Which best describes the proper time interval between two events?
A) the longest interval measured by any inertial observer
B) the interval measured in the inertial reference frame in which the two events occur a maximum distance from each other
C) the interval measured in an inertial reference frame in which the two events are simultaneous
D) the interval measured in an inertial reference frame in which the two events occur at the same place
E) None of these choices are correct

Question

Quizplus · Accepted Answer

The proper time interval between two events is defined as the time interval measured by an observer for whom the events occur at the same spatial location. This is typically the shortest time interval between the events, as measured in the observer's inertial reference frame.

Which Best Describes the Proper Time Interval Between Two Events