Quick Answer: The Splat the Rat - Eddy current kit demonstrates Lenz's law with a 1 m copper tube and two 'rats', one containing neodymium magnets and the other a metal weight, plus a foam-covered bat.
Last updated: October 2026
Key Features
Two 'rats': one with neodymium magnets, one with a metal weight
1 m copper tube
Foam-covered bat
Magnetised rat takes about 5 seconds to exit the tube
Turns a Lenz's law demonstration into a classroom activity
Technical Specifications
Specification
Value
Tube
1 m, copper
Rats
One containing neodymium magnets, the other a metal weight
Bat
Foam-covered
About This Product
A magnet falls through a copper tube at a slower rate than an unmagnetised weight, and the magnetised rat takes about 5 seconds to exit the tube. The demonstration becomes a classroom activity in which the pupil's challenge is to hit the rat with the bat as it emerges. Besides buyers across India, the Splat the Rat - Eddy current can be exported to institutions in Grenada, Costa Rica, Sri Lanka, Timor-Leste and Australia.
Frequently Asked Questions
Q1. How long does the magnetised rat take to come out of the tube? It takes about 5 seconds to exit the 1 m copper tube.
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