Splat The Rat

Description

Lenz’s Law can be demonstrated using the standard Eddy
Current Tubes whereby a magnet falls through a copper
tube at a slower rate than an un-magnetised weight.
The demonstration lends itself to a fun classroom activity
(as featured in the Lascells Science Silly Bus Show) based
on the village fete challenge of Splat the Rat.
Two ‘rats’ are supplied, one containing strong neodymium
magnets and the other just a metal weight.
1m of copper tube and a foam-covered rounders bat
completes the kit.
In use, the challenge for the pupil is to hit the rat as it
emerges from the tube.
It gives a dramatic demonstration of Lenz’s Law since the
magnetised rat takes about 5 seconds to exit the tube.
• Fun and dramatic demonstration of Lenz’s Law
• Interactive and entertaining demonstration of induced
currents and magnetic fields.
SP4-1055