Diagram: how a red surface turns white daylight into red light

Foundations

Light and Seeing

What color is before it reaches the canvas, and how the eye reads it

Color begins as light. These pages follow it from a light source, off a surface and into the eye and brain. They also show why a color that seems fixed can shift when the light does.


  • The band of wavelengths we can see
  • Why lights add up to white while paints add up to dark
  • Three kinds of cone and the brain's comparison
  • Changing light, constancy, and colors that match under only one light

Works in this part

Image: Made for this site · Original work

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