Ray-tracing

I like making nice pictures with a ray-tracer. Normally I use rayshade, with the image definition generated by a couple of programs I've written.
This has resulted in the following images, the non-glass images where done to debug the code for describing the bottle:

Here's the results of playing a bit with alternative lighting schemes and different shapes:

A nice screen background (1280*1024):

This is a small version of the image that ended up as the cover of the December 2000 issue of Pour la Science

These are bullets I've made for some of the other pages.

Other methods

I've been playing around a bit with a nice program called Terragen which has resulted in this, which is part of an animation I'm putting together.