Tag Archive for: Newtonian Gravity
![Newton-Cartan-Theory](https://www.physicsforums.com/insights/wp-content/uploads/2016/03/Newton-Cartan-Theory.png)
The Revival of Newton-Cartan Theory in General Relativity
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It's a calculation which you can find in any textbook on General Relativity (GR): when gravity is weak and does not vary with time, and when particles…
![spacetime](https://www.physicsforums.com/insights/wp-content/uploads/2015/09/spacetime.png)
Struggles With the Continuum: Is Spacetime Really a Continuum?
Is spacetime really a continuum? That is, can points of spacetime really be described---at least locally---by lists of four real numbers…