Whatever floats your boat? Scientists defy gravity with levitating liquid

Researchers use vibrations to make toy vessels bob about under floating layer of liquid

Scientists have turned the world upside down with a curious quirk of physics that allowed them to float toy boats the wrong way up beneath a levitating body of liquid.

In a striking demonstration of the mind-bending effect, the boats seem to defy the laws of gravity as they bob about on the water above them with their sails pointing down.