3 ms·
I see what you're saying wrt the difference. Thank you. The air once at the top wouldn't experience any expansion if it was the same density as the outside air
by foota 9y ago
I see what you're saying wrt the difference. Thank you.
The air once at the top wouldn't experience any expansion if it was the same density as the outside air, but what about the energy it picks up from expanding? Wouldn't it still have that? Of course it will have lost some from fighting gravity.
- mikeash 9y agoIn a stable atmosphere, all the various effects cancel out.
- pbhjpbhj 9y agoBut it's not a stable system, it's being driven with heat from the base. A simple hydrodynamic [physical] model should be easy to build in the lab.
- mikeash 9y agoThe chimney described here supports itself with the airflow it generates, which means it has to operate 24/7. That means it has to operate in stable air. It can't.