Heuristic Derivation of Path Integrals from Classical Field Theory (including Schwinger Principle)
20:38
How convolutions in the path integral lead to the Schrodinger equation
24:30
The Principle of Least Action: Derivation of Newton's Second Law
22:44
Field Theory Fundamentals in 20 Minutes!
19:52
Functional derivatives and generalization of Euler Lagrange equations in QFT
7:01
I attended Trump’s inauguration yesterday. Here are my thoughts.
22:37
Action principle: geometric and physical interpretation
16:34
Deriving the Dirac Equation
12:21