**Friedmann equations** — Physical cosmology Universe · Big Bang … Wikipedia

**Universe** — For other uses, see Universe (disambiguation). Physical cosmology … Wikipedia

**Friedmann model** — /freed meuhn/, Astron. any model of the universe deduced from a homogeneous, isotropic solution of Einstein s field equations without a cosmological constant. Such models form the mathematical basis for many modern cosmologies and provide for… … Universalium

**Friedmann model** — /freed meuhn/, Astron. any model of the universe deduced from a homogeneous, isotropic solution of Einstein s field equations without a cosmological constant. Such models form the mathematical basis for many modern cosmologies and provide for… … Useful english dictionary

**Friedmann–Lemaître–Robertson–Walker metric** — FRW redirects here. For other uses, see FRW (disambiguation). Physical cosmology … Wikipedia

**Friedmann-Lemaître-Robertson-Walker metric** — The Friedmann Lemaître Robertson Walker (FLRW) metric is an exact solution of Einstein s field equations of general relativity; it describes a simply connected, homogeneous, isotropic expanding or contracting universe. Depending on geographical… … Wikipedia

**Friedmann, Aleksandr Aleksandrovich** — ▪ Russian mathematician and scientist Friedmann also spelled Fridman born June 17 [June 29, New Style], 1888, St. Petersburg, Russia died Sept. 16, 1925, Leningrad [St. Petersburg] Russian mathematician and physical scientist.… … Universalium

**Friedmann , Aleksandr Alexandrovich** — (1888–1925) Russian astronomer Born the son of a composer in St. Petersburg, Russia, Friedmann was educated at the university there. He began his scientific career in 1913 at the Pavlovsk Observatory in St. Petersburg and, after war service, was… … Scientists

**expanding universe** — Astron. a representation of the universe, based on the observed redshifts of distant galaxies, in which the galaxies are assumed to be receding from each other at a speed proportional to their separation as a result of the expansion of the… … Universalium

**Shape of the Universe** — Edge of the Universe redirects here. For the Bee Gees song, see Edge of the Universe (song). The local geometry of the universe is determined by whether Omega is less than, equal to or greater than 1. From top to bottom: a spherical universe, a… … Wikipedia