[TCML] Re: Discovery Mythbusters - Liquid Stun Gun using coil
Sfxneon at aol.com
Sfxneon at aol.com
Sun Sep 21 22:25:42 MDT 2008
Thanks again Greg, for the "behind the scenes" look at this MythBusters
episode in your lab. I've been hanging out on their forums for the last few days
and reading all the wacky responses to that episode, and some are just real
Speaking of wacky thoughts, how about mounting some water jets on the
topload which spray different solutions that produce different colors? It might be
really interesting if the water stream flow could be made more laminar so
that it would remain contiguous for a longer distance, or alternately, be
atomized at the surface. Who said water and electricity don't mix!
Okay, I'll give you that one for free :)
In a message dated 9/21/2008 2:58:54 P.M. Central Daylight Time,
lod at pacbell.net writes:
I was very surprised at how brightly the arc current illuminated the
water stream. There was no coloring added to the water, just salt. The
brilliant red-orange color is probably a sodium-line. I wouldn't have
predicted that the RMS current in the arc could have brought the sodium
to such intensity, let alone produce any light from the water at all.
Suppose it's largely a pulsed effect.
It was amusing that, upon viewing high-speed footage after the shoot,
the producer voiced concern over how the arc appeared as if they added
lightsabre FX to the video... All in all, they were a fun group to work
with, had good snacks and they went pretty easy on the lab area. GL
Tony Greer wrote:
> Hi Greg, all,
> I recorded that segment, and watched it several times to see just what was
> going on in the background. I figured that the salt water was what was
> the bright orange flashes between the primary turns when I saw all that
> water on the floor. Funny how the coil seemed to never skip a beat,
> Interesting how the water stream acts like a breakout point and directs
> arcs in the direction that it's pointed. The arc seems to start at the end
> the contiguous stream of water a few feet from the coil, but it looked
> the water stream itself was also illuminated a bright red or orange
> it vaporizing some of the sodium in the salt water, turning the arc red,
> was it just red colored water? Even the slo-mo video looks like the arcs
> start out red and change to blue a couple of feet from the coil.
> For those that missed it, Mythbusters was exploring the possibility of
> making a taser which used two jets of water instead of wires to deliver
> charge. They started out by powering it with a stun gun, and in true
> fashion, took it to the extreme by visiting Greg's Nevada Lightning Lab
> climbing inside the topload of his 18 foot tall TC with a big water gun.
> were directed with the water stream at a dummy 'perpetrator', which
> several strikes to hit it. Not at all practical, but an interesting
> with a big TC.
> Thanks for your reply Greg, and for allowing Mythbusters the use of your
> lab. It must have been a really fun day with Jamie and Adam around!
> Tony Greer
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