Using Sound to Fight Fire
New generation flame extinguisher that puts out flames by only playing heavy bass . So , you can put away your water or chemicals fire extinguisher
It might sound like a party toy but this sonic fire fighter actually can put out a fire with sound waves spread through a subwoofer gun. The idea was so great that the project become very well known .
https://www.indiegogo.com/projects/afss-using-sound-to-fight-fire#/
Hunter: 
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