Optical Society of America

Optical sensors improve railway safety

A string of fiber-optic sensors running along a 36-km stretch of high-speed commuter railroad lines connecting Hong Kong to mainland China has taken more than 10 million measurements over the past few years in a demonstration ...

Sep 30, 2013
3.5 / 5 (2) 0

Spinning CDs to clean sewage water

Audio CDs, all the rage in the '90s, seem increasingly obsolete in a world of MP3 files and iPods, leaving many music lovers with the question of what to do with their extensive compact disk collections. ...

Sep 23, 2013
4.6 / 5 (17) 5 | with audio podcast