We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. Back to Healio Contact lenses incorporating negative ...

Life is full of ups and downs, but some people seem to have an uncanny knack for zeroing in on the downs. These folks are the pessimists, the naysayers, and the glass-half-empty crowd. Recognizing ...

Robyn Williams: John Pendry (Sir John as he's recently become) is working with boggling stuff, nanomaterials which defy accepted optical rules. Make a lens, called a Veselago lens after the Russian ...

A Princeton-led research team develops three-dimensional "metamaterials," which they hope will someday produce lenses that eliminate image distortion For years, researchers have struggled to find an ...