Author: Emily Conover / Source: Science News
Save your breath: A new way to make bubbles requires only sound waves.
Scientists made the bubbles in levitated drops of liquid, held aloft with sound waves.
Tweaking the sound waves caused the hovering drop to balloon into a bubble.The team formed the bubbles using a variety of liquids, including water. Increasing the intensity of the sound made the liquid first buckle into a concave shape. Then the sound waves resonated inside the droplet’s newly formed cavity, causing a rapid expansion of…
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