Principle Demonstrated: Lenz’s Law Safety Considerations Don’t let the magnet hit a bare table. They will chip. Put a fluffy towel on the table top. Presentation This is a simple magic trick. It works every time because of physics. See the video below to see how to present the trick. I do this at the beginning of the unit on magnetism. At the end of the unit I ask them how the trick worked. Materials: Newton’s Nightmare magic trick from PenguinMagic.com ($15) http://www.penguinmagic.com/p/841 Video http://www.penguinmagic.com/p/841 What it demonstrates: As the magnet descends through the tube counter magnetic fields are setup. The fields slow the magnet’s descent. Extensions None. |
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