this post was submitted on 18 Dec 2025
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What's the updraft situation like in the bottomless pit?
In a normal deep but endful pit, you'd feel an increase in air pressure as you got deeper as you floated slower and slower. Eventually there will be enough bodies forming a buoyant layer (or, simply bodies lining the bottom of the pit) that you could carve climbing apparatus out of bones and climb back up, feasting on raw flesh as you ascend the wall of the pit. That, or the heat from the biomass of bodies would lift you and your parachute up a decent amount.
In a bottomless pit, there is no increase in air pressure, the air just falls right through with no resistance because it hasn't reached the end. You'd think that this creates a huge suction at the top of pit, sucking people into it, but no because the air just falls at the same rate that cold air leaves a room in a house, creating perhaps a slight draft into the pit. No bodies at the bottom, no layer of buoyant air, you're just falling. Might as well control your ascent, with some careful parachuting, hook up with some hotties mid-fall, and then embrace the eternity of it
This guy bottomless pits.
It's how I met your mother
This guy fathers. Hi dad.
Bison: "Bi son? Bye son."
If there is an infinite column of air, the air entering or leaving the pit should be more or less constant, all else being equal outside the pit. But if there is a finite column of air falling into a vacuum, then there is an infinite vacuum, and I think the pit starts sucking air at the speed of sound.
Actually, there's a finite amount of air in the pit, but it's not falling. It's already settled around the planet's midpoint. The pit keeps going forever, but gravity starts pulling the other way after a while
A hole through a planet is not a bottomless pit. Like any normal hole, it is bounded on both ends. A bottomless pit has one bounded end and one unbounded end.
What if the pit is subject to shell theorem?
I'm ignoring gravitational changes and changes in surrounding mass. AFAIK this is an infinite portal to hell that's not even bound to this earthly plane.
Otherwise I'll have to assume an infinite mass towards the infinite end of the tunnel, which would create a compounding gravitational pull that would be infinite, and .... *loses interest and watches paint dry*
lol no. Air would absolutely flow into the pit at a rate relative to its pressure. It absolutely would not simply drift into a bottomless pit that would never see backpressure... That's... just exceptionally stupid.
Edit: Yes, my comment was wrong.
No. That's not how air works. At all. It's the same as opening a portal to space. It's not about infinities. It's about how air fundamentally behaves.
You'd have to ask the inspector
This one’s no good I can see a bottom.
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