RELATIVITIY
Theory of relativity From Wikipedia, the free encyclopedia This article is about the scientific concept. For philosophical or ontological theories about relativity, see Relativism . For the silent film, see The Einstein Theory of Relativity . Two-dimensional projection of a three-dimensional analogy of spacetime curvature described in general relativity The theory of relativity usually encompasses two interrelated theories by Albert Einstein : special relativity and general relativity . [1] Special relativity applies to elementary particles and their interactions, describing all their physical phenomena except gravity . General relativity explains the law of gravitation and its relation to other forces of nature. [2] It applies to the cosmological and astrophysical realm, including astronomy. [3] The theory transformed theoretical physics and astronomy during the 20th century, superseding a 200-year-old theory of mechanics created primarily by...