Chapter 12.2, Problem 11R

To determine

To explain: Process of detecting colors by human eye.

Answer to Problem 11R

Brain and human eye mutually translate a light into colour.

Explanation of Solution

Introduction:

Human eyes have three types of cone. Each of these cones responds to a different range of wavelengths.

Light enters the human eye (healthy) through a lens and also, is focused on retina (made-up of two light detecting cells). So, when the light enters eye (human) and hits the retina cone cells (one type of cell in retina) allows differentiating various colors. The cone cells send nerve impulse to the human brain, which interprets the different combinations of wavelengths as different colors.

Conclusion:

Human eyes can see different types of colour.