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In Reply to: So how then posted by unclestu on May 9, 2011 at 16:45:47:
does the non magnetic frog float, oh great ayatollah? Is the frog magnetic?
Are you really so bloody ignorant?
Yes, I believe you are.
You don't know the first thing about paramagnetism and diamagnetism.
Paramagnetic and diamagnetic materials only respond to externally applied magnetic fields. And UNLIKE paramagnetic materials, once the externally applied field is removed, THEY DON'T RETAIN ANY RESIDUAL MAGNETIZATION.
So the whole notion of "degaussing" or "demagnetizing" with regard to paramagnetic and diamagnetic materials stems from sheer ignorance of the properties of the two phenomena.
Since the Meissner effect makes the claim that the superconductor rejects any form of magnetism, hence the levitation, do the experimenters feed the frog a magnet?
No, they don't feed the frog a magnet. The put the frog in a VERY STRONG magnetic field.
Water is slightly diamagnetic. The frog is mostly water. Therefore the frog levitates.
But as soon as the external field is turned off, the frog does not remain magnetized.
se
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- RE: So how then - Steve Eddy 05/9/1118:30:17 05/9/11 (0)
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