# Four 1975 Lectures by Paul Dirac

Slobodan Perovic (via Chris Joas) pointed this gem out to me. Four wonderful lectures given by Paul Dirac in 1975, on various topics in the foundations of quantum theory and cosmology.

**“Quantum Mechanics”**

**“Quantum Electrodynamics”**

**“Magnetic Monopoles”**

**“Large Number Hypothesis”**

###### Update

*21 June 2013:* Ed at Animated Physics has made a very helpful table of contents page for these videos, locating the times of each topic discussed in Dirac’s lecture.

- Stop commercializing academic publishing
- Beyond the CPT theorem

Hi, are you back to blogging ?

Flirting with the idea…. :)

Just saw your blog, these are great videos, I have taken the time to log the first tape to help find specific topics at:

http://www.animatedphysics.com/energylevels/dirac.htm

Fantastic work Ed! I’ve updated the post with your link.