Bauhaus Optical Color Mixer by Naef

The optical color mixer shows how the rotation of the top creates an optical mixture of colors. Aspects of color theory can be experienced through the seven interchangeable cardboard discs. The color circles according to Goethe and Schopenhauer, right up to Hölzel, can be sent into orbit and then compared with each other. The backs of the discs provide information about what is seen.