World Science Scholars
26.3 Spacetime Diagrams Essential Features
video
video


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Marius Smallegoor
At the end of yhe video you see a blue and a red axis at the left of the screen and the moving blue nowline of the moving frame at the right of the screen. In the video the time at x=0 (red line) and x'=0 (blue line) stay the same, This cannot be because t'= t/γ.
Ary Wahyudi
Each of those 0's in your statement [x=0 (red line) and x’=0 (blue line)] corresponds to the origin of each coordinate system - which of course always stay as they are, at constant speed. Your notion of t' is actually one that's illustrated by the moving "nowline".
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