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Main Question or Discussion Point
Lets have a train moving to the right side in the shown direction of the arrow.
From a point near the end A, 2 rays of light are emitted toward both ends A and B so as they appear to reach both ends at the same time for an external observer.
At the moment the 2 rays reaches the 2 ends at the same time relative to the external observer, the train stops moving.
For the train observer, both rays reach both ends at different times. More precisely, the light ray reaches A before B.
The question, will the 2 observers record 2 different times of the train stopping? This is given that they both know that their train is moving.
Alternatively, if they interpret that the platform is moving in the opposite direction to the indicated arrow in the figure, will they record 2 different times of platform stopping?
From a point near the end A, 2 rays of light are emitted toward both ends A and B so as they appear to reach both ends at the same time for an external observer.
At the moment the 2 rays reaches the 2 ends at the same time relative to the external observer, the train stops moving.
For the train observer, both rays reach both ends at different times. More precisely, the light ray reaches A before B.
The question, will the 2 observers record 2 different times of the train stopping? This is given that they both know that their train is moving.
Alternatively, if they interpret that the platform is moving in the opposite direction to the indicated arrow in the figure, will they record 2 different times of platform stopping?
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