Hello everyone - I wanted to share a helpful video for anyone who is interested in general relativity. If you didn't already know about this, Leonard Susskind teaches a course on general relativity at Stanford, and the entire course is available for free on youtube. I have only had time to watch the first lecture (it is 2 hours) but so far I think he does a very good job. I especially like his explanation of covariant and contravariant vectors and tensors at the end. I have had one course in tensor calculus already, and I still mix up contravariant with covariant. If you're not there yet, then this is a good preview. I wish I knew about this video before taking that class. I will definitely finish watching the rest before I get into a class on GR.
Note: this is the link to the first lecture - from there you can get to the rest by clicking on the related videos.
http://www.youtube.com/watch?v=JRZgW1YjCKk
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