Is the red line curved or straight? Attention, this image is an optical illusion. The so-called Hering illusion was discovered more than 150 years ago and named after the German brain and perception researcher Ewald Hering.
Is the red line curved or straight? Attention, this image is an optical illusion. The so-called Hering illusion was discovered more than 150 years ago and named after the German brain and perception researcher Ewald Hering.