- #1
Thevan
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- TL;DR Summary
- Spacetime Invariant - 2 Equations with signs changed.
The distance/difference between two points in spacetime can be written in two forms (as shown in attachment). Can anyone explain the difference in the two equations? I have read that the two equations are the same, but i don't understand the change in sign. Why is it written in two forms?
(Considering motion only along x-axis.)
(Considering motion only along x-axis.)