posted on Oct, 18 2011 @ 12:28 AM
To levitate a thing like this, you have several requirements:
1) the object must be made of a superconducting material,
2) it must be cooled to its superconducting critical point,
3) it must be placed over a magnet
1 & 2 can be most easily satisfied if you use a high-temperature superconductor (en.wikipedia.org...
cool it with liquid nitrogen. Still, this is by no means easy, and without constantly reapplying liquid nitrogen to keep the temperature low, the
effect will quickly disappear. Placing the levitating object near a heat source (such as a human, for example) will also heat it more rapidly.
3 is also pretty tricky if you're talking about anything on a human-sized scale. It means either dumping massive current into an electromagnet, or
finding or manufacturing massive permanent magnets, neither is very cheap or easy.
Still, it's a cool effect and demonstrates principles at the cutting edge of condensed matter physics.