Eddy Current/Lenz's Law Kit

This kit consists of two tubes (one copper, one plastic) and two discs (a supermagnet and an aluminium disc of similar size). When the supermagnet is dropped down the copper tube, it falls much more slowly than might be expected. The other tube/disc combinations do not show this effect, since eddy currents are only produced using the copper tube and the supermagnet. Tube Dimensions (L): 250mm.