Something to remember, quantum trapping. The experiment uses a crystal sapphire wafer 500 microns wide coated in a yttrium barium copper oxide (YBCO) ceramic. This puck is then cooled below -185ºC (-301ºF) using liquid nitrogen at which point it becomes a superconductor, meaning its able to conduct electricity without energy loss or resistance. A defining characteristic of a superconductor (known as the Meissner effect) is that when subjected to a magnetic field it will try to expel a magnetic flux from its core. The point is that the magnetic field penetrates into the superconductor in the form of discrete flux tubes. The superconductor strongly pins these tubes, causing it to float in midair. This effect is called quantum levitation. quantumlevitation
Posted on: Sat, 17 May 2014 03:56:08 +0000
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