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Hand-Cranked Magnet Machine
Posted: 04 June 2011 12:43 PM   [ Ignore ]
Five Star Member
Total Posts:  5155
Joined  2005-01-27

Very entertaining.

This machine manipulates small spherical rare earth magnets, slicing one at a time from the end of a long chain, moving it around a bit, then dropping it back to re-connect at the tail end of the chain.

It also demonstrates a little snippet of science called eddy currents. Watch how slowly the magnet falls through the aluminum tube compared to falling through air: the falling magnet generates an electrical current in the tube, and that current in turn generates a magnetic field that opposes the movement of the magnet, slowing it down dramatically



“By the sweat on our brows, and the strengths of´╗┐ our backs…Gentlemen. Hoist the Colours! And you, madam, I warn you, I know the entire Geneva Convention by heart!”
Trust me.

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