Colour Vision Simulation

We see colour with three kinds of cone cell, most sensitive to red, green and blue light. Mixing those three coloured lights in different amounts can match almost any colour we see — that is additive mixing, and it is how every phone and TV screen works. A filter, by contrast, removes colours from white light rather than adding them.

In this colour vision simulation you shine red, green and blue lamps at a person and see the colour they perceive, then try a single bulb of any wavelength with a filter in the beam. Show the light as a solid beam or as photons. It suits The Human Eye and the Colourful World in Class 10.