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NoetherFan447 karma

NoetherFan57 karma

If a police officer asks my name or other information, what do I have to tell? What are the ramifications of not speaking to him or refusing to answer any given question?

NoetherFan43 karma

Can I be taken to the police station and/or arrested for remaining silent or otherwise compelled to leave where I am? Does this vary state to state?

NoetherFan4 karma

Because the gravity equations satisfy laplace's equations, gravity must drop off with the (d-1)th power of distance in a spacetime with d extended dimensions. In our universe, d = 3, so gravity drops off with distance2.

The extra dimensions predicted by string theory are 'compactified,' meaning that if you go a tiny distance in that 'direction,' you return to where you started, so you don't notice. Such dimensions can be shown to not make gravity have a different distance dependence.