Home / Health / Scientists Observe Gravitational Instability in Which ‘Bubbles’ of Lighter Sand Form and Rise through Heavier Sand

Scientists Observe Gravitational Instability in Which ‘Bubbles’ of Lighter Sand Form and Rise through Heavier Sand



Gravitational (Rayleigh-Taylor, or R-T) instabilities are produced by the interactions of two fluids of different densities that do not mix — oil and water, for example — because the lighter fluid pushes aside the heavier one. Now, a team of researchers from Columbia University and ETH Zurich has observed an unexpected R-T-like instability in which […]



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