10-1-postulates-of-special-relativity_summary

The postulates of Special Relativity are two fundamental principles developed by Albert Einstein that form the basis of the theory. These postulates are: 1. The laws of physics are the same in all inertial reference frames. 2. The speed of light is the same in all inertial reference frames and is not affected by the speed of its source. These postulates were developed in response to the Michelson-Morley experiment, which failed to detect the ether (an imaginary medium thought to fill space) and showed that the speed of light is constant regardless of the motion of the source or observer. The speed of light is a universal constant with a value of approximately 299,792,458 m/s. The theory of Special Relativity has important implications for our understanding of space and time, including the concept of relative motion and the idea that simultaneity is not absolute but depends on the observer's frame of reference.