Here is a magic toy that lets you mesmerize your friends with science. Royal Magic Newton’s Nightmare puts on a gravity defying show. You get two weights to drop through an aluminum tube, only one goes faster than the other.
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Newton's Nightmare physics magic toy
Of course, there is no sorcery involved here. The second weight is magnetic, so it reacts to the aluminum tube, which leads to it dropping slower. You can read up on Lenz’s Law and eddy currents to get a better understanding of how this all works.
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