Want to walk like flying coffee without spilling it? Korean scientists teach exclusive secrets

[Global Science and Technology Comprehensive Report] According to the British "Daily Mail" reported on August 11, when walking on the road, the coffee in your hand is easy to spill dirty clothes or burn your hands, which is a big problem in modern life. In response, Korean scientists conducted theoretical analysis and experimental tests, and finally found that the crux of the problem lies in the wrong way people hold cups.

Wanna walk fast and serve coffee without spilling it? Korean scientists teach exclusive secrets

Scientists point out that people tend to hold the handle of the cup or the side of the paper coffee cup when serving coffee, which inadvertently intensifies the force on one side, making the liquid in the cup more violent and increasing the chance of spilling. Therefore, to ensure that coffee does not spill, simply change the grip. The scientists suggest using a "claw-shaped hand," in which the hand covers the mouth of the cup and grabs down on the rim.

Wanna walk fast and serve coffee without spilling it? Korean scientists teach exclusive secrets

But of course, there is also a risk of scalding by steam. Fragile paper cups can also die under stress. So the researchers have a second secret: walk backwards. "By going backwards, we can greatly change the frequency characteristics of hand movements, thereby reducing the chance of coffee spilling," said Jiwon Han, a researcher at the Korean Minjok Leadership Academy.

Wanna walk fast and serve coffee without spilling it? Korean scientists teach exclusive secrets

But it turns out that walking backwards may be even more impractical--because people who trip over rocks or bump into passing colleagues are sure to get coffee spilled all over them

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