Einstein's theory of relativity is based in part on which one of the following postulates?
A) Speed of light in a vacuum is same for all observers regardless of source velocity.
B) Energy is conserved only in elastic collisions.
C) Space and time are absolutes.
D) Mass and energy are equivalent.

Question

Quizplus · Accepted Answer

Einstein's theory of relativity includes the postulate that the speed of light in a vacuum is constant and the same for all observers, regardless of the motion of the light source or observer.

Einstein's Theory of Relativity Is Based in Part on Which