The intensity of the red, green and blue LEDs of the Colour Mixer can be individually adjusted. Easily vary the intensity of any or all of them. Demonstrating additive colour mixing on a set of three special screens that are included. Show how white light is produced and explore the secondary colours of cyan, magenta and yellow. Vary the intensities to produce nearly any colour.  This experiment provides a simple way to demonstrate how televisions produce a full range of colours. With the use of coloured filters (toffee wrappers) and sweet wrappers investigations into colour transmission and reflection may be performed.

Investigations of coloured shadows may also be performed.