Optical Society of America

Bake your own droplet lens

A droplet of clear liquid can bend light, acting as a lens. Now, by exploiting this well-known phenomenon, researchers have developed a new process to create inexpensive high quality lenses that will cost ...

Apr 24, 2014 4.9 / 5 (12) 0

Redefining time

Atomic clocks based on the oscillations of a cesium atom keep amazingly steady time and also define the precise length of a second. But cesium clocks are no longer the most accurate. That title has been transferred ...

Apr 30, 2012 5 / 5 (7) 41 | with audio podcast