Physicists in the US have made the first ultrathin flat lens. Thanks to its flatness, the device eliminates optical aberrations that occur in conventional lenses with spherical surfaces. As a result, ...

From ribosomes assembling proteins to viruses attacking cells, the main dramas in biology happen on a scale that is, tantalizingly, just one order of magnitude below the resolution of the best optical ...

When light passes through materials, it typically changes direction and bends in predictable ways. This change in direction, ...

A new laser under development by BAE Systems could boost a high-flying airplane's ability to spot targets on the ground, creating a temporary floating "lens" in midair that magnifies objects. The same ...