Well, a search for "youtube acoustic fire extinguisher" indicates it has already been invented a few times by people all over the world. The most interesting video is https://www.youtube.com/watch?v=ZvnCQg4w4o8
fsckboy 16 minutes ago [-]
I'll bet that high school girl's science was better than what's in that youtube (it doesn't set a very high bar)
very cool! Can we get a link to a not terrible website with real information?
cwillu 1 hours ago [-]
Bold of you to assume there is real information behind this.
nomilk 1 hours ago [-]
> Performing security verification
> Verify you are human
Does anyone else command + w on first sight of a cloudflare screen?
gonight 58 minutes ago [-]
I'll tolerate that but that new QR recaptcha that wants a selfie is 'hell fucking no' from me 100% of the time.
CamperBob2 35 minutes ago [-]
I sure hope humans are in the loop at those companies, reviewing pics that aren't recognized as faces. If I ever see one of those captchas, they'll get to see some things that no human has ever, or should ever, see.
CamperBob2 37 minutes ago [-]
Nah, I just have my clanker deal with it. It's better at those stupid puzzles than I am.
mitxela 7 minutes ago [-]
Cloudflare doesn't do puzzles. It either says you're a bot or you're not a bot.
copper-float 20 minutes ago [-]
Why does it matter that she's Mexican?
ajkjk 17 minutes ago [-]
Stereotyped as less of a STEM country, probably accurately, so it seems newsworthy plus gives people hope and optimism to hear about cool inventions from there.
yesitcan 5 minutes ago [-]
Because they’re known to have lower IQ making this ingenuity more remarkable.
lern_too_spel 8 minutes ago [-]
Because it's a Chilean blog about feel good stories in Latin America, just like it says on the tin.
fkgkglgkkh 11 minutes ago [-]
because of people like you who cannot read an innocuous detail without turning hysterical. if it doesnt matter why did you open your mouth?
Animats 50 minutes ago [-]
This seems to be a known technology but hasn't made it as a product.[1] It might have potential for very specific types of extinguishing, such as grills and grain silos, where the distance from extinguisher to trouble spot is fixed.
Not exactly acoustic but reminds me of a high school science project we had one year, something along the lines of put out a candle with a contraption. My partner and I rigged up a balloon to be popped by the candle, and the balloon pop blows out the candle. Probably not an original idea, but I don't think any other group in the class tried a similar approach. Worked like a charm.
spottedmarley 45 minutes ago [-]
Oooh.. from the title I thought this was about an extinguisher for when your guitar catches fire. Makes more sense now
rootedbox 43 minutes ago [-]
At other frequencies, sound can actually intensify flames, depending on the surrounding environment. Standing waves and the frequency of the sound (FM) are likely factors in this phenomenon. However, it’s not advisable to use sound as a method for extinguishing fires.
dosisking 40 minutes ago [-]
Instead of FM, maybe they can just use an AY-3-8910?
bawolff 54 minutes ago [-]
out of curiosity, would something like this hurt a human? I assume the sound waves must be pretty powerful to put out a fire.
ssl-3 1 hours ago [-]
> Ángela Karime Venegas Hernández is 16 years old and has an idea no one else had.
...meanwhile, some folks at George Mason University were doing this back in 2015[1]:
> The fire extinguisher uses low-frequency sound waves to douse a blaze. Engineering seniors Viet Tran and Seth Robertson now hold a preliminary patent application for their potentially revolutionizing device.
The reason this keeps getting reinvented is that the physics only half works. Sound disrupts the flame's boundary layer and separates it from the fuel, but it removes almost no heat. The fuel stays above its ignition temperature, so anything hot nearby relights it the second the speaker stops. DARPA demoed this in 2012 and it stalled there. Impressive on a small liquid fuel fire in a lab, very hard to scale to anything you'd actually want to put out.
rkagerer 8 minutes ago [-]
I wonder if one could use a thermal camera (or some other, high speed sensor) and some kind of feedback loop to squelch it and keep it disrupted until it cools. Or conversely, manipulate the flame for more complete combustion (in industrial processes).
But granted, I have trouble seeing this work on a large scale without much more sophisticated sonic wave tech.
Rendered at 03:46:53 GMT+0000 (Coordinated Universal Time) with Vercel.
> Verify you are human
Does anyone else command + w on first sight of a cloudflare screen?
[1] https://www.mdpi.com/2571-6255/8/4/129
...meanwhile, some folks at George Mason University were doing this back in 2015[1]:
> The fire extinguisher uses low-frequency sound waves to douse a blaze. Engineering seniors Viet Tran and Seth Robertson now hold a preliminary patent application for their potentially revolutionizing device.
[]: https://patents.google.com/patent/US10569115B2/en
[1]: https://www.youtube.com/watch?v=uPVQMZ4ikvM
That said, it's a solid student project. I'm sure she'll do well at university.
[1]: https://www.ifsecglobal.com/uncategorized/soundwaves-a-new-p...
[2]: https://www.esd.whs.mil/Portals/54/Documents/FOID/Reading%20...
Hate to be a downer, but this has been done before.
https://acoustics.org/pressroom/httpdocs/150th/Plaks.html
But granted, I have trouble seeing this work on a large scale without much more sophisticated sonic wave tech.