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Monday, February 3, 2014

Here is a Cool Science Demonstration

From Truth Seeker Daily:

When a magnet is dropped down a conducting copper pipe, it feels a resistive force.... The falling magnet induces a current in the copper pipe and, by Lenz’s Law, the current creates a magnetic field that opposes the changing field of the falling magnet. Thus, the magnet is “repelled” and falls more slowly.
Video at the link.

(H/t Instapundit)

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