David Tong's 2009 Quantum Field Theory lectures at the Perimeter Institute Updated +Created
14 1 hours 20 minute lectures.
The video resolution is extremely low, with images glued as he moves away from what he wrote :-) The beauty of the early Internet.
Fermat's last theorem Updated +Created
A generalization of the Pythagorean triple infinity question.
Ladder operator Updated +Created
The operators are a natural guess on the lines of "if p and x were integers".
And then we can prove the ladder properties easily.
The commutator appear in the middle of this analysis.
Omniscient debugging Updated +Created
What it adds on top of reverse debugging: not only can you go back in time, but you can do it instantaneously.
Or in other words, you can access variables from any point in execution.
TODO implementation? Apparently Pernosco is an attempt at it, though proprietary.
Project Gutenberg remove line breaks Updated +Created
Their txt formats are so crap!
E.g. for;
wget -O pap.txt https://www.gutenberg.org/ebooks/1342.txt.utf-8
a good one is:
perl -0777 -pe 's/(?<!\r\n)\r\n(?!\r\n)( +)?/ /g' pap.txt
The ( +)? is for the endlessly many quoted letters they have, which use four leading spaces per line as a quote marker.
Proton-to-electron mass ratio Updated +Created
Proton VPN Updated +Created
Python classes Updated +Created
This book has formulas on it, which is quite cool!! And the formulas are basically not understandable unless you know the subject pretty well already in advance. It is however possible to skip over them and get back to the little personal stories.
Richard Feynman Quantum Electrodynamics Lecture at University of Auckland (1979) Updated +Created
Talk title shown on intro: "Today's Answers to Newton's Queries about Light".
6 hour lecture, where he tries to explain it to an audience that does not know any modern physics. This is a noble effort.
Part of The Douglas Robb Memorial Lectures lecture series.
Feynman apparently also made a book adaptation: QED: The Strange Theory of Light and Matter. That book is basically word by word the same as the presentation, including the diagrams.
According to www.feynman.com/science/qed-lectures-in-new-zealand/ the official upload is at www.vega.org.uk/video/subseries/8 and Vega does show up as a watermark on the video (though it is too pixilated to guess without knowing it), a project that has been discontinued and has has a non-permissive license. Newbs.
4 parts:
This talk has the merit of being very experiment oriented on part 2, big kudos: how to teach and learn physics
Video 1.
Richard Feynman Quantum Electrodynamics Lecture at University of Auckland (1979) uploaded by Trev M (2015)
Source. Single upload version. Let's use this one for the timestamps I guess.
AGI architecture Updated +Created
Conda Updated +Created
Conda is like pip, except that it also manages shared library dependencies, including providing prebuilts.
This has made Conda very popular in the deep learning community around 2020, where using Python frontends like PyTorch to configure faster precompiled backends was extremely common.
It also means that it is a full package manager and extremely overbloated and blows up all the time. People should just use Docker instead for that kind of stuff: www.reddit.com/r/learnmachinelearning/comments/kd88p8/comment/keco07k/
Electron magnetic moment Updated +Created
Euclid's formula Updated +Created
pyenv Updated +Created
Python abc Updated +Created
Python ast Updated +Created

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