Image for a moment that the gravity magic of Lord of the Rings or Elden Ring is real. You can create a bubble of a few cubic meter inside of which gravity instantly ticks over to 4G. What happens to air in this sort of a situation? Is there cavitation at the top of the boundary? Does the system pressurize? Does it turn into a dyson bladeless fan? Does it catapult you up like a rocket? Does nothing happen?Keep in mind this is magic, no curvature, its a step transfer from 1G to 4g, there is no slope.
>>16840138>Is there cavitation at the top of the boundary?NoAtmosphere at earth gravity is anywhere from 10km to 100km deep depending on your use case, double gravity roughly speaking packs the same air in half the space so even at 4x that same column would extend at least 2.5km up. For a closed bubble of 2 meters in height the top would "feel" the same as if you climbed up to 8 meters in real life so you would not feel a thing from that. You could certainly measure the effect but you wouldn't be able to intuit the pressure difference. >Does the system pressurize? Does it turn into a dyson bladeless fan?If the magic bubble is permeable to air then ye it would turn into a fan of sorts. Air would drop into it from the top and then exit from the bottom. Small bubble like that would not accelerate much air nor to great speeds but I presume you could feel it moving.>Does it catapult you up like a rocket? Does nothing happen?Nothing would happen to you except of course being slammed to the floor by the 4 gravities which is what the wizard was aiming for, he wins you lose.
>>16840218Does anything interesting happen due to the fact that in this hypothetical the change is instant and discontinuous rather than being steeply curved?
>>16840343No
