Oldman

I have three questions. Your response will greatly help me in my research on gravitation. (1) Do gravitayional masses of matter and antimatter have opposite signs? (2) What's the sign of matter-antimatter gravitational force? (3) Does General relativity alllow matter and antimatter to warp the field of space-time geometry oppositely?

The motion of a mass 'creates' angular monentum at a distance from an axis. This is very similar to the fact that the motion of a charge creates magnetic field (with N-S polarity) at a distance from an axis. Both can be brought to be similar with a slight adjustment in the related vector products without any loss of physics. In the following all symbols are vectors. Angular monentum (moment of monentum): Lm = r x p. Angular current (moment of current): Le = r x i. Here p is lienar momentum vector; i the current vector. I have completed a table of similarities, which I cannot discuss because of the Forum's rules. Isn't Nature so simple and simlar?