A simple but effective device for demonstrating Lenz’s Law using eddy currents induced in the wall of a copper tube by a falling magnet. The demonstrator consists of a 12″ long copper tube and two apparently identical metal slugs with rubber end caps. One slug is plain steel and falls through the copper tube quickly. The other slug is a strong neodymium magnet that falls very slowly through the tube due to the braking effect of eddy currents. Includes activity guide.
Features
- A simple but effective device for demonstrating Lenz’s Law using eddy currents induced in the wall of a copper tube by a falling magnet.
- The demonstrator consists of a 12″ long copper tube and two apparently identical metal slugs with rubber end caps. One slug is plain steel and falls through the copper tube quickly. The other slug is a strong neodymium magnet that falls very slowly through the tube due to the braking effect of eddy currents.
- Includes detailed activity guide with teacher activities
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