Neodymium magnet defies gravity

eddy current

No, we’re not going to show you how to pull a dollar out of someone’s ear, or how to come out unscathed after an assistant brings a saw down on your abdomen, but here’s a nifty bit of science that you can impress your date with. If your date is into this sort of thing.

What happens when you drop a stack of neodymium magnets through a copper pipe? Gravity would dictate that the magnets fall to the floor in a clunky fashion, but in reality they float down the tube. While the neodymium magnets are not actually attracted to the copper, they produce eddy currents that buffer the fall. Pretty neat, huh? Check it out in the video.


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