Observing and understanding natural phenomena - this is the motto of principia. The new website (in German) is dedicated to patterns, structures and other phenomena that you can observe around you. It is curated by Andrea Kamphuis and Stephan Matthiesen.

Exactly 10 years ago, in December 2008, we started to describe …

Welcome to my revised Website. Much has remained the same, but there are are also a few changes and plans for the future. Enjoy reading!

The most important change is the new comments function. In the sections "News" and "Texts/Blog" you can now directly respond to articles. I'm looking …