Our eyes can only see light in a certain range of wavelengths - the kind we see from the sun or a lamp. The light we see comes in a rainbow of colors and white light, like sunlight, is made up of all these colors combined. When we look at an apple, light with many different wavelengths shine on its surface. The apple absorbs the colored rays of light - except the red. This information helps us to judge that the object we're looking at is an apple and not, say, a baseball or a peach.
Black objects absorb all different wavelengths of light.
And white objects reflect all the colors back to our eyes. The more we learn about color, the more we learn that color is a matter of perception. Wednesday In order for us to see color, we need light. And of course we need our eyeballs. Delicate muscles in the iris open and close the pupil, regulating the amount of light that gets inside the eyeball.