Special relativity

Einstein's 1905 paper "On the Electrodynamics of Moving Bodies" laid the foundation for special relativity, a revolutionary theory that changed our understanding of space and time.

The theory is based on two postulates: the principle of relativity, which states that the laws of physics are identical in all inertial frames of reference, and the principle of light constancy, which asserts that the speed of light in a vacuum is constant for all observers, regardless of their motion.

Time dilation is a direct consequence of these postulates. It describes how time can slow down or speed up depending on the relative motion between observers. This phenomenon has been confirmed through numerous experiments and has significant implications for modern physics and technology.