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Acoustic Invisibility Cloak Makes Objects Unhearable

Posted June 27, 2011 11:22 AM

From Popular Science:

A new acoustic invisibility cloak made of a plastic metamaterial makes objects invisible to sound waves, researchers say. It could be used to shield ships from sonar, or build better soundproof walls for concert halls and other spaces. We've seen this idea before, but now Duke University researchers have actually built it.

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Anonymous Hero
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#1

Re: Acoustic Invisibility Cloak Makes Objects Unhearable

06/27/2011 12:34 PM

This will be a big seller for married men.
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IanR
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#4
In reply to #1

Re: Acoustic Invisibility Cloak Makes Objects Unhearable

06/28/2011 5:32 AM

Thanks. I needed the laugh this morning

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Tornado
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#2

Re: Acoustic Invisibility Cloak Makes Objects Unhearable

06/27/2011 9:50 PM

Eh?

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user-deleted-1105
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#3

Re: Cloak Makes Objects Unhearable

06/28/2011 5:09 AM

Acoustic Invisibility ..
Hmmm, linguistically problematic surely? There will be trouble when the pedants arrive.
The red banner at the top of the page sounds funny to me.

Two canibals eating a comedian, one says 'Does this taste funny to you?'

My work here is done, swishes tail and is gone.
Del

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#6
In reply to #3

Re: Cloak Makes Objects Unhearable

06/28/2011 10:24 AM

Well, I never saw an Inaudibility Cloak on Star Trek...

(of course, it did take place in the vacuum of space)
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user-deleted-1105
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#7
In reply to #6

Re: Cloak Makes Objects Unhearable

06/28/2011 10:45 AM

Nah, the cone of silence was on Get Smart though
Del

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Anonymous Hero
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#8
In reply to #6

Re: Cloak Makes Objects Unhearable

06/28/2011 11:48 AM

You wrote, "(of course, it did take place in the vacuum of space)"

Nope, there was always audible explosions in space, too.
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#9
In reply to #8

Re: Cloak Makes Objects Unhearable

06/28/2011 1:26 PM

I wasn't going to go there (Star Trek's audible space explosions) ...

but I did have that feeling that somebody would!

(A bit of Dilbert in all of us)
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#11
In reply to #6

Re: Cloak Makes Objects Unhearable

06/29/2011 2:08 AM

I see what you're saying!

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#5

Re: Acoustic Invisibility Cloak Makes Objects Unhearable

06/28/2011 9:02 AM

Shoddy writing makes blogs unbearable.

Shock, horror, probe.

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metalSmiths
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#10

Re: Acoustic Invisibility Cloak Makes Objects Unhearable

06/29/2011 1:08 AM

Yes but HAL can read lips. 10 points for the correct answer.

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BigPete
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#12
In reply to #10

Re: Acoustic Invisibility Cloak Makes Objects Unhearable

06/30/2011 1:41 AM

You guys!!

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