Can one stand on pressurised water?
In a movie, I saw a submarine with a small hole at its bottom, through which the people inside observed the water and engaged in various activities. This got me thinking: since we can’t stand on water because it is too light, could we stand on highly pressurized water, like that found deep in the ocean? I understand that the pressure at such depths would be lethal to a person, but if someone were to enter a submarine with a hole and place their foot on the water from that hole, would they float, or would something else happen?
2 Answers
No, they would still sink. Water has pretty much the same density for a very large range of pressures. The pressure at the deepest part of the ocean is 1,086 bars, and about 1 deg C. The density is only 0.3% more than at the surface.
In other words, it’s very cold, but still practically the same density. You can’t stand on it.
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