Eli5 If putting something under pressure increases the temperature why is the bottom of the ocean so cold?
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Water doesn’t compress. Or rather, it’s maximum density is at 4C. regardless if it’s on the surface of the ocean or at the bottom of the sea.
The reason YOU feel pressure when you dive deep is because you are not a solid nor are you all liquid. You have lungs that require air to keep you alive. If you free dive on a single breath, the air in your lungs gets compressed. The only way you can take a breath under water is if you breath in compressed air from a scuba tank, but you better keep breathing on the way back to the surface because if you hold that breath, the air will expand as you surface and you will burst your lungs.
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