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From: morris@jade.jpl.nasa.gov (Mike Morris)
Newsgroups: sci.electronics
Subject: Re: Sound Amplification by Combustion
Keywords: singing flames
Message-ID: <1625@jato.Jpl.Nasa.Gov>
Date: 20 Aug 89 00:25:51 GMT
References: <11652@cit-vax.Caltech.Edu>
Sender: news@jato.Jpl.Nasa.Gov
Reply-To: morris@jade.Jpl.Nasa.Gov (Mike Morris)
Distribution: usa
Organization: Jet Propulsion Laboratory, Pasadena, CA
Lines: 23

(Bobby Bodenheimer) writes:
>
> I'm new to this newsgroup, but someone told me there was a    
> discussion here a few months ago about amplifying sound by
> combustion or singing flames or something like this.
> 
> I'm interested in this so if someone could please provide
> background on the discussion, summarize it, or just give
> me some references, I'd greatly appreciate it. Also, is
> this newsgroup archived anywhere?
>
In 1969 I was touring Cal Poly Pomona during a science fair, and an exhibit
there was a "singing flame".  The student told me the original info was from
a old Popular Electronics or Radio Electronics.

The flame has excellent high frequency response, but a lousy low end.
It must be "doped" with some kind of a glass rod.
Sorry, that's all I remember.

Mike Morris
UUCP: Morris@Jade.JPL.NASA.gov
#Include quote.cute.standard   | The opinions above probably do not even come
cat flames.all > /dev/null     | close to those of my employer(s), if any.