Ask HN: Is it possible to blow up a balloon while you’re under water?

4 pointsEleanorLily5y ago3 comments

3 comments

3 comments · 2 top-level

simonblack5y ago· 1 in thread

Depends on the air-pressure in the lungs. If you inflate them from a scuba tank, possibly. If you take a breath and then jump in the water, no.

If on scuba this is trivial. I do it all the time for training.

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