Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!apple!vsi1!wyse!mips!prls!gordon From: gordon@prls.UUCP (Gordon Vickers) Newsgroups: sci.electronics Subject: Re: Sound Amplification by Combustion Message-ID: <25149@prls.UUCP> Date: 23 Aug 89 16:26:59 GMT References: <11652@cit-vax.Caltech.Edu> <1625@jato.Jpl.Nasa.Gov> <3738@internal.Apple.COM> Reply-To: gordon@prls.UUCP (Gordon Vickers) Distribution: usa Organization: Philips Research Labs, Sunnyvale, California Lines: 12 I remember that article too. I was in high school at the time and we tried it in our electronics class. Our flame was barely adequate, four to six inch high (I think a minimum of six inches was recommended). The sound was pretty distorted but we didn't concern ourselves with impendance and flame size was too small. We just used a common propane torch. As I recall, the article mentioned (or suggested) connecting ones HiFi to a central heating furnace. Maybe a nice idea unless you want sterio :-) Hmmm, if NASA hears of this, I wonder if they'll start playing the National Anthem during shuttle launches ? :-)