On the Proper Understanding of the “Twin Paradox”

In this paper, we will show that with proper understanding of the concept of the invariance of the “intervals” of events in Minkowski’s spacetime, the problem of why (not the usual how) the “clock paradox” phenomenon happens can be easily understood without any confusion.

Keywords: Twin paradox, clock paradox, special relativity, invariance of intervals

*Corresponding author: Email: sitthichai@mut.ac.th