Eli5: Underwater pressure

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Why do people, submarines, and essentially everything that dives too far into the water get crushed? I get that it’s the weight of the water, but shouldn’t the pressure just come from the top and not everywhere, as if there were a weight on you?

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Anonymous 0 Comments

It’s a matter of pressure differences I think. Think about how a space ship is pressurized and how the air is trying to get out in every direction. It works in reverse when the pressure is greater outside the object than in. Technically yes it is pushing down on it, but liquids don’t have a ridged structure, so it’s going to try to fill that lower pressure area from all directions.

The universe loves entropy, so every system is being acted upon in order to try and equalize. I don’t have a degree on this topic though so I’m sure someone can explain it better.

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