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I was watching this documentary about time:
It shows that gravity does effect time, and the higher the force the slower time will pass and slower you will age.
On earth we are also pulled by gravity and the closer we get to the center of the earth the stronger the force of gravity. Therefore if you were to swim really deep in ocean would that have the same effect on time as it would do for spaceship orbiting black hole?
I know that there is lava down there but in general would swimming around the center of earth have an effect in time?