The debate between Shledon and Wolowitz was intense in the 2nd episode but, it imparted a lot of new knowledge to me. I was unfamiliar with quantum mechanics and the episode invoked me to watch a documentary on Quantum mechanics and learn about the Many World Interpretation, which Sheldon accepts as the correct interpretation of quantum mechanics.
Another new thing which I learned, was the Brachistochrone problem, the fastest path between two points.
Interestingly I found the following post which dug deep into episode 2 to answer the questions Sheldon and Wolowitz were debating on.
What physics can we learn from Sheldon and Wolowitz’s debate in The Big Bang Theory (Season 8, Episode 2)
What did you learn new from episode 2? Do reply in the thread.