Monovision contact lenses, a common prescription, corrects each eye for a different distance, causing one image to be blurrier than the other and prompting some to misjudge the distance of a moving ...

Having a good weekend? Got some sun? Great. Grab some sunglasses and stare at the computer screen. We’ll show you an example of the Pulfrich illusion. The Pulfrich illusion, or Pulfrich effect, was ...

Motion is characterized by a series of positions an object traverses over time. An object presented sequentially at two positions, with a time delay between them, is sufficient for us to perceive ...