Zeger Hendrikse

TDD, physics, and mathematics

---

Project maintained by zhendrikse Hosted on GitHub Pages — Theme by mattgraham

🔭 I’m looking for a job (freelance)!

📝 My resume can be downloaded here

👯 I’m currently working on my ✨science & mathematics website✨

🌱 I’m relearning the stuff I did as a student theoretical physics

🤔 I’m looking for help creating more scientific 3D visualizations

💬 Ask me about anything!

📫 How to reach me: zegerh_＠_yahoo_•_co_•_uk

⚡ Fun fact: I love playing the piano 🎹

My portfolio

Test-driven development

I love teaching people more about TDD. Strongly recommended: take a look at my TDD pages section that belongs to my TDD repository, which in turn is packed with dozens of coding kata's.

My coding dojos

   

A typical setting of an online coding dojo.

A typical setting of a coding dojo.

Interactive 3D simulations & visualizations

I maintain a site containing countless interactive simulations in physics and mathematics. Some examples are reproduced below.

3D visualization of some molecules

🔧 This black hole ray tracer Written in pure Javascript and three.js.
👉 Code developed in collaboration with MrBlankCoding in this GitHub repo.
👉 Molecular data taken from this code.
🔑 Hovering your mouse over each of the atoms displays additional information!

Baking soda Lactate Ethanol Methane Water Ammonia

Rotate     Atomic radius scaling

Solar system

🔧 Written in JavaScript and Three.js
👉 Inspired on solar-system by Luke Kulik & solarsystem by Dana Wensberg

Spiral galaxy simulation

🔧 Written in JavaScript and Three.js, extended with coloring and fading
👉 Based on an original idea and article by Lee Vaughan.

Black hole ray tracer

🔧 This black hole ray tracer is a port to JavaScript executed by a web worker.
👉 Refactored and extended with realistic colour coding!
👉 Based on the blackhole_raytracer project by Arman T, Casper Y, Lulu W.
👉 See their accompanying GitHub pages and video, where they explain the code.

Falling raindrops

🔧 Ported to JavaScript and Three.js by Zeger Hendrikse, see raindrop_waves.html
👉 Based on this example from Recreational Mathematics with Python

Raindrops frequency:

Raindrops intensity:

3D shapes

🔧 This 3D shapes renderer is 100% JavaScript using Three.js.