eli5: when a submarine exceeds its crush depth, and it’s crew is killed, what actually happens to them? Do they die instantly or are they squished flat? What happens ?
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Think of pressure change as a blast wave.
A blast wave is a change in pressure in the air. This might help visualize: https://www.researchgate.net/profile/Adi_Singh/publication/334784649/figure/download/fig2/AS:786638879875074@1564560732699/Pressure-propagation-of-a-sound-wave-through-air.ppm
When bomb goes off, the pressure wave travels outwards carries significant energy with it.
When a sub collapses, the pressure wave travels mostly inwards. But it’s still a blast wave.
Sound blast waves can pop eardrums, rupture liquid holding membranes (eyes, brains, bladders, etc) and even break bones.
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