The human eye can see 500 shades of grey.

The human eye can see 500 shades of grey

More from the Human Body Facts niche...

Human Body Facts

An eye is composed of more than 2 million working parts

Human Body Facts

On average, your gut contains around 100 trillion microbes which help

Human Body Facts

94% of visible premature-aging around the eyes is caused by UV damage

Human Body Facts

Scientists believe that processing your vision uses around half of the

Human Body Facts

It takes more muscles to frown than it does to smile – around 43 grumpy

Human Body Facts

In the right conditions and lighting, humans can see the light of a