the project
About
Delta by Delta (Δ/Δ) is a one-person engineering education project run by a simulation engineer.
The idea is simple: take one engineering question at a time — the kind you actually meet in work or study — and explain it from first principles, step by step, without skipping the derivation.
This site hosts the downloadable side of the project: topic packs. Each pack covers one topic with three files that reinforce each other — a PDF guide that walks a beginner in from zero, an Excel sheet with the calculation laid out cell by cell, and a code template you can run and modify.
On YouTube, Δ/Δ publishes animated derivations of the math behind simulation: computational fluid dynamics, linear algebra, and machine learning. Intuition first, then the full math.
The videos are animated with Manim, and this site is generated by a small Python script with no frameworks.