Name: Spinning Water Droplets That Seemingly Defy Physics | ScienceTake
Uploaded: 2020-03-25T02:34:44.000Z
Duration: 2 min 19 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

on a water-repellent surface with a special pattern.

by Chinese scientists investigating new ways

To understand what they did, let’s step back

According to Newton, when an object hits a solid surface,

If the ball travels straight down with no spin,

Theoretically, the droplet should bounce straight up —

of adhesive material on the surface that water sticks to.

The water in contact with the sticky patches

and you change the shape of the dancing droplet.

The researchers made swirls and half-moons

caused the water to behave differently, sometimes even

Scientists also showed how the energy of the droplets

They set up a magnetically suspended surface.

As the droplet landed on the surface and rebounded,

it pushed down the plate and caused it to spin.

are spinning at a whopping 7,300 revolutions per minute.

So apart from creating a water droplet ballet,

scientists have also found a new way to harvest energy.

For now, it’s enough to have the pleasure of watching

the leaps and pirouettes of those dancing drops.

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Spinning Water Droplets That Seemingly Defy Physics | ScienceTake

stuff

material

pattern

straight