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The materials I saw were pretty forthright about working only on metal surfaces, although certainly the website itself doesn't emphasize that. What I do find q
by tempestn 12y ago
The materials I saw were pretty forthright about working only on metal surfaces, although certainly the website itself doesn't emphasize that. What I do find questionable is that the creator is quoted all over the place as saying that he is committed to creating a version that won't require a metal surface. As far as my understanding of physics goes though, that's not possible... and presumably he realizes that. So that part certainly seems like a ploy.
- andrewflnr 12y agoIt's not completely impossible: http://en.wikipedia.org/wiki/Diamagnetism http://en.wikipedia.org/wiki/Diamagnetism. Most materials, when exposed to a magnetic field, produce an opposing magnetic field. However, this requires pretty ridiculously large magnetic fields: the article shows a small frog being suspended in a 16 tesla field, which is just insane. Not sure if that's what's going on here, but if it's not actually ruled out, it makes me a bit more confident that there's a more efficient way to do it.