Eddy Current Demonstrator, 12" Long, 1 Each

The Eddy Current Demonstrator by United Scientific demonstrates Lenz’s Law with a 12" copper tube and two look-alike slugs with rubber end caps. The plain steel slug drops through quickly, while the neodymium magnet falls very slowly due to eddy current braking in the copper wall. Physics teachers use it for clear, memorable lessons on electromagnetic induction and magnetic braking, with an activity guide included.