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 (Giorgio Moroder album) release, only vinyl sourced CD's exist, due to the original master being lost, or most likely, corrupted, a common problem with early, digital recordings. A few compilations and CD singles from the late 1980s and early 1990s contain 3 tracks from the album that are digitally sourced; What A Night, I Wanna Rock You and E=MC2, but Baby Blue, If You Weren't Afraid and In My Wildest Dreams remain unissued in the digital domain. The songs "E=MC²" and "I Wanna Rock You" were featured in the game "" on the radio station "Flashback FM". Additional credits are listed vocally at