English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

As is well known, some aspects of General Relativity and Cosmology can bereproduced without even using Einstein's equation. As an illustration, the 0 -0 component of the Schwarzschild space can be obtained by the requirement thatthe geodesic of slowly mov- ing particles match the Newtonian equation. Giventhis result, we shall show here that the remaining component (grr) can beobtained by requiring that the inside of a Newtonian ball of dust matched at afree falling radius with the external space of unspecified type. This matchingdetermines the external space to be of Schwarzschild type. By this, it is alsopossi- ble to determine that the constant of integration that appears in theNewtonian Cosmology, coincides with the spatial curvature of the FLRW metric.All we assumed was some classical boundary conditions and basic assumptions.

Finding Schwarzschild metric component grr and FLRW's k without solving  the Einstein's equation, rather by a synergistic matching between geometric  results enfranchised by Newtonian gravity