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The Meissner effect is the expulsion of a magnetic field from a superconductor. Superconductor disk + Rare Earth magnet + Liquid nitrogen = floating magnet ;) picked by Betmenko 5 months ago tags meissner effect magnet floating |
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There is a growing body of evidence that suggests the Earth's magnetic field is about to disappear (at least for a while). As the magnetic poles shift position, it will have a significant effect on our terrestrial weather as well as all the gadgets we've launched into Earth orbit. picked by BrownTrout 2 years ago 0 comments edit related share science |
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If compasses were around a million years ago, they would not have pointed toward North. That's because the Earth's magnetic field likely underwent a reversal 800,000 years ago. picked by AutumnLotus 2 years ago 1 comments edit related share science |
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"a large number of the self-described "above average" individuals are actually below average in those areas, and they are simply unaware of their incompetence." 10 comments edit related share scienceThis would explain president Bush. picked by Queenofhearts 2 years ago |
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