Quote:
Originally Posted by Robh
I would have thought that to an observer travelling on the box there is no actual change in the box's volume. It only appears shorter to an observer watching the box moving at high velocity.
Regards, Rob
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Exactly.
Just like time passing slower, it can't be noticed by that observer.
When he is back, however, the comparison between watches will show time did go slower.
But pressure of air in the box (cabin)? How to account for this effect when he is back?