Re: Proper local time

Le 16/04/2024 à 15:05, hitlong@yahoo.com (gharnagel) a écrit :

Maciej Wozniak wrote:

proper time (from the Latin, meaning "own time"): "The time as measured
by any observer from a clock at their location that is stationary with
respect to them."

Yes, that’s how we should see things.
The proper time (noted real time "Tr" by Doctor Hachel) is the time, that is to say the duration, measured by an observer placed in the same kinetic frame of reference (stationary observer).
It is sometimes also called local time.
For example, the half-life of this immobile particle in the laboratory reference frame is 25 nanoseconds.
Physicists understood very well that this value was relative, and that, placed in a different reference frame (evolving at very high speed)
another observer would not measure time in the same way.
But I prefer to keep quiet about that for the moment, because the things I would have to explain, unfortunately as always in the history of humanity, would not be immediately understood.
R.H.