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
4.6 / 5 (13) 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

Giving LEDs a cozy, warm glow

When the 2014 Nobel Prize in physics was awarded this October to three Japanese-born scientists for the invention of blue light emitting diodes (LEDs), the prize committee declared LED lamps would light the ...

Nov 19, 2014
4.1 / 5 (7) 1