Why every human has a blind spot - and how to find yours
They do have literal ones, though. Because of the way the eye is constructed, every human being does ... and your mind will fill in the background color of the paper when the mark gets in your blind spot. You don't see as much of the world as you think.
How Far Can the Human Eye See?
On a dark night, you could even see a candle flame flickering up to 30 mi. (48 km) away. How far the human eye can see depends on how ... two adjacent cone cells — the elements in our eyes that produce color vision. Under ideal conditions, an object ...
Color of the Moon
And why does the Moon look gray in many photographs, especially the ones from space? What color is the Moon? The photographs of the Moon, taken from space are the best ... eye. The maria cover about 16% of the lunar surface, mostly on the side we can see ...
The Science Of How Eyes Glow In The Dark
When we see animals' eyes in photos, nature films, flashlight beams, and headlights we see them shining back at us — but human eyes only glow bright red in photos. What causes the shine? What causes the color ... but it does so just a little differently ...
Do Dogs See In Color? New Study Shows Canines Do Depend On Color Perception
How do dogs see ... colors, and consequently that canines are not colorblind. But dogs are believed to see only shades of yellow, blue, and gray. That's because their eyes have only two types of color-sensitive "cone" cells as compared to three in the ...