Re: [SR] Their proper times will necessarily be equal

Le 20/04/2024 à 18:52, Tom Roberts a écrit :

On 4/13/24 1:36 AM, Richard Hachel wrote:

"If two different observers travel an identical path in equal observable times, then their proper times will necessarily be equal.

 Yes, of course.
 My response differs from others because I interpret your context
differently.

You interpret path as a path in space-time while Hachel is considering
path in space only (so it is true in only ONE reference frame)
For instance, he claims that if two travelers would go from Earth
to Tau Ceti, one at constant velocity w.r.t Earth the other one
with a constant acceleration both will measure the same (proper)
time for their trips.