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As water is predominantly diamagnetic, this technique has been used to levitate water droplets and even live animals, such as a grasshopper, frog and a mouse. [16] However, the magnetic fields required for this are very high, typically in the range of 16 teslas , and therefore create significant problems if ferromagnetic materials are nearby.
The resistive magnet produces 33.5 T and the superconducting coil produces the remaining 11.5 T. The former magnet requires 30 MW of power, the latter must be kept at 1.8 K (−456.43 °F) using liquid helium, taking 6 weeks to cool. It costs $1452 per hour to run at full field.
Spin-stabilized magnetic levitation is a phenomenon of magnetic levitation whereby a spinning magnet or array of magnets (typically as a top) is levitated via magnetic forces above another magnet or array of magnets, and stabilised by gyroscopic effect due to a spin rate that is neither too fast, nor too slow to allow for a necessary precession.
The disks are pierced with holes through which cooling water passes to carry away the heat caused by the high current. The strongest continuous field achieved solely with a resistive magnet is 41.5 T as of 22 August 2017, produced by a Bitter electromagnet at the National High Magnetic Field Laboratory in Tallahassee, Florida.
A cube magnet levitating over a superconducting material (known as the Meissner effect). Levitation (from Latin levitas, lit. ' lightness ') [1] is the process by which an object is held aloft in a stable position, without mechanical support via any physical contact.
The field strength at the poles of any permanent magnet depends very much on the shape and is usually well below the remanence strength of the material. Alnico alloys have some of the highest Curie temperatures of any magnetic material, around 800 °C (1,470 °F), although the maximal working temperature is typically limited to around 538 °C ...
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