What does it mean that color a “visual phenomenon”? Does color not exist outside of our brains?

Question

What does it mean that color a “visual phenomenon”? Does color not exist outside of our brains?

In: 22

Answer 1

Yes and no. The length of the light waves do change, which is what causes us to see different colors of light, but the actual “colors,” themselves are entirely produced by our brain.

Outside of our brain colors would be more similar to blades of grass: all the same “thing,” but all different lengths. If those blades of grass were light waves, we would see each individual blade of grass as a different “hue,” with shorter blades being closer to red, medium being closer to green, and longer ones being closer to violet.