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Levitations at home
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Levitation

At home

To make superconductors levitate: you can find a few resellers on the internet that sell different superconductivity kits. But you will also need liquid nitrogen and you have to be with an authorized person in a professional context (high school, laboratory, university…) to have nitrogen delivered.

Experiment yourself the Meissner effect !
Drag and drop the magnet on the superconducting pellet and cool it down with liquid nitrogen : the magnet levitates !

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Experiment pinning by yourself !
Drag and drop the magnet on the superconductor pellet and cool down with liquid nitrogen : the magnet is pinned ! You can also use a block to pin the magnet over the floor (remove the block after cooling). Note that if the pallet is already cool, you won't be able to put themagnet on the pallet.

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Here is a list of superconductor suppliers:

  • Can superconductors (http://www.can-superconductors.com) is a Czech firm that sells different types of superconductors: weak pinning superconductors for Meissner effect, single domain crystals with strong pinning for trains and strong levitation, BSCCO bars to measure the resistance in four points . See the shop link : http://shop.can-superconductors.com/index.php

  • ATZ, a German firm (http://www.atz-gmbh.com) that builds prototypes using high Tc superconductors and that also sells disks with strong and medium pinning. Use strong pinning disk to make superconducting trains (diameter 30mm, thickness 12mm cut in two 6-mm slices to make 2 disks, with paraffin wax to enhance the life), use medium pinning disk to make levitation experiments while cooling (diameter 40mm, thickness 12mm cut in two 6-mm slices to make 2 disks, with paraffin wax to enhance the life).

  • Supermagnete to buy powerful magnets (http://www.supermagnete.de/fre). It is a bit expensive, but they have a lot of choice and are very responsive. Plus the estimate is quick, since the prices are written on the website…

Make graphite levitate by diamagnetism

Visit this site.

To make ping pong balls levitate

Visit wikidébrouillards.

Liquid nitrogen

You have to be with an authorized person in a professional context (high school, laboratory, university…) to have nitrogen delivered, for instance by SOS Azote or Air Liquide

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CNRSSociété Française de PhysiqueTriangle de la physique