SPARQL Updated 2025-07-16
SQL function Updated 2025-07-16
Giant magnetoresistance Updated 2025-07-16
Video 1.
Introduction to Spintronics by Aurélien Manchon (2020) giant magnetoresistance section
. Source.
Describes how giant magnetoresistance was used in magnetoresistive disk heads in the 90's providing a huge improvement in disk storage density over the pre-existing inductive sensors
Principal quantum number Updated 2025-07-16
Determines energy. This comes out directly from the resolution of the Schrödinger equation solution for the hydrogen atom where we have to set some arbitrary values of energy by separation of variables just like we have to set some arbitrary numbers when solving partial differential equations with the Fourier series. We then just happen to see that only certain integer values are possible to satisfy the equations.
web.math.pmf.unizg.hr/~duje/tors/rankhist.html gives a list with Elkies (2006) on top with:
TODO why this non standard formulation?
qiskit.transpile() Updated 2025-07-16
This function does quantum compilation. Shown e.g. at qiskit/qft.py.
This is a bit "formal hocus pocus first, action later". But withing that category, it is just barely basic enough that 2021 Ciro can understand something.
Lecture notes transcribed by a student: github.com/avstjohn/qft
18 1h30 lectures.
React class vs function component Updated 2025-07-16
React function components do produce shorter code. But they are also impossible to understand without knowing what is their corresponding class component.
Hooks were introduced much after classes, and just require less code, so everyone is using them now instead of classes.
React JSX Updated 2025-07-16
Terse RDF Updated 2025-07-16
SARS-CoV-2 non-structural protein Updated 2025-07-16
These are also required for test tube replication.
Sergey Brin's children Updated 2025-07-16
There is basically no information about them online, only some uncited sources such as: abtc.ng/chloe-wojin-all-what-you-need-to-know-about-sergey-brins-daughter/

There are unlisted articles, also show them or only show them.