Why you might see a hidden property of lightDiscover a potential sixth sense using your phone screen.

From the show

Brain Perception Illusions

Some humans can perceive a 'hidden' dimension of light that most are unaware of. This entoptic phenomenon, called Haidinger's brush, is a faint, bow-tie shape that can be seen by looking at a polarized source like an LCD screen. This ability is linked to pigments in your eye and can even indicate macular health. It's a simple at-home experiment that reveals a sensory capacity shared with animals that use it for navigation.