Zeger Hendrikse
TDD, physics, and mathematics
Project maintained by zhendrikse Hosted on GitHub Pages — Theme by mattgraham
π Iβm looking for a job (freelance)!
π My resume can be downloaded here
π― Iβm currently working on my β¨science & mathematics websiteβ¨
π± Iβm relearning the stuff I did as a student theoretical physics
π€ Iβm looking for help creating more scientific 3D visualizations
π¬ Ask me about anything!
π« How to reach me: zegerh_οΌ _yahoo_β’_co_β’_uk
β‘ Fun fact: I love playing the piano πΉ
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 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
- Code developed in collaboration with MrBlankCoding in this GitHub repo.
- Molecular data taken from this code.
- Written in pure Javascript and three.js.
- Hovering your mouse over each of the atoms displays additional information!
Spiral galaxy simulation
- Based on an original idea and article by Lee Vaughan.
- Written in Javascript and Three.js, extended with colouring and fading:
- Core / Bulge (Central Region): yellow-white to reddish color, since the core is populated mostly by older stars (Population II), which are cooler and more evolved.
- Mid-to-Outer Disk (Arms): bluish-white color, because the spiral arms host young, hot, and massive stars (Population I), which are blue and short-lived. Also, star-forming regions and nebulae contribute a diffuse glow.
- Outer Halo: dim red to transparent, as this region contains very old stars and globular clusters, often too dim to be noticeable.
Black hole ray tracer
- 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.
- This black hole ray tracer is a port to Javascript executed by a web worker.
- Refactored and extended with realistic colour coding!
Falling raindrops
- Based on this example from Recreational Mathematics with Python
- Ported to Javascript and three.js by Zeger Hendrikse, see raindrop_waves.html
Β Β
Mandelbrot and Julia sets
- Implemented in 100% pure Javascript.
- Click anywhere on the fractal to re-center.