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http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/Special_relativity_rel_sim/index.html

Talking about the situation of clocks shown on this page. Clocks A&B. Now suppose clock B is moving towards A with constant velocity. A sees B coming towards it, and figures out that the clock B is running slow, and by symmetry B says the same. Now, B & A meet at a space-time and actually compare readings. Now they will know one of the clocks ran slower. How is this possible

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  • $\begingroup$ The resolution is the same as that of the famous Twin Paradox. Searching this term will probably get you want you want. $\endgroup$ – BMS Jan 14 '14 at 19:08
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    $\begingroup$ @BMS No one changed frames here. $\endgroup$ – user37026 Jan 14 '14 at 19:08
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    $\begingroup$ Where did you get "Now they will know one of the clocks ran slower"? $\endgroup$ – WillO Jan 14 '14 at 21:32
  • $\begingroup$ @WillO When they meet they can compare their clocks. $\endgroup$ – user37026 Jan 16 '14 at 8:50
  • $\begingroup$ L-L: And how will that tell them which clock ran slower? $\endgroup$ – WillO Jan 17 '14 at 16:16

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