Why does time seem to flow in only one direction?
7863
What is time, does it flow, and if so what defines its direction?
131267
How can other processes affect measurements made with `time`?
47030
Entropy as an arrow of time
156058
Are time loops real?
48497
Doesn't entropy increase backwards in time, too?
4132
What is the closest general-relativistic equivalent of a "time slice"?
70852
How exactly does time slow down near a black hole?
20698
What's the difference between space and time?
20341
Why does current density have a direction and not current?
60084
In a very small static universe with only a particle, does it make sense to talk about time?
9735
Why does a change of direction imply an acceleration?
67661
Is there an observable of time?
100690
Does superluminal travel imply travelling back in time?
76340
If time-varying electric and magnetic fields originate each other, how come they are in phase?
50876
Is space expanding equally in every direction?
100530
Why does time in Minkowski's space have the opposite sign of the space coordinates?
141113
In Stargate why can you go only in one direction through the gate but radio signals can go both ways?