The spooky season is upon us, and with it the race to come up with the geekiest way to scare the kids. Motion-activated jump-scare setups are always a crowd-pleaser, but kind of a cheap thrill in our ...

Remote ultrasonic arrays made of visible and invisible laser radiation are used to provide ultrasonic images of the interior of solids such a metal parts. Adaptive Laser Induced Phased Arrays are ...

Detecting objects underwater isn’t an easy challenge, especially when things get murky and dark. Radio waves don’t propagate well, so most techniques rely on sound. Sonar is itself farily simple, ...