Wikipedia:POTD row/October 16, 2006
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This animation shows the changing views of spacetime along the world line (the dashed line) of a rapidly accelerating observer under the special theory of relativity, proposed by Albert Einstein in 1905. The vertical direction indicates time and the horizontal direction indicates distance, and the dots on the world line are spaced at regular proper time intervals. The diagonal lines show the particle's light cone at that time. The other dots are random events. Animation credit: Cyp |