What are some must-experience classes at IIT Madras? What are some classes that are mesmerizing in terms of the teacher's? knowledge or the way it was taught?

One of my friends is an alumnus of IIT Madras and according to him, Professor V. Balakrishnan’s classes are must-experience classes at IIT Madras. However, he is not sure whether Prof. Balakrishnan teaches whole courses these days.

My friend was very fond of Prof. Balakrishnan and according to him, if you hear from any of your friends in the Engineering Physics/ Physics Grad stream that Prof. V. Balakrishnan is giving a guest lecture, make sure you attend it. You will learn something new and will be inspired.

The introductory part of the Indian edition of the Feynman Lectures was written by Prof. V. Balakrishnan if I am not wrong. You can read about him on Wikipedia. You will also find some of his finest lectures on YouTube.

His is classes on Quantum Mechanics and Dynamical Systems were my friend’s favorite.