The device has 15 pendulums. The strings of the pendulums are of different lengths, which are installed one after the other in order of length from one side of the device to the other. This difference in length causes a difference in the oscillation frequency of the pendulums.
The experimenter guides a long horizontal plate by rotating a mechanical arm and with it, deflects all the pendulums to one side and then releases them all at the same time.
The oscillation of these 15 pendulums with 15 different frequencies creates fascinating, beautiful and unexpected landscapes one after another.