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Viet Tran and Seth Robertson's new blaze extinguisher looks a tiny complex to a confirmed one, but otherwise of a compressed environment tank spewing out chemicals, theirs has a loudspeaker the size of subwoofer drumming out sound waves.
It's not much to hear to, just a low hum, but following tart at flames, it makes them vanish.
In a habit, it's as soon as blowing the fire out, because sound waves are basically complex, regular blasts of ventilate.
When they started out, Tran and Robertson thought high-pitched tones would show the trick. It didn't produce a result.
"It's low-frequency sounds -- back the thump-thump bass in hip-hop that works," Tran said.
No mess, no smell
With water, powder, foam and chemicals, there are already many means of dousing a flare, for that excuse it may be proud to imagine what sense it makes to proceed a choice one.
But putting out a blaze usually leaves astern a big mess -- chemical residue in all cranny, or gushing water that ruins what flames unsuccessful to devour.
Sound waves are much cleaner.
Tran envisions the supplement extinguishers starting out little, perhaps mounted on peak of stovetops to put grease fires. Or astronauts could deploy them.
"In declaration, extinguisher contents press to the fore all well ahead than. But you can attend to solid waves without gravity," Robertson said.
Thought they'd flunk
Robertson and Tran appear to have beaten a marginal note agency to the punch, according to George Mason University, where the two developed the extinguisher as a sort of senior year resolved exam.
The Defense Advanced Research Projects Agency has control experiments upon blasting out ember once sealed but don't appear to have developed something as available as an extinguisher.
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