Bubbles that break rules: A fluid discovery that defies logic

A team led by researchers at UNC-Chapel Hill have made an extraordinary discovery that is reshaping our understanding of bubbles and their movement. Picture tiny air bubbles inside a container filled with liquid. When the container is shaken up and down, these bubbles engage in an unexpected, rhythmic "galloping" motion--bouncing like playful horses and moving horizontally, even though the shaking occurs vertically.