1001
Space
Earth
Nature
History
Human World
Science and Technology
Chemistry
Materials
Force and Energy
Electricity and Magnetism
Industry
Machines
Electronics and Computers
Cars and Trucks
Railways
Ships
Aircraft
Fishing and Agriculture
Undersea Exploration
Back Home
How do our eyes detect light?
At the back of the eyeball is a layer of light-sensitive cells, called the retina. Photons (packets of energy) in lightwaves stimulate the cells of the retina and send messages to the brain, enabling us to see. The retina's rod-shaped cells work best in dim light, and its cone-shaped cells, which detect colour, in bright light.
Related Image
 
Previous:
Back
Book:
1001
Section:
Science and Technology
Chapter:
Heat and Light