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The Levitating Liquid Pendulum : how can rapidly shaking a liquid make unstable layers sable ⇔ rapidly shaking a pendulum make the top equil. pos. stable - Steve Mould
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Inverted pendulums stabilization
inverted-pendulums -
Anti-gravité : comment un bateau peut flotter à l'envers
https://theconversation.com/anti-gravite-comment-un-bateau-peut-flotter-a-lenvers-147298 -
Floating under a levitating liquid
https://arxiv.org/ftp/arxiv/papers/2003/2003.04777.pdf