How is this aquarium possible?
Shouldn't all the water run out
(3 votes)
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In order for the water to run out, there should be something that fills its place. As long as the vessel is up there, nothing can be done. Only when there is an opening can air flow in and water run out below.
Continuation:
Now you can ask: Why doesn’t the water just drop down and leave empty space at the top of the vessel, so a vacuum? This does not happen as long as the air pressure that presses on the water below is stronger than the weight of the water that pulls it down.
As soon as the glass tower exceeds approx. 10 meters, the weight of the water in it is stronger than the air pressure and the water drops – as far as the water column is about 10 meters high. At exactly 98,0665 milllibar air pressure, the water column is exactly 10 m high.
You can say: The air column from here down to space weighs about as much as a 10 meter high water column with the same cross section.
https://de.wikipedia.org/wiki/Meter_Water Column
https://de.wikipedia.org/wiki/Bar_(unit)
This is a fish tower – the tower is up and has a valve at the top to suck the air. The air is pumped out at the top and the water follows udn remains through the vacuum.
The air is filtered off at the top and the vacuum carries the water column.
Oh, okay.
No, the vacuum in the aquarium pulls the water up. As soon as you take a hole in it, everything goes out.
Principle is the same as in Drinking with a straw
Why exactly would it do that?
Hydrostatic paradox