Water doesn't splash in vacuum

[sniffer]

I read in New Scientist that water does not splash in vacuum. In experiment, they reduce the pressure down to 0.2 bar and water does not splash. But there is no detail explanation why this happens.

How do you explain this phenomenon?

 

[Q_Goest]

There was a discussion of this here:
https://www.physicsforums.com/showthread.php?t=69402

 

[charng]

I can explain this phenomenon by looking at the properties of water and the conditions of a vacuum. Water has a high surface tension, which allows it to form droplets and resist breaking apart. In a vacuum, there is no air pressure pushing down on the water surface, which would normally help to break apart larger water droplets. Additionally, without air molecules present, there is no medium for the splashing water to disperse into. This means that the water droplets remain intact and do not splash.

Furthermore, the reduction of pressure to 0.2 bar creates an even lower pressure environment, making it even more difficult for the water droplets to break apart. This is because the lower pressure means there are even fewer air molecules present to interact with the water surface and cause splashing.

In conclusion, the lack of air pressure and molecules in a vacuum creates an environment where water droplets are unable to break apart and splash. This is due to the properties of water, such as its high surface tension, and the absence of a medium for the water to disperse into.