Special relativity rests on two postulates: laws of physics are the same in all inertial frames, and the speed of light is constant for all observers.
Consequences: time dilation, length contraction, and E = mc².
Special relativity rests on two postulates: laws of physics are the same in all inertial frames, and the speed of light is constant for all observers.
Consequences: time dilation, length contraction, and E = mc².