Friedmann equations
id:
friedmann-equations-174-15570347
title:
Friedmann equations
text:
The Friedmann equations, also known as the Friedmann–Lemaître (FL) equations, are a set of equations in physical cosmology that govern the expansion of space in homogeneous and isotropic models of the universe within the context of general relativity. They were first derived by Alexander Friedmann in 1922 from Einstein's field equations of gravitation for the Friedmann–Lemaître–Robertson–Walker metric and a perfect fluid with a given mass density ρ and pressure p. The equations for negative spat
brand slug:
wiki
category slug:
encyclopedia
description:
Equations in physical cosmology
original url:
https://en.wikipedia.org/wiki/Friedmann_equations
date created:
2004-11-09T06:27:46Z
date modified:
2024-09-03T00:35:27Z
main entity:
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image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/e/ed/WMAP_2012.png","width":4096,"height":2048}
fields total:
13
integrity:
16