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Shouldn't the air pressure crush them until the density inside equals the density outside? Why does helium balloon behave so differently from a vacuum-filled balloon?

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[-] skisnow@lemmy.ca 2 points 1 day ago

That’s a great point about the water. In OP’s mental model, an air-filled ballon should be almost completely crushed in even the shallowest water.

this post was submitted on 10 Oct 2025
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