How Do We See Colors?
In Korea, everyone enjoys the changing colors of the four seasons.
You might, then, be curious about how humans can see colors.
In simple language, the eyes and the brain work together to change light into color.
When we look at things, our eyes send signals to our brain.
The brain, in turn, processes these signals and helps us perceive all the colors.
More specifically, light travels into our eyes and the colors we see are really reflected light.
Light contains all the colors of the rainbow, such as red, green, blue, and others.
However, objects do not contain any colors.
An apple, for example, does not have any red “in” it.
Instead, the apple reflects the light’s red color and absorbs the other rainbow colors.
That is why apples appear red to us.
Our eyes contain millions of cells that can detect colors.
Accordingly, humans can see up to 10 million different colors.