Buzz
Sound has been utilized by scientists for remarkable feats, including levitation and brain surgery. Recently, its potential to extinguish fires has been demonstrated.
George Mason University students Seth Robertson and Viet Tran have pioneered a method to utilize sound as a fire extinguisher. Low-frequency sound waves, akin to the deep bass in hip-hop music, can displace oxygen. When oxygen is pushed away from the fuel source, the fire is deprived and extinguishes.
The duo embarked on their project after discovering sound's ability to disrupt flames. Finding no existing products, they decided to create their own. Initially experimenting with high-frequency sound (20,000 to 30,000 hertz), they discovered that 30 to 60 hertz was the most effective range. They also realized that music was unsuitable due to inconsistent sound patterns.
Their invention is a compact, portable device resembling a traditional extinguisher. A frequency generator, connected to a power source, directs sound through a cardboard tube to a specific area. When aimed at a fire, the flames are dispersed as if by magic.
This innovation holds significant promise, not only on Earth but also in space. "Fire poses a major challenge in space," Tran mentioned in a release. "In microgravity, extinguisher materials scatter everywhere. However, sound waves can be precisely directed without gravity," Robertson added. The absence of foam makes it ideal for outdoor or confined spaces where additional cleanup would be impractical.
While the project shows immense potential, it has yet to be patented. "We still need to conduct extensive testing," Tran stated.
Kenneth E. Isman, a clinical professor at the University of Maryland, informed the Washington Post that the invention has certain limitations. "A key issue with sound waves is their inability to cool the fuel," Isman explained. "Even if the fire is extinguished, it can reignite unless the fuel is removed or cooled."
