Today, from young children to teenagers to adults, almost everyone around us has a barrier between their eyes and the vivid and vast world around them – concave lenses. Glasses and contact ...

By carefully placing nanostructures on a flat surface, researchers at Linköping University, Sweden, have significantly ...

By carefully placing nanostructures on a flat surface, researchers have significantly improved the performance of so-called optical metasurfaces in conductive plastics. This is a major step for ...

Scientists have created contact lenses that they claim allow people to see in the dark with the help of infrared light, an invention that could allow colorblind people to see colors again ...

A glasses lens can curve inward–called concave – to fix near-sightedness. Or the lens can curve outward – called convex – to fix far-sightedness. You can tell what kind of lenses you have ...

Infrared contact lenses using nanoparticles convert near-infrared (800–1600 nm) into visible light, enabling users to perceive infrared wavelengths without external power.

Save guides, add subjects and pick up where you left off with your BBC account. The questions in this quiz are suitable for GCSE physics students studying convex and concave lenses, real and ...