/sci/ - Science & Math

>>10021667
Pressure is a vector that points in all directions, right?

Well, in the left side, the red arrows are the downward and sideward forces caused by the weight of the water above, whereas the green arrows are the forces that push the water up originating from the resistance of water to compression. The purple arrows are the forces exercised by the glass wall.

As you can see, on the left side it's the water columns that push down (weight) and the water that pushes up to resist compression.

On the right, it's the GLASS CEILING that pushes down onto the water. and the force is equal to the force with which the water pushes down in the narrow tube, else the water would just flow up the narrow tube.

Result? same pressure.

this is a backwards and stupidly simplified explanation. But I hope it might just be stupid enough that OP will understand.