Dec 18, 2012 | 4
Magnets naturally levitate above superconductors. The magnet's magnetic field can't penetrate the superconductor, causing it to float almost magically above. See this phenomenon at work in an exclusive Scientific American video.
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The Seeker desires a method for producing pseudoephedrine products in such a way that it will be extremely difficult for clandestine che
Deadline: Jul 15 2013
Reward: $5,000 USD
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