College of Liberal Arts & Sciences
5K20.23 - Lenz's Law - Zig's Tube
The "V" channel and magnet ball bearing are fixed inside a Plexiglas tube. Rolling the magnet down the "V" channel no matter what the angle will show considerable damping. Turning the tube 180 degrees, so the ball does not roll on the channel, will allow the ball bearing to roll without damping.
- Zigmund Peacock, "A Student-Proof Lenz's Law Demonstrator", PIRA News, Vol. 20, # 1, p. 6, 2007.
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