Recent content by dhiraje2002

the man who sees the world in his 50s the same when he was in 20s has wasted his 30 years.

As far as i know, "time" is the extra dimension that we need to add in our usual 3-D geometry to explain gravity in relativity. As i think, the backward travel in time is prohibited by the sets of lorentz transformation (its improper transformation-that makes v>1, weinberg approach (c=1), since...