This is what Feynman's PhD thesis looks like 👀

Unfortunately, the free PDF link to the thesis on the CERN website has recently stopped working. You may find alternate copies through your own library under the title 'The Principle of Least Action in Quantum Mechanics' or published in the book 'Feynman's Thesis' https://amzn.to/3shuHne

Old CERN link: https://cds.cern.ch/record/101498/fil...
Feynman's Nobel address: https://www.nobelprize.org/prizes/phy...
Notes on Classical Mechanics, Lagrangian and Principle of Least Action: https://www.damtp.cam.ac.uk/user/tong...
Quantum electrodynamics: https://en.wikipedia.org/wiki/Quantum...
Abraham–Lorentz force: https://en.wikipedia.org/wiki/Abraham...
Wheeler–Feynman absorber theory: https://en.wikipedia.org/wiki/Wheeler...
A small series of videos about the math in Feynman's thesis:    • Feynman's Thesis: video series #1, pt 1/3  

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✨Music: Lion's Drift - Trevor Kowalski

Timestamps:
0:00 - Intro
1:25 - Thesis table of contents
3:49 - Thesis introduction
8:39 - Least action in classical mechanics
11:16 - Least action in quantum mechanics
14:53 - Patron Cat of the Day