It doesn't vent because it's at its limit of molecular breakdown and at that point, it freezes. It goes dormant.
It stacks.
It does not pressurise like in a gas bottle encased in metal.
Try and get your head around that and then it could help you understand.
We already know that the atmosphere has a pressure gradient, that it is at a greater pressure and density the lower it is.
So you telling us "it stacks" is entirely useless.
What you need to do is explain WHY.
Why does the high pressure air at the bottom stay high pressure air? Why doesn't it push upwards to equalise the stack?
Alternatively, if it can magically just come down to Earth and be at that pressure, why can't the layer above magically come down and sit on it and be at that equal high pressure?
This is what people are asking for, an explanation for what causes this "stacking", this observed pressure and density gradient.
And this is what you refuse to provide.
If you want to help people understand, you need to provide an explanation, not just a repeat of the observation we are asking you to explain.
Then put them in a jar and vibrate the jar and see the layers form into their respective densities and displacement of each other.
Again, this is stating an observation, an observation you have no explanation for, but which gravity explains trivially.
(Also, in this case, that doesn't actually happen unless they have a similar particle size).
It's simple stuff that many will overlook and use gravity as a reason for it, even in a jar.
Because gravity actually explains it.
Can you provide an explanation?
You put these things in a jar, and shake the jar, why does this cause the dense layer to go the bottom of the jar (and you can turn the jar around and still have it go down to the observer outside the jar)?
Why doesn't this happen in a vomit comet during a 0g parabola?
Again, you have no explanation. You are just repeating observations.
There is never a true terminal velocity.
There is a true terminal velocity, but even if there wasn't you are just dodging the issue.
If the air is pushing things down, why does it then resist pushing things down to slow it down?
This is another thing that makes perfect sense in the mainstream model, but no sense in your fantasy.
Nobody has a clue what the centre of the Earth is. It's all storytelling and guesswork.
But seeing as we're arguing points, then what is it at the centre of Earth that supposedly pulls everything towards it?
Your wilful ignorance doesn't mean everyone is wilfully ignorant. There are observations which can be made which don't requiring going to the centre to obtain information on what the centre is.
But we don't need to know what the centre of Earth is.
What is important for this discussion is mass. So the only relevant question would be what is the mass of Earth.
And notice here that it isn't magically just the centre pulling things towards it.
It is all mass is attracted to all mass.
And that includes the mass of the crust (i.e. the outer layer of Earth).
But the math for a spherically symmetric object can be simplified to treating it as a single point at the centre.
So even if below the crust was entirely hollow with NOTHING inside, we would still have the mass of the crust causing a force directed towards the centre of Earth.
Feel free to duck this or tell me you refuse to answer and I'll ask someone else. But remember, you really need to answer if you want to climb the higher podium in your mind.
The distinction is that you are asking questions to deflect from the topic.
All the layered molecules in the stacking system above which the lower molecules must resist both ways. Use a foundation to resist the above and so on and so on all the way up into less and less pressure based on fewer layers to resist as the stack rises.
All molecules at all points in the stack must resist both ways.
Consider the next layer up, it has the high pressure layer below trying to push it up and the lower pressure layers above trying to push it down.
The higher pressure below should overcome the lower pressure above and push it up.
So it doesn't just have to resist the above.
It needs to resist the force from above and the force from below.
If it can't resist the force from above it is pushed down.
If it can't resist the force from below it is pushed up.
So what is giving it that extra ability to resist the push up from below? We know it can't simply be the push down from the air above.
Until you actually address this issue, people will keep asking.
Compressive force due to the amount of molecular layer of different densities above.
And again, you implicitly appeal to gravity.
You are appealing to the force of gravity forcing the layers above down, which they layers below need to support.
If it is just the push from above forcing it down, then each layer just transfers that force down, there is no increase.
Give me a gas law and explain what's happening.
How about this one:
F=-A*DeltaP.
This is saying that the force on an object is equal to the cross sectional area multiplied by the difference in pressure, with a negative sign to indicate the direction of force is opposite the pressure gradient.
At its simplest level, it is saying that high pressure pushes towards low pressure. The net force is not based upon the absolute pressure, but the pressure difference. And as the area increases, the force increases.
e.g. if you have an object placed some where with a cross sectional area of 1 m^2, and on its left there is a pressure of 0.5 bar, and on its right there is a pressure of 2 bar, then there is a pressure gradient of 1.5 bar, being higher on the right, so there will be a force to the left equal to 1 m^2*1.5 bar = 150 kN
This also explains why planes fly, with the higher pressure below the wing pushing the plane upwards.
This also explains why the atmosphere in general pushes objects upwards, with the higher pressure below creating an upwards force.
If that was the case we would observe a quite substantial pressure gradient across the dome.
We do.
No, we don't.
The pressure at sea level is basically the same, regardless of location.
To a certain height, yes.
Which again means, we have the same molecules, yet they are at a different pressure. Why?
A push up will only happpen if energy is applied.
A push up happens with the energy from the high pressure air below compared to the low pressure air above.
If you think that isn't enough, then consider a helium filled balloon.
What is providing the energy for it to go up? Nothing other than the high pressure air below it.