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Watch sand defy gravity and flow uphill thanks to “negative friction” - Ars Technica
+ 17 more
12/26/23 at 2:00pm
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Ars Technica
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Jennifer Ouellette
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Applying magnetic forces to single iron oxide-coated particles spurs strange collective motion.
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https://arstechnica.com/science/2023/12/watch-sand-defy-gravity-and-flow-uphill-thanks-to-negative-friction/
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