I'm a theoretical physicist (old-amateur/hobbyist division).
3 Is it mathematically possible or topologically allowable for cutouts, or cavities, to exist in a 3-manifold? jan 22 '13
2 Does the total mass of an isolated object include the mass stored in its gravitational field? sep 13 '13
2 Is spacetime moving in general relativity? mar 8 '13
1 How does gravity escape a black hole? feb 14 '13
-1 Does a black hole have an interior or does the spacetime manifold itself end at the event horizon? [closed] oct 22 '13