4 ms·
That's not quite right. Even if there were no gravity or other forces, there would be no incentive for matter to go in one direction vs another, regardless of t
by skosch 6y ago
That's not quite right. Even if there were no gravity or other forces, there would be no incentive for matter to go in one direction vs another, regardless of the distribution of matter around it. Over time you'd get a uniform-ish distribution, but that's a question of statistical mechanics, not one of pressure differences.
On earth, matter only rushes to fill vacuums because the surrounding air or water pressure pushes it in.
- jakear 6y agoVacuum doesn’t necessarily mean pressure-vacuum. It roughly means extreme concentration gradient, which is as you’ve described universal.
- xf00 6y ago> but that's a question of statistical mechanics, not one of pressure differences. My limited understanding was that 'pressure' is just a simplified way of speaking about statistical mechanics.