[CS_SJ (OP)]

Was wondering if you smart people could solve a question. If a diver went down deep, say, 200 feet, and, while down there, he opens a strong jar and fills it with water to the brim and seals it.

Then, he comes back to the surface and opens it, will the water burst out of the jar because it’s under pressure? Or will it just behave like a normal jar of water?

I should note that in this hypothetical scenario, there was no air bubbles in the jar, nor did the jar compress/expand.

Very interested in anyone has some input….would be greatly appreciated!

- MT

[alancalverd]

Yes, water is compressible but not very much.

It has been a problem when recovering deep demersal species. IIRC the first complete and live coelocanth was something of a surprise as fishermen had been trawling apparently dead ones for many years and believed the species was actually extinct.

[paul cotter]

According to a quick google search the bulk modulus of water is 2.2Gn/m². I don't have the time or motivation to do a calculation for 200ft -0 at the moment. I'm sure some other member will oblige.

[Bored chemist]

It will depend on how strong the glass jar is.