The three sliders allow you to change the brightness of the three colours to create millions of different colour combinations and mixes. The different combinations of the three basic colours red (magenta), blue and green result in up to 16.3 million different colour tones, which can be produced by the controls.
Further informationson the exhibit "Light mixer"
However, the human eye can only distinguish a maximum of 200 different colours. All colour lights together produce pure white light. But if you take away every light, a black surface is created.
Here you experience the "additive colour mixture" that we all know from television and colour printing.