Lenz’ Law Apparatus

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470134-998EA 24.2 USD
Lenz’ Law Apparatus
Educational Materials Physics Educational Materials Electricity/Magnetism Learning Activities
Simple Version of Foucault’s Early Experiment

  • Illustrate the principle used in mechanical balances, high speed trains, and vending machines with this clever demonstration
  • Pared down to the essential elements, this lab uses an aluminum disk and a neodymium magnet to visually prove Lens’ law
The included disk rotates freely on a shaft that fits into the plastic base. When the magnet is brought near the disk it stops instantly. The induced electric currents in the aluminum disk are called eddy currents, and their direction is given by Lenz law. The magnetic field caused by the eddy currents interacts with the magnetic field to produce an opposite force that slows down the rotating disc. Includes instructions.

Caution: WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.