Anti-de Sitter space bell. It might be described as being the "opposite" of the surface of a sphere, which has a positive curvature. General relativity is a theory of the nature of time, space and gravity in which gravity is a curvature of space and time that results from the presence of matter or energy. Energy and mass are equivalent (as expressed in the equation "E" = "mc"), and space and time can be translated into equivalent units based on the speed of light ("c" in the "E" = "mc" equation). A common analogy involves the way that a dip in a flat
E=MC² (Mariah Carey album) Building was lit up in Carey's motif colors—lavender, pink, and white — in celebration of her achievements in the world of music. On the Canadian Albums Chart, during the week dated May 3, 2008, "E=MC²" debuted at number one, with first-week sales of 19,000 copies. It became her first number one album in Canada since before 1999, as "Rainbow" and "The Emancipation of Mimi" both opened at number two. The album spent seven weeks within the album's chart, and was eventually certified Platinum by the Canadian Recording Industry Association (CRIA), denoting shipments of 100,000 units. "E=MC²" entered the Australian Albums