Accuracy of Relativity

1. Dec 25, 2005

Does anyone know what is the most accurate reading of SR's time dilation or space contraction? I.e. has anyone been able to verify the accuracy of SR to 10^-15?

2. Dec 26, 2005

HallsofIvy

Staff Emeritus
Not to 10-15, no, (where did you get that figure- just make it up?) but NASA has measured time dilation in space probes agreeing with SR to a relative accuracy of 10-5 which is pretty darn good!

3. Dec 26, 2005

Yea I was just made 10^-15 up as an example. What about GR? have they found it to an accuracy of better then 10^-5?

*Edit*
I guess my real question is: How many significant digits have GR and SR been found? i.e. 123.4567 would be 7 significant digits even though it is found to 10^-4.

Last edited: Dec 26, 2005