Two engineering students from George Mason University in Virginia, America have stunned their professors by inventing a fire extinguisher that uses sound to put out flames.
By blasting a fire with low frequencies between 30 and 60 hertz range, the extinguisher separates oxygen from fuel, explains inventor Viet Tran, who built the device with fellow student Seth Robertson. â€œThe pressure wave is going back and forth, and that agitates where the air is. That specific space is enough to keep the fire from reigniting.â€
Watch the short Video below.