Conceptualizing the Christoffel Symbols: An Adventure in Curvilinear Coordinates
What are the Christoffel Symbols, and why do we need them? Our exploration into the world of differential geometry continues, as we strive to lay bare the complex mathematical machinery behind General Relativity. Here we calculate the Christoffel symbols for the most common of curvilinear coordinates system — polar coordinates — in order to build a preliminary intuition for what these symbols represent and how they relate to the metric tensor. As a bonus, we unearth the meaning of concepts like the Levi-Civita connection and parallel transport along the way. Plus: bears!
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Contents:
00:00 - Intro
00:54 - Cartesian vs. Polar Land
03:31 - The Metric Tensor
10:16 - The Levi-Civita Connection
14:15 - The Christoffel Symbols
21:14 - A Polar Geodesic
22:27 - Future Agenda
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