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.
Can You Put Out Fire with Sound? A video creating a buzz online shows a team of researchers putting out a fire with a loudspeaker, instead of a fire extinguisher. Known as the sound wind fire extinguisher， the device produces a low－frequency sound under 100Hz to douse flames. What is the principle behind this new technology and how effective is it in containing a fire?