eddy currents

Baltimore Key Bridge #22 – All that “impossibly wilted” structural steel, what could cause such crack-free, insta-rusted, multi-dimensional warping and distortions?

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Index & Summary https://soundquality.org/baltimore-key-bridge   https://www.youtube.com/watch?v=sB1UwdFART8    

Eddy Currents, Magnetism, Gearless Magnet Bike

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https://www.youtube.com/watch?v=yCh9Plk7DSw   “Hey that’s pretty neat to learn about the alternating polarity creating a greater resistance. I didn’t think of that. You could print a little cube grid that holds multiple magnets with opposing fields and probably get a much more impressive slow down when dropping it down a pipe.”