Posted by duncan webster on 25/06/2023 00:54:08:
Posted by Nicholas Farr on 24/06/2023 16:59:29:
…….. . Unlike a compressed gas, there isn't an equal pressure in all directions in a column of water…..
Regards Nick.
I think you'll find that at a given depth the pressure in a liquid is the same in all directions, but it gets higher as you go deeper.
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… and I think Nick makes a very good point, Duncan
Difficult to visualise, but all about vectors
A gas exerts the same pressure in all directions, because the pressure is generated by molecular activity. But the hydrostatic pressure is dominated [umpteen orders of magnitude] by Gravity, and is therefore directional.
As I opined previously … the column of water will descend to occupy the vacant space before it has time to do any significant shape-changing.
No … I am not an expert, I am just here to improve my own infinitesimal comprehension of things by discussion [the most useful part of which involves ‘listening’], so I was grateful that Nick, with his hands-on experience, seemed to endorse my hypothesis.
Understanding Nature is a work-in-progress, but barely started !
MichaelG.