Zen Updated 2025-07-16
Astronomical measurement unit Updated 2025-07-16
François and Joseph Blanc Updated 2025-07-16
Very interesting story! A predecessor to microwave transmission for trading.
How The First Ever Telecoms Scam Worked by Tom Scott (2018)
Source. Amazing how they used control signals to hide the information from officials on either side. Quantum Fourier transform Updated 2025-07-16
Sample implementations:
Free license Updated 2025-07-16
Functional programming Updated 2025-07-16
Even if we cannot do everything in functional, we should at least strive to clearly extract functional substes in what we do.
Donald Knuth Updated 2025-07-16
game-icons.net Updated 2025-07-16
Ciro Santilli used it for the 2D version of his Ciro's 2D reinforcement learning games.
Nuclear magnetic resonance spectroscopy Updated 2025-07-16
Used to identify organic compounds.
Seems to be based on the effects that electrons around the nuclei (shielding electrons) have on the outcome of NMR.
So it is a bit unlike MRI where you are interested in the position of certain nuclei in space (of course, these being atoms, you can't see their positions in space).
What's Nuclear Magnetic Resonance by Bruker Corporation (2020)
Source. Good 3D animations showing the structure of the NMR machine. We understand that it is very bulky largely due to the cryogenic system. It then talks a bit about organic compound identification by talking about ethanol, i.e. this is NMR spectroscopy, but it is a bit too much to follow closely. Basically the electron configuration alters the nuclear response somehow, and allows identifying functional groups. Nu (letter) Updated 2025-07-16
Representation theory of the Lorentz group Updated 2025-07-16
Physics from Symmetry by Jakob Schwichtenberg (2015) page 66 shows one in terms of 4x4 complex matrices.
More importantly though, are the representations of the Lie algebra of the Lorentz group, which are generally also just also called "Representation of the Lorentz group" since you can reach the representation from the algebra via the exponential map.
Bibliography:
- Physics from Symmetry by Jakob Schwichtenberg (2015) chapter 3.7 "The Lorentz Group O (1, 3)"
clang Updated 2025-07-16
Coulomb gauge Updated 2025-07-16
Alternative to the Lorentz gauge, but less used in general as it is not as nice for relativity invariance.
Linus Torvalds Updated 2025-07-16
Lorentz boost Updated 2025-07-16
Lorentz invariant Updated 2025-07-16
Pornographic film Updated 2025-07-16
To talk about something without giving the real name to not scare off the audience Updated 2025-07-16
Ciro Santilli hates it when an expert does this!!!
If you estimate that the audience won't know the name of the concept, that's fine, do explain it as well.
But you must also give the name!!!
This also manifests itself when news outlets omit foreign names from headlines, notably Chinese, but likely happens to all non-european languages too.
Josephson constant Updated 2025-07-16
The inverse of the magnetic flux quantum.
LLVM Intermediate Representation Updated 2025-07-16
Very hot stuff! It's like ISA-portable assembly, but with types! In particular it also it deals with calling conventions for us (since it is ISA-portable). TODO: isn't that exactly what C does? :-) LLVM IR vs C
Documentation: llvm.org/docs/LangRef.html
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