Dear friends! In December 2014, the Pre-Civilization: Bronze Age will be released here! If you have a Steam account please VOTE for Pre-Civilization: Marble Age! (Please! Create and lead your own tribe from first human-primates lived 4 million years ago to the first civilizations of Ancient Egypt and Mesopotamia.
Retina: The retina is the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain. There is a small area, called the macula, in the retina that contains special light-sensitive cells. The macula allows us to see fine details clearly.
1 Retina: getting its name from the Latin meaning net, the retina is located at the back of the eye and is where light is detected... 2  more. 3  Trillion: 1,000,000,000,000. 4  Wavelength: a property of photons that determines their energy (how strong they are).We see photons of different wavelengths as different colors.