### General Relativity 101

Introduction

I have taught myself some general relativity, and I am aiming for a Ph. D. that involves general relativity. Can I explain it, even if slightly?

I think I can, at least, try to do so. So, here I will try to explain the concepts involved: Riemann TensorRicci ScalarRicci TensorChristoffel SymbolEnergy-Momentum Tensor.. As you can see, general relativity is scary. It really is - one of the standard texts for an introduction course is Spacetime and Geometry by Sean Carroll, and the first four chapters are mathematics.

Yet the information contained does have conceptual explanations. There's a familiar one, involving space as a sort of elastic cloth and planets and stars as really heavy balls that dent the fabric.

However, I also want to provide some concept for the mathematical objects involved. That's the beef of this a…

*The Credible Hulk*made a few posts on General Relativity, which is Einstein's theory of gravity. The comment thread to the right (image) ensued.I have taught myself some general relativity, and I am aiming for a Ph. D. that involves general relativity. Can I explain it, even if slightly?

I think I can, at least, try to do so. So, here I will try to explain the concepts involved: Riemann TensorRicci ScalarRicci TensorChristoffel SymbolEnergy-Momentum Tensor.. As you can see, general relativity is scary. It really is - one of the standard texts for an introduction course is Spacetime and Geometry by Sean Carroll, and the first four chapters are mathematics.

Yet the information contained does have conceptual explanations. There's a familiar one, involving space as a sort of elastic cloth and planets and stars as really heavy balls that dent the fabric.

However, I also want to provide some concept for the mathematical objects involved. That's the beef of this a…