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4hv.org :: Forums :: High Voltage
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60 meter exploding wire arc created in NZ

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Bert
Wed Nov 09 2011, 05:56PM Print
Bert Registered Member #118 Joined: Fri Feb 10 2006, 05:35AM
Location: Woodridge, Illinois, USA
Posts: 72
A friend just forwarded an article from Physorg: http://www.physorg.com/news/2011-11-extra-long-electrical-arcs-energy.html

Don't know the specifics re: peak voltage and current, but it must have made one HECK of a bang. Even short exploding wires are deafening - you feel the shock wave in your gut.

Bert
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Xray
Wed Nov 09 2011, 07:27PM
Xray Registered Member #3429 Joined: Sun Nov 21 2010, 02:04AM
Location: Minnesota, USA
Posts: 288
Yeah, I've experimented with exploding wires about a year ago. My power supply charged a 100uf energy storage capacitor to 4KV, and then discharged it through a triggered spark gap into a 30awg copper wire about 1 inch (25mm) long. As you stated, the exploding wire makes as much noise as a gun shot. One thing that I found while experimenting with various lengths and thicknesses of wire, is that when the wire is fairly long, then it no longer explodes, but rather just glows red or white hot and then melts. In order for there to be an explosion, the wire must be short enough so that it vaporizes quickly while there is still a lot of energy in the cap to create a plasma arc. I can only imagine how much voltage and current that's requred to vaporize the long wire in that article. It must be HUGE, and the capacitor bank must be huge also!

Fun stuff!
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Kiwihvguy
Wed Nov 09 2011, 07:37PM
Kiwihvguy Registered Member #3395 Joined: Thu Nov 04 2010, 08:42AM
Location: Christchurch, New Zealand
Posts: 193
Wow! I just noticed Rowan Sinton was involved, I know him! He's helping with my 1st SSTC! Gosh, it's a small world...
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Electra
Wed Nov 09 2011, 11:25PM
Electra Registered Member #816 Joined: Sun Jun 03 2007, 07:29PM
Location:
Posts: 156
Yep that’s an impressive way to get rid of some copper wire, couldn’t help thinking if they fed it in the centre as there’s a support near the trailer with the equipment on, so was it formed by two plasma arcs end to end, or a bi-polar source? The voltage must still have been pretty significant, maybe huge pulsed power caps discharged in series like a marx type arrangement do you think?
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H8erade
Sun Nov 13 2011, 11:32PM
H8erade Registered Member #3451 Joined: Sun Nov 28 2010, 11:13PM
Location: United States
Posts: 100
That is an impressive display. Does anybody know how much power went into the wire?
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GrantX
Tue Nov 15 2011, 04:49AM
GrantX Registered Member #4074 Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335
:D Awesome.

They should get the US navy's 32MJ railgun bank and wind up a 200m long loosely-wound coil.

That'd be some serious shit. The magnetic field inside the coil would almost be like a Z Pinch. Imagine the sound if they detonated it in open air.

*Drool*
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Sulaiman
Tue Nov 15 2011, 06:08AM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
interresting, but I like the scheme of firing small rockets (with or without a trailing wire)
into thunder clouds ... real lightning on demand.
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Conundrum
Tue Nov 15 2011, 10:26AM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Or use an array of tuned IR lasers with the pulses triggered so they fire within a few nsec.
Result ought to be a line of plasma fireballs (air breakdown) and a very rapid lightning strike shortly after.

-A
(applies for patent "Method of immobilising enemy tanks and artillery using induced lightning strike via laser plasma" )
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Steve Conner
Tue Nov 15 2011, 10:52AM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Applies for patent: "Method of defeating Conundrum's ridiculous weapon system by not attacking during a thunderstorm" (no text)

smile
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Tetris
Wed Nov 16 2011, 09:17PM
Tetris Registered Member #4016 Joined: Thu Jul 21 2011, 01:52AM
Location: Gainesville, FL
Posts: 660
That's an epic win. 1.2 miles? That's quite literally like lightning. The most I can do with lightning in my backyard is... watch it from my back yard. :O
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