Episode 136: Introduction to General Relativity
The Science of Everything Podcast
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The Metric Tensor in General Relativity
Christoffel symbols basically tell us how to adjust a normal derivative and make it a covariant derivative so that we can do calculus properly in curved space time. Christoffel symbols are denoted with a capital Lambda symbol which looks like a capital F except the lower horizontal line is missing. The metric tensor is crucial it's at the heart of general relativity and what we'll see later is that pretty much all of this stuff on the left hand side of Einstein's field equations can be expressed in terms of the metric tensor or its derivatives.
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