So I’m aware it’s because of pressure difference, but why does that matter? Why does the pressure try to equal out immediately and not just slowly wait as things move into it like they would in ambient pressure?
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Air is a bunch of randomly moving particles. They bounce (sort of) off each other and the container all the time, and when you put a hole in the container, the ones that’d bounce off the container there instead go out. Since now they’re not in their original location, others can spread out to there, and subsequently outside.
With ambient pressure, the leaving particles are replaced, for the most part, by the particles coming in from outside, so you don’t have a massive move towards the hole.
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