The Postulates of Special Relativity 3:3  Lorentz Transformations 1:7 » 
The Postulates of Special RelativitySimultaneity 


One of the most important concepts in special relativity is the one of simultaneity. Two physical events that occur simultaneously in one inertial frame are only simultaneous in any other inertial frame if they occur at the same time and at the same place. Time is relative! The two figures to the left, seen from two different inertial frames, help clarify the concept of simultaneity: Top figure: Bottom figure:

Related Laureate 

The Nobel Prize in Physics 1921  Albert Einstein »  