spatial curvature उदाहरण वाक्य

Therefore, regardless of the shape of the universe the contribution of spatial curvature to the expansion of the Universe could not be much greater than the contribution of matter.
The Hubble parameter can change over time if other parts of the equation are time dependent ( in particular the mass density, the vacuum energy, or the spatial curvature ).
General relativity merely adds a connection between the spatial curvature of the universe and the energy of such a particle : positive total energy implies negative curvature and negative total energy implies positive curvature.
Third, the curvature index " k " determines the sign of the mean spatial curvature of spacetime averaged over sufficiently large length scales ( greater than about a billion light years ).
He was the earliest to employ Alexander Friedmann's and Georges Lema�tre's non-static solutions of Einstein's gravitational equations describing a universe of uniform matter density and constant spatial curvature.

If the spatial flatness is forced by something like inflation, then the large-scale spatial curvature might actually be 0.00000000000000 . . . 00000 . . . . 00000 with a large number of zeros.
It is unstable in the sense that any slight change in either the value of the cosmological constant, the matter density, or the spatial curvature will result in a universe that either expands and accelerates forever or re-collapses to a big crunch.
where H is the Hubble parameter, a is the scale factor, G is the gravitational constant, k is the normalised spatial curvature of the Universe and equal to " 1, 0, or + 1, and \ Lambda is the cosmological constant.
This means that the universe can be well approximated by a model where the spatial curvature parameter k is zero; however, this does not necessarily imply that the universe is infinite : it might merely be that the universe is much larger than the part we see . ( Similarly, the fact that Earth is approximately flat at the scale of the Netherlands does not imply that the Earth is flat : it only implies that it is much larger than the Netherlands .)