Watch a Machine Put Out a Fire WITH SOUND

You can put out a fire with nothing more than sound—and it doesn't even have to be eardrum-deadening, Marty McFly-flattening loud sound. This is Darpa's sonic fire extinguisher, and it sounds kinda like a foghorn. The extinguisher was developer to fight fires in small spaces, like plane... ... Continue reading this article at http://gizmodo.com/5925828/watch-a-machine-put-out-a-fire-with-sound