The time interval in moving frames can be negative

Abstract

With respect two each other in the moving frame two time interval between and minus the result will be another time interval in moving frame. Therefore In particular case will be, for which the time interval will be negative. Here, is the relativity time, is the rest time interval. This equation is Einstein’s time dilation equation And since, Where, is a time interval in moving frame. This time interval can be found in moving frame when the time interval is zero in the rest frame.