A Mexican student wins a gold medal in Indonesia with a sound-wave fire extinguisher! π₯
Interesting. The system produces a steady 30 Hz signal that the speaker turns into strong air movement directed at the flame.
This airflow forms small vortex rings (doughnut-shaped puffs of turbulent air) that travel toward the flame. The vortices and oscillating air agitate the mixing zone at the base of the flame. They stretch and distort the flame front, interrupt the steady inflow of fresh oxygen, and temporarily separate the fuel from the oxidizer. The combustion reaction becomes unstable and the flame extinguishes.
Unfortunately, this only seems to work for small flames, and reignition can occur once the the device is turned off, because the material is still very hot.
Correction
nitter.cf/Masiza3912/status/2115β¦
For battery EV fires too we hope
@elonmusk @realDonaldTrump
What? This doesn't sound right.. I thought it was students at George Mason University that had this idea first?
wusa9.com/article/news/localβ¦
First made 2015 and improved recently. I'm nearby the school.






































