Full dark adaptation, such as going from constant light to sudden darkness when turning out one's bedroom lights, takes about _____ minutes.

Thomas Young's theory of color vision

Cones are the special cells responsible for

In opponent-process theory, there are _____ primary colors.

The three aspects to the perception of light are brightness, color, and

Where is the retina located?

What are the three primary colors of light?

A highly saturated red color would contain _____ wavelengths.