- #1
Biker
- 416
- 52
I don't really understand how time dilation works in SR.
I just know this that "Now" in one reference frame is not the same in another so for example when Observer A says his time is 10s then at the same moment he will say Observer B's time who is moving relative to him is 5s for example.
The same applied to B if he says his time is 5 then A's time is 2.5 s.
But this just doesn't "Tick" in my head. Suppose we have A and B who synchronize there clocks when they pass each other. A sees himself stationary and puts a flag some distance away from him. He measures the time it takes for B to reach that and says it is for example 10s , He then says it has to be 5 secs on B's clock.
From B's perspective, Distance is shorter so he does take 5 secs to complete the journey (?) however he says that A's clock should measure 2.5 secs. Doesn't this contradicts itself? Say both of them have a very large telescope what would they see on each other's clock ?
I just know this that "Now" in one reference frame is not the same in another so for example when Observer A says his time is 10s then at the same moment he will say Observer B's time who is moving relative to him is 5s for example.
The same applied to B if he says his time is 5 then A's time is 2.5 s.
But this just doesn't "Tick" in my head. Suppose we have A and B who synchronize there clocks when they pass each other. A sees himself stationary and puts a flag some distance away from him. He measures the time it takes for B to reach that and says it is for example 10s , He then says it has to be 5 secs on B's clock.
From B's perspective, Distance is shorter so he does take 5 secs to complete the journey (?) however he says that A's clock should measure 2.5 secs. Doesn't this contradicts itself? Say both of them have a very large telescope what would they see on each other's clock ?