eyes

Humans Have Been Able To Perceive Infrared Light This Whole Time 

The human eye is a more complex and mysterious thing than we thought. Recently, a group of scientists were puzzled by flashes of green light they saw from an infrared laser, whose light should have been far outside the visible spectrum. Like scientists do, they investigated. Human eyes do indeed perceive infrared light, they found, but not they same way they perceive ordinary colours. It’s weirder than that.


The Eyes Of Animals Look A Lot Like Alien Worlds

Continuing his fantastic series of macro shots of the eyes of animals, here is Suren Manvelyan’s Animal Eyes 3. The close up shots of the fish and reptiles and other animals in this series look positively alien when seen up close. I thought they were artist’s rendering of deep space planets from a sci-fi movie.


Why Are Stars Star-Shaped?

Our sun is spherical, so why is it that other stars look… star-shaped in the night sky? Actually, it’s all down to the quirks of light and your (imperfect) eyes.


The Man Who Grew Eyes From Scratch

Growing nerve tissue and organs is a sci-fi dream. Moheb Costandi met the pioneering researcher who grew eyes and brain cells.


The Weird Pattern On This Girl's Eyeball Is From An Airbag

Airbags certainly do save lives, but getting hit in the face at 200 mph — even by a bag of air — is not without its consequences. A teenage girl in Michigan got a real eyeful when an inflating airbag actually left its mesh pattern on the surface of her eye.


Not Everyone Sees The Same Colour When They Stare At This Spinning Disk

The spinning disk below is a little seizure-inducing, but it’s a lot of fun because not everyone sees the same colour when it spins. Some people see green, others see yellow, a few see red, while some see no colour at all.


This Colourful Image Disappears Completely If You Keep Staring At It

It’s always fun to play a trick on your eyes. They’re so easily fooled! Take this illusion, for example. It’s an old favourite. If you stare at the image long enough, the colours in the picture start fading away and eventually disappear. The colourful blobs shrink like evaporating water puddles


Looking At Orange Light Is Like Drinking A Cup Of Coffee

Light is an incredibly powerful force. Sure, it helps us see and gives us fast internet, but medical researchers keep stumbling upon new positive side effects. A team of Belgian scientists, for instance, just discovered how a 10-minute blast of orange light increases brain activity related to cognition and alertness.


What Is The Resolution Of The Human Eye?

The new iPhone camera is eight megapixels. Meanwhile, Canon is reportedly testing a new DSLR with 75 megapixels. But how many megapixels is the human eye? That is, how many megapixels would an image the size of your field of vision need to be to look normal?


This Simple App Can Train Your Brain To Have 20/7.5 Vision

Everybody wishes they had super powers. The big problem with that shared ambition, however, is that super powers do not exist. Not unless you count super human vision. That does exist, and a new app promises to help you attain it.