My name is Søren Peo Pedersen, and I mainly contribute at the danish Wikipedia. I often create illustrations for articles, and I have just begun moving high-resolution copies of "my" illustrations onto Commons.
I mostly use the Persistence of Vision Raytracer (see http://www.povray.org), or "POV-Ray" in short, to create my illustrations: This program is freeware, and it accepts a sort of "image description" written in a C-like "language". I will strive to include the "code" for my images for the illustrations that I upload to Commons, so that others may modify them and/or re-render them in new sizes and resolutions to suit various purposes (e.g. very high resolution for printing).
Here is a list of what I've uploaded so far.
- Cathode Ray Tube for color TVs and monitors
- Cathode Ray Tube for black-and-white TVs and monochrome monitors
- Cathode Ray Tube for oscilloscopes
- Diagram of a current divider
- Euclidian and non-euclidian geometry, demonstrated on three "slabs" with lines and point drawn on top of them
- Hall effect
- Image:Opamp diagrams and pinout.png
- Tackle principle: Should have been named Pulley principle, because that's what is shows
- Two jack plugs in the "standard" size, one stereo, the other mono
- Rainbow formation: Shows how the primary and secondary rainbows are formed
- Diagram of a voltage divider