Eddy current (Waltenhofen) pendulum, with bearing

For demonstrating eddy currents and Lenz's rule in a permanent or electromagnetic field;
the slotted pendulum plate swings unbraked through a magnetic field, whereas the full pendulum plate is strongly decelerated.

3 pendulum plates made of aluminium, 1 x full, 1 x perforated, 1 x slotted
Pendulum plates: 290 x 80 x 3 mm
1 stainless steel pendulum bearing
Pendulum rod: 10 x 60 mm
Total weight: approx. 444 g

Note:
A strong, homogeneous magnetic field is required to carry out the experiment.
This can be generated using two strong plate magnets or two coils with a U-core and pole pieces.