Optical illusions occur because of the way our brain processes visual information. The human vision system is complex but not ...

The orange ball crested the northeast horizon behind the Heel Stone, the entrance to the stone circle, and shone its beam of light into the center of one of the world’s most famous prehistoric ...

A surprising trick that allows a beam of light to be completely absorbed even in the thinnest of layers: Using mirrors and lenses, a 'light trap' can be constructed, in which the light beam is ...