Singapore GCE A-Level H3 Physics Practice Questions - Singapore GCE A-Level H3 Physics Examination (SEAB Syllabus 9814) Exam

The time interval measured by a single clock present at the same spatial position as both events. The average time elapsed across all inertial reference frames observing the two events. The time interval measured by an observer moving at the speed of light relative to the events. The longest possible time interval measured between two events across any reference frame.