Hall Effect Apparatus, Features: n-type GaAs Hall sensor chip, Two-axis mechanical traverse for field plotting, 3-1/2 digit current and voltage meters, Metal storage case for the Hall Effect board, Reversing switch for exploring the elimination of systematic error
Barlow'S Wheel, Equipped With Neodinium-Ironboron Magnets That Generate A Strong Magnetic Field Over The Wheel That Is Therefore Set On Motion When Crossed By Currents. Requires Aa Batters, Discover Lorentz Force Without Using Mercury
Racing Rings consists of three rods one each of copper, aluminum and PVC, Ring magnet is dropped down the PVC rod, it falls unobstructed, Two metal rods create an induced magnetic field to that adds resistance to the rings travel, metals are different, they fall at different rates