Monster group Updated 2025-07-16
Video 1.
Group theory, abstraction, and the 196,883-dimensional monster by 3Blue1Brown (2020)
Source. Too basic, starts motivating groups themselves, therefore does not give anything new or rare.
Quartz clock Updated 2025-07-16
Video 1.
How a quartz watch works by Steve Mould (2017)
Source. Mentions feedback loop loop with the quartz tuning fork for the piezoelectricity and an amplifier. Also mentions the choice of 32768 Hertz () as the first power of 2 that is outside of the human hearing range, and then how a frequency divider is used to reduce the frequency to get the second counter.
Isothermal means "at fixed temperature".
This is to contrast with the more well established polymerase chain reaction, which requires heating and cooling the sample several times.
The obvious advantage of isothermal methods is that their machinery can be simpler and cheaper, and the process can happen faster, since you don't have to do through heating and cooling cycles.
LSF get version Updated 2025-07-16
Most/all commands have the -V option which prints the version, e.g.:
bsub -V
Animal-in-the-loop Updated 2025-07-16
Ciro Santilli invented this term, it refers to mechanisms in which you put an animal in a virtual world that the animal can control, and where you can measure the animal's outputs.
IBM 650 Updated 2025-07-16
This was the first major commercial computer hit. Stlil vacuum tube-based.
Video 1.
Learning how to program on the IBM 650 Donald Knuth interview by Web of Stories (2006)
Source. It was decimal!
III-V semiconductor Updated 2025-07-16
Most notable example: gallium arsenide, see also: gallium arsenide vs silicon.
An important class of semiconductors, e.g. there is a dedicated III-V lab at: École Polytechnique: www.3-5lab.fr/contactus.php
Riemann hypothesis Updated 2025-07-16
visualizing the Riemann hypothesis and analytic continuation by 3Blue1Brown (2016) is a good quick visual non-mathematical introduction is to it.
Video 1.
What is the Riemann hypothesis REALLY about? by HexagonVideos (2022)
Source.
Spock Updated 2025-07-16
Janko group Updated 2025-07-16
Pauli exclusion principle Updated 2025-07-16
Initially a phenomenological guess to explain the periodic table. Later it was apparently proven properly with the spin-statistics theorem, physics.stackexchange.com/questions/360140/theoretical-proof-of-paulis-exclusion-principle.
And it was understood more and more that basically this is what prevents solids from collapsing into a single nucleus, not electrical repulsion: electron degeneracy pressure!
Bibliography:
Video 1.
The Biggest Ideas in the Universe | 17. Matter by Sean Carroll (2020)
Source.

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