Special Relativity - History, Special Relativity, Space-time, Unusual Effects Of Motion, Speed Of Light Limit

German–American physicist Albert Einstein's (1879–1955) theory of relativity consists of two major portions: the special theory of relativity and the general theory of relativity. Special relativity deals with phenomena that become noticeable when traveling near the speed of light and reference frames that are moving at a constant velocity, inertial reference frames. General relativity deals with reference frames that are accelerating, noninertial reference frames, and with phenomena that occur in strong gravitational fields. General relativity also uses the curvature of space to explain gravity.