A classic "Bret Victor'esqe" style breakdown of basic math behind the modeling of light (i.e. 3D rendering). I know Bret Victor has since said these kind of limited interactive articles miss the point of his philosophical message, but I still think there is a lot of value in them. Especially the well polished examples like this. https://ciechanow.ski/lights-and-shadows/

Love how color is used to imply the relationship between the visual variable + the slider without needing a text label 🙂 https://betterexplained.com/articles/colorized-math-equations/

This is a really fun article.