| Demonstrates: Eddy Currents, Faraday's Law, Lenz's Law |
| Description: When the solid aluminum paddle swings past the electromagnet, eddy currents are induced. The magnetic forces on these currents oppose the motion and the the pendulum stops. Very dramatic if the pendulum is released from a large height! When the paddle with closed slots is used, the path length and therefore resistance for the induced currents increases, producing a smaller damping. With the open slotted paddle, almost no damping occurs.
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| Instructions: First release the pendulum with the magnet off to show that it swings freely.
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| Items Used: Large electromagnet with pendulum apparatus, various interchangable aluminium paddles Notes: Open top doors to get into 103. Unavailable in 114/116. Math Description: None.
Size: 9' h x 30 Condition: Good. Hazard: Toe stubber - move slowly.
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| Schematic:
None. Tech Specs:
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