CAN A FOR­EST FIRE BE EX­TIN­GUISHED WITH SOUND WAVES?

iD magazine - - Questions & Answers -

It takes a cer­tain amount of time for fire­fight­ers to reach the lo­ca­tion of a blaze af­ter be­ing alerted about it. In that time a de­vice called the Fire­sound might have al­ready done the heavy lift­ing— with­out even us­ing any wa­ter. Although still in its con­cep­tual stages, the 3-foot-wide, 1-foot-tall drone can be used to pa­trol parks and forests. If it dis­cov­ers a fire that’s just break­ing out, it emits lowfre­quency sound waves to snuff out a small fire be­fore it can grow by mov­ing just enough air to de­prive the fire of its fuel, ef­fec­tively starv­ing it. Most of the Fire­sound’s com­po­nents al­ready ex­ist, so it should not be very long be­fore these vig­i­lant elec­tric drones are up and run­ning.

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