apparent singularity

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• Singularity Sky — Infobox Book | name = Singularity Sky title orig = translator = image caption = Cover of first edition (hardcover) author = Charles Stross cover artist = country = United Kingdom language = English series = subject = genre = Science fiction novel …   Wikipedia

• Apparent horizon — An apparent horizon is a surface defined in general relativity as the boundary between light rays which are directed outwards and moving outwards, and those which are directed outwards but moving inwards.Apparent horizons are not invariant… …   Wikipedia

• Mathematical singularity — In mathematics, a singularity is in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well behaved in some particular way, such as differentiability. See Singularity theory… …   Wikipedia

• Ring singularity — In general relativity the gravitational singularity at the center of a rotating black hole (a Kerr black hole ) is supposed to form a circle rather than a point. This is often referred to as a ring singularity.Description of a ring… …   Wikipedia

• Kerr metric — In general relativity, the Kerr metric (or Kerr vacuum) describes the geometry of spacetime around a rotating massive body. According to this metric, such rotating bodies should exhibit frame dragging, an unusual prediction of general relativity; …   Wikipedia

• Schwarzschild metric — In Einstein s theory of general relativity, the Schwarzschild solution (or the Schwarzschild vacuum) describes the gravitational field outside a spherical, non rotating mass such as a (non rotating) star, planet, or black hole. It is also a good… …   Wikipedia

• Lemaitre metric — is a spherically symmetric solution to vacuum Einstein equation apparently [L.D.Landau and E.M.Lifshitz Course of Theoretical Physics, vol. 2: The Classical Theory of Fields .] [Andre Gsponer, More on the early interpretation of the Schwarzschild …   Wikipedia

• Eddington-Finkelstein coordinates — In general relativity Eddington Finkelstein coordinates, named for Arthur Stanley Eddington and David Finkelstein, are a pair of coordinate systems for a Schwarzschild geometry which are adapted to radial null geodesics (i.e. the worldlines of… …   Wikipedia

• Coordinate conditions — In general relativity, the laws of physics can be expressed in a generally covariant form. In other words, the real world does not care about our coordinate systems. However, it is often useful to fix upon a particular coordinate system, in order …   Wikipedia

• Dirichlet eta function — For the modular form see Dedekind eta function. Dirichlet eta function η(s) in the complex plane. The color of a point s encodes the value of η(s). Strong colors denote values close to zero and hue encodes the value s argumen …   Wikipedia

• Big Bang — This article is about the cosmological model. For the sitcom, see The Big Bang Theory. For other uses, see Big Bang (disambiguation) …   Wikipedia