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There is another impressive video similar to the one discussed here, except it is a smaller device with embeded magnets in the rim, and the "activating" magnet is brought close to the rim and makes the disk spin very fast. At the end of the presentation, the guy dissasembles the device so we can see that nothing is hiden. Some speculate that he has a hiden rotating magnetic field under the table, because obviously this thing is OU, but these types of devices are not OU.
Just because something spins does not mean energy is dissipated in any significant quantities, (maybe just a bit of energy due to air friction and bearings). The act of bringing a magnet close to a magnetic wheel, against the wheel's magnetic field, produces a force that pushes the approching magnet and so the operator's hand INJECTS energy into the system as he opposes this force that pushes his hand away while holding the magnet. This injected energy then manifests itself as rotational kinetic energy, so all is fine, no laws of physics violated. However, what is interesting to contemplate is how the mag fields interact to convert this injected potential energy into rotation.
EM
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