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When Water Levitates
Ohio Ag Connection - 05/17/2017

Have you ever seen a drop of water navigate a maze?

It's possible, thanks to the same phenomenon that lets you know if a griddle is hot enough for pancake batter.

Water droplets that dance and skitter across a hot surface instead of boil away on the spot are experiencing the Leidenfrost effect. Understanding Leidenfrost -- first described more than 200 years ago -- helped engineers make more efficient steam engines.

Today, scientists are using high-speed cameras to better characterize how superhot water behaves on metal surfaces. The investigation might lead to improvements in power generation.

Watch the superhot dancing droplets here: https://youtu.be/9tlIWlGvkRc.

Reactions is a video series produced by the American Chemical Society (ACS) and PBS Digital Studios. ACS is a nonprofit organization chartered by the U.S. Congress. ACS is the world's largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.

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