general relativity - Layman's explanation and understanding of …
General relativity is a theory which uses the mathematical framework known as (semi-)Riemannian geometry. In this branch of mathematics, one studies spaces which are in a …
general relativity - What was the Law of Gravity better explained …
It is Einstein's Theory of General Relativity that provides a more accurate description of what we normally call gravity. Basically, general relativity explains gravity not as an interaction between …
general relativity - Einstein Field Equations Derivation - Physics ...
Jan 16, 2023 · $\begingroup$ +1 This derivation uses Newtonian mechanics, which has to be taken for granted. One more derivation can be to look for the Lagrangian of a spin-2 field …
How does General Relativity explain escape velocities?
May 2, 2019 · In general relativity, objects follow the shortest possible path through curved space-time called a geodesic and that there exists no such force of gravity which pulls objects, it is …
general relativity - Equivalence principle(s) and geodesic …
Nov 24, 2023 · E.g., scalar-tensor theory in the Einstein frame. The resulting equation of motion is not the standard geodesic equation, therefore $\nabla_{v}v^{\mu} \neq 0$, and the theory …
general relativity - How do you actually use the geodesic equation ...
May 22, 2016 · The geodesic equation used in general relativity is the following: $$ {d^2 x^\mu \over ds^2} =- \Gamma^\mu {}_{\alpha \beta}{d x^\alpha \over ds}{d x^\beta \over ds}. $$ It …
general relativity - How does one derive the Einstein Field …
Apr 21, 2019 · A formal derivation of the field equations involves lot of advanced math (remember Einstein needed several year to get a grasp of it), but nevertheless, there is some analogy …
general relativity - Does time dilation cause gravity as explained in ...
There is much to dislike about the popularized video, but its basic idea isn’t far from the truth. If you work through the equations of weak-field GR, you will find that ${{g}_{00}}$, which …
general relativity - Jacobian and chain rule contradiction, Geodesic ...
Dec 11, 2024 · They do that because they want to find an explicit expression for the covariant derivative in the general coordinates, which turns out to just be the geoedesic equation. In the …
general relativity - Can the expansion of the Universe be explained …
Aug 22, 2021 · According to general relativity gravitational waves are transverse. This means they only act in directions perpendicular to their direction of propagation. The way gravitational …