Engineering students extinguish fire with sound – CNET

Imagine if all you needed to put out fire was a subwoofer. It’s an idea that has been toyed with, theoretically, over the years — DARPA demonstrated an acoustic extinguisher in 2012, following prior experiments from other researchers. 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.

CNET

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