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Q&A Air Pressure in a Purely Underground Setting

I'm working on a completely flat, underground world, where "world" means "universe" rather than the equivalent of "planet". Here's what I have so far: The world is a flat, apparently infinite (in...

2 answers  ·  posted 5y ago by Kinxer‭  ·  last activity 5y ago by Kinxer‭

Question physics underground nonspherical-worlds