I found very good set of physics course videos in perimeter institute recorded seminar archive.
I am going through these 2 courses and they are very good and highly recommended.
1. Advanced General Relativity
This course introduces general relativity at advanced level as the name implies. Prof. Sorkin is very smart and good teacher despite his soft voice!
I enjoyed the explanation of Covariant derivative and Lie derivative in particular. It gave me an intuition in to why covariant derivative is inextricably linked to metric and very intuitive explanation of Lie brackets as the "inability of the parallelograms to close".
2. Quantum Theory
It introduces quantum theory again at an advanced level. Prof. Emerson again is very good teacher and has a good voice as a bonus.
I am only half way through the course so far. I enjoyed the foundation discussions in lecture 7 and more importantly the connection between classical and quantum mechanics in lecture 8. Latter gave an intuition about why jumping of state is not so different from classical probabilistic "state update rule" and surprisingly where they differ is after the measurement we DO NOT see the outcome.
1. In Quantum mechanics coherent superposition is destroyed and it definitely is in one of the eigen states [although we didn't take a look at the actual state!]
2. In classical mechanics "coherent superposition" remains in the sense same probability density function continues to apply.
This was very interesting observation and came us a surprise to me! This point alone was the worth effort I spent in learning these videos.
I am going through these 2 courses and they are very good and highly recommended.
1. Advanced General Relativity
This course introduces general relativity at advanced level as the name implies. Prof. Sorkin is very smart and good teacher despite his soft voice!
I enjoyed the explanation of Covariant derivative and Lie derivative in particular. It gave me an intuition in to why covariant derivative is inextricably linked to metric and very intuitive explanation of Lie brackets as the "inability of the parallelograms to close".
2. Quantum Theory
It introduces quantum theory again at an advanced level. Prof. Emerson again is very good teacher and has a good voice as a bonus.
I am only half way through the course so far. I enjoyed the foundation discussions in lecture 7 and more importantly the connection between classical and quantum mechanics in lecture 8. Latter gave an intuition about why jumping of state is not so different from classical probabilistic "state update rule" and surprisingly where they differ is after the measurement we DO NOT see the outcome.
1. In Quantum mechanics coherent superposition is destroyed and it definitely is in one of the eigen states [although we didn't take a look at the actual state!]
2. In classical mechanics "coherent superposition" remains in the sense same probability density function continues to apply.
This was very interesting observation and came us a surprise to me! This point alone was the worth effort I spent in learning these videos.
