astronaut right

FAQ

ezgif.com-gif-maker
ezgif.com-gif-maker (3)

Q .

Do scientists completely understand magnetism?

A .

Do scientists completely understand magnetism?

No.  Though more than ever is known about how magnetism behaves, there are still mysteries to uncover - as proved on our SCIENCE PAGE

barblue

Q .

I like your website but am unclear about how many different technologies you sell?

A .

I like your website but am unclear about how many different technologies you sell?

We sell products that levitate permanent magnets in five different ways.  Our two favorites are our own patented from-below ELECTROMAGNETIC LEVITRON technology, and our permanent magnet SPIN-STABILIZED LEVITRON TOPS.

We also sell generic from-above electromagnetic levitation products - which have been around for almost a century, and which use a simple feedback-controlled electromagnet situated just above the levitated permanent magnet.

The fourth kind of levitators we sell are called diamagnetic levitation devices - and they can suspend a magnet in close proximity to an element like graphite or bismuth with no external power or spinning required.

Finally, we sell “Superconducting Levitation” kits that use liquid nitrogen to cool the elements to extremely low temperatures, and can levitate a permanent magnet over a piece of pyrolytic graphite  (a form of specially manufactured carbon).

barblue

Q .

What's so special about pyrolytic graphite?

A .

What's so special about pyrolytic graphite?

A few materials can be made to levitate stably above a permanent magnet, or to stably levitate a permanent magnet over it. Although magnetic repulsion is easily achieved between any two magnets, the natural shape of the field always causes the upper magnet to push off sideways, so that stable levitation is impossible (see “Earnshaw's theorem”).  Strongly diamagnetic materials, however, can levitate above powerful magnets, and with the availability of rare-earth magnets developed in the 1970's, the diamagnetism of pyrolytic graphite - when it's brought to a very low temperature - makes it perfect for creating this form of levitation.  In addition, the “Meissner effect” can causes a magnet to rise up magically over a some graphite, as the graphite is cooled down to its superconducting range.

dreamstime_xs_160799860

©2021 Levitation Arts Inc.