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[70] LevitationAuthor: José Luis Leon, Fuengirola, Spain, jl_ls@hotmail.com How to make a little graphite disk float | ||||||||||||||||
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Material used:
Use the compass to determine the north and south poles of the four cube magnets. Once you've determined the poles, it's helpful to mark them on the magnets. In this case I placed a small sticker with the letter N or S on the proper pole of each magnet.
Place the magnets as shown in the photo with the alternating poles face up. Note: the magnetic field created by these magnets is very strong so be careful of your fingers! The alternating pole positioning is critical for the levitation effect: if the magnets are placed in a different order, the graphite disc will not levitate.
Remove the small stickers and place the graphite disc carefully over the four magnets. You will observe that the graphite disc levitates above the four magnets endlessly (yes, for minutes, hours, days, weeks, months...) The height of the levitation is approximately 2-3 millimeters and clearly visible. We can even push the tiny disc down with a finger, let it go and observe how it climbs again to levitate in the same place as before.
Place the whole construction into a transparent box to prevent dust and dirt collecting. I keep the box in good view for my friends - a unique and eye-catching decoration. To prevent the magnets shifting in transport and to ensure that they remain centered, I placed a washer (or another small piece of metal) on the underside of the box.
We, at SuperMagnete, have another small tip for spoil-sports and others who find no pleasure in tinkering: In the Swiss online shop Klangspiel you can order the complete device in a convenient package.
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