Well all the test I have come across have been above the surface. We assume we know how gravity acts internally but this is taken on faith in the mathematics alone.
Not if you are trying to establish the internal gravitational effects on a mass. Does the gradient of the inverse square law peak at the surface for time dilation and then decrease towards the centre of gravity. I don't think anyone can answer this without experimental evidence. This proposition...
I know of experiments above the surface. I was wondering what the results of time dilation experiments would be underground. We assume that it would slow down but if it hasn't been proved experimentally how do we know? It could do 1 of 3 things. 1. Speed up. 2 Stay the same. 3 Slow down. If we...