Authors: Per Hokstad
We present a graph to illustrate a chain of events within the theory of special relativity. This spacetime diagram provides both the so-called proper time and calendar time, in addition to one space parameter. All parameters of the graph are given in time units, and we also relate the graph to a time vector in two dimensions. The graph depicts objects (events) having a piecewise constant velocity. By change in the velocity, it is required to ‘restart’ the process by providing new initial conditions. The approach is exemplified e.g. by versions of the ‘twin paradox’.
Comments: 9 pages. A new version appears in J Mod App Phy, Vol 6 No 3 Sept 2023
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