Any FTL signal can be sent back in time
12 CommentsPosted October 27th, 2008 in Relativity 2. Tags: Diagrams, Intermediate-Science, No Equations, Physics.
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…)
