Richard Feynman was one of the most famous and respected theoretica...

Quantum Field Theory (QFT) is the natural extension of Quantum Mech...

Feynman's Nobel Lecture can be read [here](http://www.nobelprize.or...

Los Alamos was filled with remarkable physicists that deeply influe...

$\hbar$ has dimensions of Joules $\times$ Seconds, while the action...

$$ -\frac{i\hbar}{\psi}\frac{\partial \psi}{\partial x}= -\frac{i\...

The Euler-Lagrange equation imposes conditions on the Lagrangian $L...

$$ \frac{\partial L}{\partial x}= \frac{\partial (K(v)-U(x))}{\par...

Since the generalized coordinates are independent $$ \frac{\parti...

The idea here is that Quantum Mechanics (QM) contains Classical Mec...

Herbert Jehle was a german physicist that became known for his work...

Now if we use the same approach for quantum mechanics as we did for...

Huygens' principle can be seen as a consequence of the homogeneity ...

$e^x = \sum_{k=0}^{\infty} \frac{x^k}{k!}$ and so the first order e...

This derivation shows not only Feynman's mathematical ability and i...