Video 1.
Why Relativity Breaks the Schrodinger Equation by Richard Behiel (2023)
Source. Take a plane wave function, because we know its momentum perfectly. Apply a constant voltage to an electron. You can easily bring it beyond the speed of light at about 255.5 keV.
Transpose of a matrix multiplication Updated 2025-07-16
When it distributes it inverts the order of the matrix multiplication:
Bisexuality Updated 2025-07-16
International System of Units Updated 2025-07-16
The key is to define only the minimum number of measures: if you define more definitions become over constrained and could be inconsistent.
Learning the modern SI is also a great way to learn some interesting Physics.
Quaternary Updated 2025-07-16
Binary tree Updated 2025-07-16
Enzyme Updated 2025-07-16
For an initial concrete example, consider e. Coli K-12 MG1655 gene thrA.
Video 1.
How Enzymes Work by RCSBProteinDataBank (2017)
Source. Shows in detail how aconitase catalyses the citrate to isocitrate reaction in the citric acid cycle.
Invertible matrix Updated 2025-07-16
The set of all invertible matrices forms a group: the general linear group with matrix multiplication. Non-invertible matrices don't form a group due to the lack of inverse.
Type system Updated 2025-07-16
Vim Updated 2025-07-16
Before we get a decent open source integrated development environment, what else can you do?
But also perfect for small one-off files when you don't have the patience to setup said IDE.
vim's defaults are atrocious for the 21st century! Vundle is reasonable as an ad-hoc package manager, but it can't set fixed versions of packages:
Ripples by ripples Updated 2025-07-16
A Baidu Baike page: baike.baidu.hk/item/層層水瀾/12386243 mentions that the score was published in 1970 by Tao Yimo (陶一陌) in a eponymous score book.
Video 1.
Ripples by ripples performed by Wu Li on the guzheng
. Source. Peformer's Chinese name: 吳莉.
River Cam Updated 2025-07-16

Unlisted articles are being shown, click here to show only listed articles.