Do we see colour the same way? What scientists can learn from artists

By Sasha Rakovich, Senior Lecturer in Physics, King's College London

As many people sit at the wheel of their car, they are certain they know what colour is. It’s the red traffic light in front of them, the garish yellow hatchback in the next lane, or the green verge banking to their right.

Colour, as many people understand it, is the property of a thing. That light is green. The sky is blue. But scientifically, that’s not quite true. No one can experience the exact same colour as you do. Colour is a perceptual experience created by our brains.

It’s the interaction between a material, light and the mind. The way a material absorbs and scatters…

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