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Re: New basis for Hyper-sensitive mic

Subject: Re: New basis for Hyper-sensitive mic
From: "Danny Meltzer" dannymeltzer
Date: Mon Oct 9, 2006 1:55 am (PDT)
Ok that is the coolest thing I've heard in a long time.  I want one. have to carry around 'moist air' with you.  I am pretty
sure that is not allowed as a carry on in most American airports ;)


--- In  Syd Curtis <> wrote:
> Of curiosity value, if nothing more, for any of you nat/recs technical
> experts, who haven't already read it the New Scientist magazine.
> Issue of 30 Sept 2006, p 29:
>     "California inventor David Schwartz has filed a patent (US
> on a hyper-sensitive microphone.  Instead of using sound waves to
force a
> heavy diaphragm to move, it fires a laser beam through a volume of moist
> air.  Incoming sound waves make water droplets in the air vibrate, which
> modifies the laser beam's strength in sync with the sound - in other
> making it act as a microphone."
> Cheers
> Syd

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