"I see something you can't see, and that's green!" This saying from an old child's play is based on the assumption that there is a common perception of colors. Colours would therefore be an objective reality independent of the viewer. Or is color just an illusion created by our brain?
Are colors real or just a deception of our brain? © agsandrew / thinkstock
Is a tree really green - even if nobody sees it? And when we see colors, do we share this experience with others, or does each individual perceive something different? Mankind has been preoccupied with these questions for thousands of years - and science has given and gives different answers to them.
Part 1: All illusion?
The debate about the reality of our perception
Part 2: From the waves to the stimulus
Physics and color perception
Part3: From the stimulus to the subjective sensation
What does neurobiology say?
Part 4: Why the tree is green after all
The objectivity of colors
Part 5: When green does not seem to be equal green
The relationality of colors
Part 6: Only the interaction makes it
Color emerges from the relationship between living beings and the environment