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Mar7-12, 05:46 AM
PF Gold
P: 4,792
Quote Quote by ENDLESSYOU View Post
No.It's about two frames ,not two particles in two frames.So even in the sense of Galileo,the question still exits.
Would a good answer for you be that when you take any event in any frame and transform it to any other frame moving at u with respect to the first frame and then you transform again from that second frame with -u, you get the same event you started with in the first frame?