- #1

- 6

- 0

_{3}and t

_{1}because comparing two space-time co-ordinates such as x

_{3}=1,2,3, t

_{1}=1 and x

_{3}=1,2,3,t

_{1}=10 says you are looking

*at the same point in space*9 seconds apart. This is thought to be naive. But in special relativity, time is relative. And because there is no absolute space, would the notion of relative/personal space exist? As in, a moving co-ordinate system has its own space despite its motion.