Hydrodynamics demonstrate objects sinking in water with zero drag

“When the ball hits the water it boils a small amount of water immediately around it, creating a layer of water vapour. At the right combination of ball and water temperatures this layer becomes stable, so the ball is completely encased in the gas. We call this a Leidenfrost state.”

Read more at: https://phys.org/news/2017-09-hydrodynamics.html#jCp

 

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