All articles in the Relativity 2 category

Intermediate – May include algebra and trigonometry, but no calculus or more advanced math.

Any FTL signal can be sent back in time

Posted October 27th, 2008 in Relativity 2. Tags: , , , .

One surprising consequence of Einstein’s special theory of relativity is that any signal traveling faster-than-light (FTL) can be used to send a message to the past. Special relativity divides the entire universe into three distinct regions as seen by any observer: (more…)


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