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Acoustic Superlens Built From Soda Cans
Freddybear writes "Researchers in France have assembled an acoustic superlens from an array of soda cans. The cans act as resonators, and by exciting the array with tailored sound waves, the sound volume can be made to peak in specific volumes less than a few centimeters wide."
Why can't we have more articles about comic book movies, video games, political partisanship and trading music in the name of human rights instead of this garbage?
Pah... Real men would use beer cans!
That is all.
Can someone decipher this insane technobabble?
This is the perfect solution to getting the neighbor to turn down their stereo
Given the idea of directing sound waves, if this could be done with an inaudible frequency, for imaging, would sound waves be able to penetrate clothing?
This is coming from someone who is not modest, so the scope part of the scope&grope doesn't bother me.
Radiation, however, is one of my many, only weaknesses.
Something witty.
Here's a tip: those speakers suck. I just tossed a pair because the left speaker was about half as loud as the right speaker. Don't believe me? http://www.google.com/search?q=logitech+speaker+left+not+working
I only mention this because I would think with a scientific experiment like this, speaker volume consistency would be VERY important...
FTFA: "The team managed this through time reversal...."
I think this poster made a reference to the bug with the "singing penis". Don't quote me on that though.
The more you know, the more you have to say and the more you should listen.
Here's another tip:
Google 'Stereo balance control'
Please allow my duplex neighbor to be an early prototype tester. That sonofabitch has a big-screen TV (in his bedroom!) with a very bass-heavy sound system, and he just can't sleep without it on.
I only post comments when someone on the internet is wrong.
Acoustic Superlens Built From Pop Cans :P
FIFY
"the sound volume can be made to peak in specific volumes less than a few centimeters wide"
Sounds really interesting if only I had the slightest clue what it means.
Hah, I actually did that. Maybe it was less than 50%-- the volume was so low it was really lame to equalize both to the lowest denominator. Not to mention when I'd plug in my headphones I'd have to go reset the balance because the physical defect didn't affect the headphone jack on the speaker.
all I got from that was that each can resonates at about 420 Hz
all consumer grade speakers suck, they never use big enough drivers and never enough air volume so you end up with tin cans and a floppy sub that instadistorts whenever a female voice comes though for the ultimate in ass
buy a decent monitor set, or if that is out of your budget at least get some beefy drivers and do a little bit of math to make a correct size enclosure
Our research was sound, our results undeniable. We would propel the world with our acoustical actuators. Every day brought new discoveries ... until today.
As the echoes of a blaringly successful session faded, Geoffroy shouted, "Alright, Lemoult!"
Our apparatus rang, then exploded. The devastation ... The horror ...
Today I learned my name is a killing word.
So... are they gonna hook them all together with strings?
I wonder what the range would be if you used very low-frequency, specially-built resonators and a few megawatts of power. Maybe you could throw it out about a wavelength and burst organs through body armor at 50 yards.
This is the New Slashdot(.com.au), after all, where every submission is accepted if it is evenly remotely Australia-related.
Mirrors is the answer. Wait. Forget that. I have to patent mirrors before I can make this comment. Hold th' phone I'll be back in a camera flash! Back.
......for ruining what used to be a nice tech-news website, you inane mindless babbling stupid ignorant fuckwit infantile cretinous droning pointless waste-of-oxygen-and-food repetetive gob-shite bastards.
They built a sound gun into a time machine out of cans of coke! :"Acoustic actuators harness sound waves to physically move objects" and "The team managed this through time reversal"
FTFA
Can you kill people with it?
Can they make a car version that has the sound peak in the area of the drivers head so I don't have to listen to the crap from the hoopties on the highway in rush hour. If they can't then can we ban old Chevrolet Caprices on 22 inch chrome spinner rims?
Time to offend someone