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29-03-2015, 01:30 AM
An honorable member of the Coffee Shop Has Just Posted the Following:
ENGINEERING STUDENTS EXTINGUISH FIRE WITH SOUND
Post date:
28 Mar 2015 - 5:34pm
http://therealsingapore.com/sites/default/files/styles/large/public/field/image/mama.JPG?itok=mqIK3udm (http://therealsingapore.com/sites/default/files/field/image/mama.JPG)
Imagine if all you needed to put out fire was a subwoofer. It's an idea that has been toyed with, theoretically, over the years -- DARPA demonstrated an acoustic extinguisher (https://www.youtube.com/watch?v=DanOeC2EpeA) in 2012, following prior experiments from other researchers (http://www.scientificamerican.com/article/when-fire-strikes-stop-drop-and-sing/). Now, for the first time, a handheld extinguisher exists that uses not foam, powder or water, but the waves produced by a low-frequency sound.
The prototype extinguisher was developed by computer engineering major Viet Tran and electrical engineering major Seth Robertson of George Mason University (https://www.gmu.edu/) in Fairfax, Virginia. The pair hopes their design could revolutionise firefighting, particularly in the home.
The technology is based on the way sound waves displace oxygen as they move through physical space -- oxygen that fire feeds on. If you can suffocate a fire, you can extinguish it, so the pair set to work. They discovered that music is unsuitable -- the sound waves it produces are inconsistent.
A higher frequency sound caused the flames to vibrate, but that was all. The lower frequencies -- 30 to 60 hertz -- seemed to be the so-called "Goldilocks zone" at which the waves were able to effectively keep the oxygen from the flames long enough to suffocate them.
See the video here: https://youtu.be/uPVQMZ4ikvM
*Read the rest of the article at http://www.cnet.com/news/engineering...re-with-sound/ (http://www.cnet.com/news/engineering-students-extinguish-fire-with-sound/)
Click here to view the whole thread at www.sammyboy.com (http://www.sammyboy.com/showthread.php?203767-Engineering-students-extinguish-fire-with-sound&goto=newpost).
ENGINEERING STUDENTS EXTINGUISH FIRE WITH SOUND
Post date:
28 Mar 2015 - 5:34pm
http://therealsingapore.com/sites/default/files/styles/large/public/field/image/mama.JPG?itok=mqIK3udm (http://therealsingapore.com/sites/default/files/field/image/mama.JPG)
Imagine if all you needed to put out fire was a subwoofer. It's an idea that has been toyed with, theoretically, over the years -- DARPA demonstrated an acoustic extinguisher (https://www.youtube.com/watch?v=DanOeC2EpeA) in 2012, following prior experiments from other researchers (http://www.scientificamerican.com/article/when-fire-strikes-stop-drop-and-sing/). Now, for the first time, a handheld extinguisher exists that uses not foam, powder or water, but the waves produced by a low-frequency sound.
The prototype extinguisher was developed by computer engineering major Viet Tran and electrical engineering major Seth Robertson of George Mason University (https://www.gmu.edu/) in Fairfax, Virginia. The pair hopes their design could revolutionise firefighting, particularly in the home.
The technology is based on the way sound waves displace oxygen as they move through physical space -- oxygen that fire feeds on. If you can suffocate a fire, you can extinguish it, so the pair set to work. They discovered that music is unsuitable -- the sound waves it produces are inconsistent.
A higher frequency sound caused the flames to vibrate, but that was all. The lower frequencies -- 30 to 60 hertz -- seemed to be the so-called "Goldilocks zone" at which the waves were able to effectively keep the oxygen from the flames long enough to suffocate them.
See the video here: https://youtu.be/uPVQMZ4ikvM
*Read the rest of the article at http://www.cnet.com/news/engineering...re-with-sound/ (http://www.cnet.com/news/engineering-students-extinguish-fire-with-sound/)
Click here to view the whole thread at www.sammyboy.com (http://www.sammyboy.com/showthread.php?203767-Engineering-students-extinguish-fire-with-sound&goto=newpost).