdaily.com/science/the-meissner-effect/comment-page-1/#comment-47 John Harding Sat, 05 Dec 2009 04:54:48 +0000 http://www.howitworksdaily.com/?p=409#comment-47 This video shows disappearance of resistance but does not illustrate the Meissner effect. High temperature superconductors are known for not displaying the Meissner effect; instead they trap ambient magnetic fields present when they become superconducting. Note that when liquid nitrogen is poured over the superconductor, the magnet is off to the side. If there were truly a Meissner effect it would be possible to start with the magnet resting on the superconductor. When the liquid nitrogen is added, the flux from the magnet penetrating the superconductor would be expelled and the magnet would levitate. This would be much more impressive. This video shows disappearance of resistance but does not illustrate the Meissner effect. High temperature superconductors are known for not displaying the Meissner effect; instead they trap ambient magnetic fields present when they become superconducting. Note that when liquid nitrogen is poured over the superconductor, the magnet is off to the side. If there were truly a Meissner effect it would be possible to start with the magnet resting on the superconductor. When the liquid nitrogen is added, the flux from the magnet penetrating the superconductor would be expelled and the magnet would levitate. This would be much more impressive.

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