While studying the physical dynamics of sloshing liquids, researchers found that five layers of foam bubbles limited the height of waves ten-fold as compared to plain liquid.

Study co-author Emilie Dressaire, an assistant professor of mechanical and aerospace engineering at New York University,  said, "What we observe in our cups of coffee, this happens every time you're carrying liquids in a container that's partially filled."

Researchers also discovered the foamy head of a beer has advantages similar to those of the milk bubbles that sit atop espresso.

"While I was studying for my Ph.D. in the south of France, we were in a pub, and we noticed that when we were carrying a pint of Guinness, which is a very foamy beer, the sloshing almost didn't happen at all," Alban Sauret, a researcher at the French National Center for Scientific Research (CNRS) said supporting the finding.

But more than just keeping the skin of caffeine fiends burn-free or keeping beer off the bar counter. The research is also expecting to have industrial applications, like subduing the sloshing of oil and other potentially dangerous substances during transportation on trucks, ocean tankers or trains.

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