3B Scientific Diamagnetic Levitation Apparatus - Manual (Page 3)

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The point with the lowest potential energy is about
midway between the two graphite plates. In this point
the NdFeB-Magnet is in a stable state of equilibrium
and is able to levitate at this location.
4. Operation
•
The apparatus is supplied as a sealed unit. It may
be opened to permit experimentation.
•
Insert the long arm of the socket wrench into the
four holes in the side of the base of the apparatus.
Unscrew the screws three full turns. Turn counter-
clockwise.
•
Place one hand on the base, and using the other
hand gently lift the bell housing.
•
Remove the loose side panel. The graphite plates
may now be replaced by the plastic plates.
•
Reassemble the apparatus in the opposite way. Care-
fully tighten the four screws. Do not use excessive
force to avoid damaging the bell housing.
•
To adjust the position of the NdFeB-magnet loosen
the upper hex nut and move the ring magnets with
the help of the lower hex nut up or down to de-
crease respectively increase the attraction. If nec-
essary hold the retaining ring with one finger. Do
not use tools to tighten the nuts.
5.Sample experiments
•
Replace both graphite plates with the plastic plates
and try to put the NdFeB-magnet into a state of
equilibrium.
•
Repeat the experiment with one graphite and one
plastic plate (top or bottom).
•
Discuss the results on the basis of the theory.