Optical Society of America

Picosecond Oscilloscope

An oscilloscope is a device for displaying signals that are too fast to be seen by the human eye. Typically the signal consists of a voltage level that changes quickly moment by moment (over millisecond to nanosecond timescales). ...

May 26, 2009
4 / 5 (5) 0

A better imager for identifying tumors

Before they excise a tumor, surgeons need to determine exactly where the cancerous cells lie. Now, research published today in The Optical Society's (OSA) journal Optics Letters details a new technique that c ...

Jun 19, 2014
5 / 5 (4) 0

Ever tried a 'laser delicious' apple?

The ability to detect when to harvest "climacteric" fruits—such as apples, bananas, pears and tomatoes—at the precise moment to ensure "peak edibleness" in terms of both taste and texture may soon be ...

Dec 03, 2014
5 / 5 (4) 3

All That Glitters Is Now Gold

(PhysOrg.com) -- In full sunlight at mid-day, gold objects are brilliant and richly colored. Put those same objects in a dark interior room with only fluorescent lamps, however, and they will look pale and ...

Oct 01, 2009
3.4 / 5 (5) 0

Long distance, top secret messages

When the military needs to send the key to encrypted data across the world, it can't necessarily rely on today's communication lines, where the message could be covertly intercepted. But physicists at the Georgia Institute ...

Oct 19, 2010
4.3 / 5 (4) 0 | with audio podcast