You think to know how a pendulum behaves? Think again, our double pendulum blows minds. It makes the funniest movements whose sequence isn’t predictable. The analysis of such phenomenon in mathematics went down in history under the term "chaos theory".

In school, one predominantly learns mechanical or electric systems that demonstrate a simple oscillation behavior, for exam- ple a simple pendulum. Its movement is easily predictable. This does not apply to our double pendulum. Though it is possible to describe the motion mathematically through a system of differential equations, this system of equations can only be solved approximately for certain starting parameters. It is not possible to predict the motion sequence for random starting points in the long-term. Minimal changes can cause enormous differences.