MakeCode Miro Bit Updated 2025-07-16
Microbit simulator using some Microsoft framework.
TODO the Python code from there does not seem to run on the microbit via uflash, because it is not MicroPython.
forum.makecode.com/t/help-understanding-local-build-options/6130 asks how to compile locally and suggests it is possible. Seems to require Yotta, so presumably compiles?
Presumably this is because Microsoft ported their MakeCode thing to the MicroBit, and the Micro Bit foundation accepted them.
E.g. there toggling a LED:
led.toggle(0, 0)
but the code that works locally is a completely differently named API set_pixel:
microbit.display.set_pixel(0, 0, )
Microsoft going all in on adopt extend extinguish from an early age!
Pion Updated 2025-07-16
Conceptually the simplest mesons. All of them have neutral color charge:
  • charged: down + anti-up or up + anti-down, therefore with net electrical charge electron charge
  • neutral: down + anti-down or up + anti-up, therefore with net electrical charge 0
Kaon Updated 2025-07-16
One strange quark bound with one up quark or a down quark. 6 combinations exist, 4 if we consider antiparticles the same as particles.
de Broglie relations Updated 2025-07-16
Relates particle momentum and its wavelength, or equivalently, energy and frequency.
The wavelength relation is:
but since:
the wavelength relation implies:
Particle wavelength can be for example measured very directly on a double-slit experiment.
So if we take for example electrons of different speeds, we should be able to see the diffraction pattern change accordingly.
MIT OpenCourseWare Updated 2025-07-16
CC BY-NC-SA unfortunately.
Upload is actually optional, and it appears that teachers do retain their copyright: ocw.mit.edu/ans7870/global/MIT_OpenCourseWare_FAQs.pdf Hmmm, so how have they convinced so many teachers to do it?
MIT Radiation Laboratory Updated 2025-07-16
Made huge advances in radar.
Notably, Isidor Isaac Rabi was a leading figure there, and later he was head at the Columbia University laboratory that carried out the crucial Lamb-Retherford experiment and the anomalous magnetic dipole moment of the electron published at The Magnetic Moment of the Electron by Kusch and Foley (1948) using related techniques.
Chicago Pile-1 Updated 2025-07-16
Video 1.
Getting funding for the Chicago Pile Edward Teller interview by Web of Stories (1996)
Source.
Video 2.
German graphite from The Genius Behind the Bomb (1992)
Source. Graphite was expensive because it had to be boron-free, since boron absorbs neutrons. But a boron process was the main way to make graphite. This type of pure graphite is known as nuclear graphite.
Trinity (nuclear test) Updated 2025-07-16
Plutonium-based.
Its plutonium was produced at Hanford site.
Video 1.
Trinity Test Preparations by AtomicHeritage (2016)
Source. Appears to be a compilation of several videos, presumably each with their own separate LA-UR, though these are not noted. Credited: "Video courtesy of the Los Alamos National Laboratory Archives", TODO how to search that archive online?
Video 2.
Trinity: Getting The Job Done
. Source. Good video, clarifies several interesting technical points:
Android (operating system) Updated 2025-07-16
However, many, many, many terrible horrors come with it:
Arch Linux Updated 2025-07-16
Respect. Big respect. Those people are hardcore from scratch hackers, and their wiki is amazing: wiki.archlinux.org/
It's just that Buildroot is more hardcore ;-)
But can you build the ISO full from source: Linux distribution buildable from source
NixOS Updated 2025-07-16
This thing is sexy.
Ubuntu Updated 2025-07-16
Ciro Santilli's Linux distro of choice as of 2019.
It ain't perfect, but it's decent enough.
The greatest advantage of it being that it has the likely largest desktop user base, and therefore the highest likelihood that your problems are solved on Ask Ubuntu, and goes together with Ciro's philosophy that "people should do everything in the same way to factor stuff out", especially the open source losers.
Ciro considers that the killer flaw of Ubuntu, and most desktop distros of 2020, is that no one under the Sun knows how to build them fully from source: Linux distribution buildable from source. This is why Ciro based the Linux Kernel Module Cheat on Buildroot, see also: Linux distribution buildable from source.

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