Quote:
Originally posted by ubertuber
If it is the particle that is moving, my watch will register more elapsed time. If it is me that is moving, my wristwatch should register less elapsed time.
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Uber, you answered your own question. If you are watching the particle it's time interval is slower than yours, seconds tick by slower on it's clock. If the particle is watching you, it thinks it is standing still and it thinks you are moving past it at very high velocity and your watch is running slowly. It's all about who is observing whom.
Hope this helps.