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'[OT]: Dr. Megavolt'
2000\08\14@094726 by Jinx

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Followers of the recent thread on simulating lightning strikes and
Wimshurst machines will find this interesting. I saw him recently on
"You Asked For It". Not how I'd care to spend my day but "chacun
a son gout"

http://www.drmegavolt.com/

Montana could do with a few dozen guys like him to keep the
strikes away from the trees

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2000\08\14@104727 by Michael Rigby-Jones

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Hmm...I note that the web site make several references to "Hero", "Bravery"
and "Courage".  Not to be confused with "idiot", "stupid" and "lunacy".

It certainly looks impressive (as would any tesla coil taking 100Amps at
220V) but I can't help but feel this guy is a very likely candidate for the
2000 Darwin awards.

Mike

> {Original Message removed}

2000\08\14@140035 by W. K. Brown

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I thought the current went over the surface of the body.
(I remember this a seminar by the coroner of Dade County, Fl)
This is why most 'direct' lightning strike victims have their clothes blown
off or ripped off .

The few mA it takes to stop the heart may or not be the killer.
The total disruption of the nervous system seems to be the real culprit.

'Don't golf in a storm of any kind 'period'.

Keith

       {Original Message removed}

2000\08\14@141534 by Dan Michaels

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Keith  wrote:
>I thought the current went over the surface of the body.
>(I remember this a seminar by the coroner of Dade County, Fl)
>This is why most 'direct' lightning strike victims have their clothes blown
>off or ripped off .
>
>The few mA it takes to stop the heart may or not be the killer.
>The total disruption of the nervous system seems to be the real culprit.
>
>'Don't golf in a storm of any kind 'period'.
>

Well, I didn't really mean for my msg to be posted to piclist,
but I guess it's a discussion now. It is my understanding that
"most" people are killed by gnd currents spreading out from the
source of the strike, rather than by direct hits.

A direct hit if large enough, I am sure, wil blow your clothes
off, stop your heart, and disrupt your nervous system. Up to
70,000,000V, 10,000A, and strike speeds to 100,000MPH. That's
a lot of energy. Who knows where the current goes. [this is
also why it's so difficult to protect electronics from a
"direct hit"].

With spreading gnd currents, however, I think the danger is
more of the current passing thru your heart, and stopping it.
[this is also why it is more or less possible to protect
electronics systems from the "surge" currents due to a strike
in the "vicinity" - eg, a crummy little MOV being the usual "fix"].

Alice Campbell has taken courses in this stuff - ie, fried and
vaporized humans - maybe she will chime in.

best regards,
- danM

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2000\08\14@143357 by David VanHorn

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>
>Alice Campbell has taken courses in this stuff - ie, fried and
>vaporized humans - maybe she will chime in.

Where can I sign up for the course? :) Do they have labs?
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2000\08\14@143612 by acampbell

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{Quote hidden}

Well, im not really an expert,  and i dont remember the
proportions of the several ways you can be killed, but they
are all similar to ordinary high-voltage electrocution, a lot
depends on the exact circumstances.  your nervous system is
an excellent conductor, and your blood is salty enough to be
a good conductor, clothing may be a favored path if wet, less
if dry, type of shoe and so on.  I think that a person's
cross section in such a strong field gradient can generate a
high enough difference in potential to induce large currents
via you internal conduction paths...a lot of people, though,
simply explode leaving little more than a greasy
spot...ewwwwwwww.

alice

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2000\08\14@143830 by Oliver Broad

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Are they really still using mechanical interrupters to energise those coils?


----- Original Message -----
From: Jinx <spam_OUTjoecolquittTakeThisOuTspamCLEAR.NET.NZ>
To: <.....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU>
Sent: Monday, August 14, 2000 2:49 PM
Subject: [OT]: Dr. Megavolt


{Quote hidden}

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2000\08\14@201119 by Jinx

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> Hmm...I note that the web site make several references to "Hero",
> "Bravery" and "Courage".  Not to be confused with "idiot", "stupid"
> and "lunacy".
>
> Mike

I think you can be a brave idiot (gambler ?). The first time to try
something like that must be nerve-wracking, but now the suit is
proved there's really no danger, like the passing of lightning through
the metal of a plane, not the passengers. You get the feeling though
that he could be a victim of statistics one day, if that suit, which is
just AC ducting and chain-mail, ever gets a split or something drops
off mid-performance. With a PD of 2,000,000V between the two
Tesla coils it'd do more than make your hair stand on end. Chewing
aluminium foil on a filling's bad enough. Do engineers working on VHT
supplies use these suits ? If it works for Dr Megadolt, why not ?

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2000\08\15@003151 by Jinx

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> Hmm...I note that the web site make several references to "Hero",
> "Bravery" and "Courage".  Not to be confused with "idiot", "stupid"
> and "lunacy".

A disappointing quirk of fate that it was The Scarecrow who had no
brain, not The Tin Man.

Wonder if Jack Haley Snr ever felt like sticking his finger up a wall
socket

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2000\08\15@161419 by Peter L. Peres

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>mechanical interruptors to do the job

There is a wide choice of thyratrons, RF transmitter triodes, gated spark
gaps (elecrically or optically gated gas filled gaps) and mechanical
switches to 'do the job'. You can even use a magnetron and some strange
microwave impedance transformers to obtain very high voltages at RF. All
these have on thing in common afaik: no semiconductors inside ;)

The amateur's favorite afaik is a motor driven small steel gear wheel
(12-15 cm diamater and 20-30 teeth) acting as a high frequency interrupter
against a massive steel plate (which lies above it). This will arc like
mad but sustains 10-20A at 220V without serious damage for a reasonably
long time. ;)

Now, how does one make such a thing pass a FCC test.

Peter

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2000\08\15@164007 by Dale Botkin

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On Tue, 15 Aug 2000, Peter L. Peres wrote:

> The amateur's favorite afaik is a motor driven small steel gear wheel
> (12-15 cm diamater and 20-30 teeth) acting as a high frequency interrupter
> against a massive steel plate (which lies above it). This will arc like
> mad but sustains 10-20A at 220V without serious damage for a reasonably
> long time. ;)
>
> Now, how does one make such a thing pass a FCC test.

By locating it outside of the US and its territorial waters?  <grin>

Dale
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discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
               -- Isaac Asimov

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2000\08\16@040919 by Alan B. Pearce

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>Now, how does one make such a thing pass a FCC test.

Is this testing as a spark gap transmitter, or to meet interference specs??? ;-)

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