>From paulmil-at-ibm-dot-netMon Jun 3 22:20:55 1996
>Date: Mon, 3 Jun 1996 09:14:52 GMT
>From: PAUL MILLOTT <paulmil-at-ibm-dot-net>
>Subject: Re:Humid atmosphere
>>Re: Body capacitance effect on coil tuning
>> Something is badly amiss there. I can't imagine your coil
>>being that sensitive to the effect of someone nearby. A change of
>>a percent or so in resonant frequency seems reasonable, b ut not
>>much more unless your coil is enormous. I would think a person
>>15 feet away from even a four foot high coil would have an almost
>>unmeasurable effect when the coil was firing and the "
>>"Q" reduced by the spark loading.
>>Ed. I agree with you. Something is strange out here. I measured the
>resonance again and asked someone else to move from 50 ft towards the coil.
>(The coil is about 5ft 8" high). As they aproach you can see the resonance
>change dramatically on the oscilliscope. At around 15 ft away the coil no
>longer tunes in to any resonance within range. This only happens in the
>jungle atmoshere and not in town. Have you any way to imitate the high
>humidity and temperature to test this on your coil? It is 32 degrees Celsius
>and 100% humidity in the evening. The heat prevents any condensation and
>everything remains dry until dark. I have now removed the coil as I could
>find no way to make it work in these conditions but would still like to know
>what effect was preventing it from operating.
>Thanks for the reply,
>PAUL MILLOTT (Failed again)
You may have come up with a more profitable use for a Tesla coil than
making spark shows. It sounds like you have a very effective personnel
detector capable of use in heavy jungle. Have you tried asking for a
multi-million dollar government grant to study the obvious military
applications of this? If you did get big support, somehow I would
not be suprised.
That phenomenon certainly is a poser! Think of it on the bright
side. You have a coil system that requires 50 foot clearance for
Happy Coiling!, rwstephens