And what if we had a material that could be dense enough, that we just didn't discover yet or is on other planets close to us. Could it be possible then?
I see. But its just the Earth's gravity for them. So if you go closer to the gravity plus the huge mass of the material the room is made of, could that have a noticeable differance?
So my idea is: Let's say you are in a room, that is 10km in the ground (so its closer to the center of gravity of earth) and made of Osmium.
Could it be that the room, because of its mass, actually bends the space time with the Earth's help more so time could be running slower for you?
If it is...