Extinguish fire with sound

Imagine if all you needed to put out fire was a sub-woofer. It’s an idea that has been toyed with, theoretically, over the years. Now, for the first time, a handheld extinguisher exists that uses not foam, powder or water, but the waves produced by a low-frequency sound.

The technology is based on the way sound waves displace oxygen as they move through physical space — oxygen that fire feeds on.

Read the full article at:
http://www.cnet.com/news/engineering-students-extinguish-fire-with-sound/