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Waltenhofen’s Pendulum - code: 4640.80
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.
experiments
- Faraday-Neumann-Lenz’s law
- Foucault’s (or Eddy) currents
© 2009 Altay Scientific S.p.A. con Unico Socio P.IVA 08190291008
