Finding the "proper time"
I'm currently working through the book "A first course in general relativity" by Bernard F. Schutz, and I am kind of stuck on one of the problem on page 56 question 19.
Problem
A body is said to be uniformly accelerated if its acceleration four vector \vec{a} has...
An interesting time dilation experiment I thought of was to send a radio signal with two pulses a certain time apart to a receiver moving toward the emitter.
I believe that the effect is that the accelerated reciever undergoes time dilation and would time the two pulses of light as closer...
If a passing spaceship sends a beam from the back to the front in their time of L/c andthen immediately the beam is reflected from front to back, can an stationary observer using proper time determine the length contraction formula?
I don't see how to set this up. Thanks for any help.
A commonly accepted modern SR/Gr statement is "timelike geodesics are maxima of the proper time".
I really shall not dispute with these experts, who are all professors.
But this statement is clearly questionable. It bothered me for a long time.
The H & T experiment and GPS all show the...