General Relativity?s Ambiguous Clocks
Year: 1998
For dynamic systems devoid of forces, Einstein?s General Theory of Relativity reduces to his Restricted or Special Theory of Relativity. For less idealistic systems tolerating weak forces and mild rotation rates, the general theory reduces to a version closely akin to, but less restricted than, his Special Theory of Relativity. The analysis reveals that in this more realistic universe, time cannot be closed around spatial circuits.