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Floating under a levitating liquid – Nature.com
Manipulation of the effective gravity of an oscillating liquid creates stable buoyancy in the lower surface of a liquid layer levitating above air, allowing bodies to float upside down.

1.Lord Rayleigh. Investigation of the character of the equilibrium of an incompressible heavy fluid of variable density. Proc. Lond. Math. Soc. 14, 170177 (1883).
MathSciNet
MATH
Google Scholar
2.Lewis, D. J. The instability of liquid surfaces when accelerated in a direction perpendicular to their planes. II. Proc. R. Soc. Lond. A202, 8196 (1950).
ADS
CAS
Article
Google Scholar
3.Burgess, J. M., Juel, A., McCormick, W. D., Swift, J. B. & Sw…
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