Re: Help with Singing Arc references

Norman Wootan ( normw@fastlane.net )
Sun, 19 Jul 1998 13:39:42 -0500

Magnetic quenching of an arc will create a musical note. I have an old
physics book that explains how musical notes are produced by a hydrogen
flame in a tuned tube. It is caused by the momentary expansion then
sudden rarification caused by the implosion of the hydrogen and oxygen
re-combinning into water vapor. The magnetic fields being created in
your tuned arc are probably the source of the musical note. Ref:
Research and Writtings of Nikola Tesla. Norm

Jerry W. Decker wrote:

> Hi Folks!
>
> This interesting note was posted asking for help, if you have info,
> please contact Norris directly, thanks;
> ====================
> Years ago I investigated what we call induction arcing.
> This when the voltage at a break in a dc current to a
> large inductor rises so that it enables an arc to form.
>
> A lot of energy seems to be concentrated in that arc, at
> the time (early 90's) I thought there might be a free energy
> effect. After all I was melting metal with 150 watts input.
>
> In the study of the power supply it was noticed that a
> higher capacitance placed in parrallel with the pulsed DC
> from the rectification system would yield both higher voltage
> and better arcing. Normally I used about 10 microfarad for the
> filter. This was for a 56 Henry air core inductor. Then it
> occured to me to try an extremely low value that could
> resonate with the 120 hz pulse.
>
> This turned out to be hundreds of times lower , about .03
> microfarad. The induction arc then took on an amazing
> penetrating laser like action.
>
> One day while playing with this the whole garage started
> resonating with a high pitched sound! This was the strangest
> experience, the sound seemed so all engulfing as if the
> whole garage was vibrating.
>
> Chalk this up as an analomous phenomenon, as we were never
> again able to produce this effect which lasted about 5
> seconds.
>
> I recall something about the early day of radio when a
> singing arc was mentioned. I dont know if this was a high
> frequency arc used to make a radio reciever make a certain
> auditory frequency or whether the arc itself could emit
> musical tones.
>
> Would appreciate any info on this "singing arc" referance.
> Sincerly, H. Norris - email mnorris@akron.infi.net
> --
> Jerry Wayne Decker / jdecker@keelynet.com
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