The Pythagoras tree is a fractal invented by the Dutch mathematics teacher Albert E. Bosman in 1942. This set belongs to a type of fractals called L-systems. L-systems are a type of fractals that may resemble branching patterns, such as in plants, biological cells, blood vessels, etc.

The mathematics behind fractals began to form in the 17^{th} century by the work of the mathematician and philosopher Gottfried Leibniz. A fractal is a mathematical set that makes a repeating pattern at every scale creating an expanding symmetry. If the repetitions are exactly the same on every scale it is called a self-similar pattern. Many patterns in nature shows some form of statistical self-similarity, and can be approximated by using fractals.

image source: http://www.marekfiser.com/Projects/AnimatedPythagoras

invented by: Albert E. Bosman

fabrication process: fractal