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  • Writer's pictureMartin Scarratt

Seeing the Universe (Relativity Ch3- Spacetime Diagrams)

In chapters 1 and 2 we looked at Time dilation, Length Contraction, simultaneity issues and the two popular paradoxes: The Twin Paradox and the Pole-Barn Paradox. We mostly used algebraic arguments to explain what is happening and why, but there is another way of thinking about relativity. You can draw graphs of it! These graphs are called Spacetime Diagrams and as is often the way with graph drawing, this can reveal a lot that was not immediately apparent from the algebra. Of course, with Relativity nothing is simple or as you'd expect, even the graphs! In this chapter then, I will explain the theory of the previous chapters from a different perspective. This will bring some interesting insights into the theories, which I will explore in more detail.

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