From Upsocl · · 1m 10s
She puts out fires with sound
A 16-year-old in Tamaulipas built a fire extinguisher that needs no water, no foam, just low-frequency sound.
In brief
A 16-year-old in Tamaulipas built a fire extinguisher that needs no water, no foam, just low-frequency sound. Low-frequency sound waves push oxygen away from a flame, so a speaker and a battery can do what a chemical extinguisher does, without the residue. Originally reported by Upsocl.
A candle, no breath
Ángela Karime Venegas Hernández, 16, studies at CETIS 78 in Altamira, Tamaulipas. She set out to kill a flame using nothing but sound.
“put out a candle without blowing, without water, without anything but sound”
Battery, generator, speaker
The build is three parts: a 12-volt battery, a frequency generator, and a speaker firing 30 pulses per second.
Sound shoves the oxygen
Those low-frequency pulses push oxygen away from the flame. The fire starves and dies in five to eight seconds.
“That vibration pushes oxygen away from the flames”
More than 100 tries
She ran the test over and over until it held up on wood, flammable liquids, cooking grease, and electronics.
Nothing left behind
No pollution, no residue on whatever was burning, no harm to the person holding it. That matters for kitchens and server rooms.
“It does not pollute, leave residue, or hurt the person using it”
Vortex Tech goes global
The school experiment now has a name and a passport. Ángela will represent Mexico at an international science fair.
What it means
Low-frequency sound waves push oxygen away from a flame, so a speaker and a battery can do what a chemical extinguisher does, without the residue.
