Description

Altay Waltenhofen’s Pendulum emulates the
historic experiment to study Foucault’s currents. It
is constituted of a plate of a diamagnetic material
free to oscillate between the polar expansions
of an electromagnet. Oscillations are slightly
damped when the electromagnet is off and
dramatically damped when the electromagnet is
turned on. Damping is due to currents induced
in the plate (Foucault currents or Eddy currents)
and to their verse which opposes to the change
of magnetic flux through the plate. Substituting
the solid disc with a brush disc, we see that the
damping decreases because the eddy currents
can no longer flow.
DImensions: approx. 30 x 15 x 10 cm