phy190_l12 - PHY190 Lecture #11 November 14, 2007 R6.5...

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Unformatted text preview: PHY190 Lecture #11 November 14, 2007 R6.5 Reading Two Observer Diagrams For event Q read off ( t Q ; x Q ) in the usual way. Read off t Q by projecting parallel to the x axis. Read off x Q by projecting parallel to the t axis. Ticks on t axis are further apart (follow the hyperbola back to the t axis to compare times). Ticks on x axis are further apart (follow the hyperbola back to the x axis to compare distances). R7 Length Contraction Have discussed at length how special relativity can alter two observers perceptions of time. From the Lorentz transformations we can see it will also alter our notion of length R7.1 Define Length An objects length, in a given inertial frame, is defined to be the distance between any two simultaneous events that occur at its ends. Just a common sense notion of length expressed in our relativistic language of events....
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phy190_l12 - PHY190 Lecture #11 November 14, 2007 R6.5...

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