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(YouTube) Video Sail away floating upside down in levitating liquid   (youtube.com) divider line
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491 clicks; posted to Fandom » and STEM » on 30 Sep 2020 at 10:27 PM (7 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook




The weird physics of upside down buoyancy

Liquid can levitate and boats can float upside down in this gravity-defying physics experiment. Researchers in Paris have been investigating the effect of vertical shaking, which can be used to suspend a layer of liquid in mid-air. They have discovered a peculiar phenomenon that allows lightweight objects to float on the bottom surface of this liquid, with a kind of reverse-buoyancy. This counter-intuitive behaviour is a result of the constant vibrations which changes the forces acting on the floating objects.

Read the full paper here: https://www.nature.com/articles/s41586-020-2643-8

Sign up for the Nature Briefing: An essential round-up of science news, opinion and analysis, free in your inbox every weekday: https://go.nature.com/371OcVF


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