Andrew Dotson | Tensor Calculus For Physics Majors 007 | Metric Tensor pt. 2 @AndrewDotsonvideos | Uploaded 5 years ago | Updated 1 hour ago
Today I talk a little special relativity. Expressing the spactime interval in terms of the metric tensor, four-vectors, and I start getting into the distinction between lower and upper indices for vectors.

Link to Tensor Calculus for Physics Book:
amazon.com/gp/product/1421415658/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1421415658&linkCode=as2&tag=andrewdotson-20&linkId=b45243268a957a6cfdfc854a8f677a58