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Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Smooth orange arc is indeed a sparkle from burning steel wool. There is no metal reinforcement grid. The tiles are perhaps 2 inches thick, laid on concrete. Perhaps that is reinforced but not with a grid pattern that is 2 feet apart.
Time for a clue. This is a power arc not some feeble streamer. Where does it start?
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
They start out arcing directly to the ground but since the rod moves it gets drawn out and when it gets too far then it extinguishes and another starts.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Correct. The arc goes directly to ground in a heavy power arc. But the spinning electrode is moving horizontally at 7 ft/sec. The ground arc is well formed it pulls an arc out from the top until it is nearly the same length again before it extinguishes and starts the process again. The power arcs are only 2-3 feet but the TC is running at 5-6 feet power. So why is the angle of the 7 so sharp? There are three competing forces. The main one is to stay in the hot ionized channel. Second is for the magnetic field effect to enlarge the angle outwards (think rail gun forces to push the arc out). This is counteracted by the electric fields encouraging the spark to take the shortest path. It really is quite dramatic in action zap-stretch, zap-stretch. Here is a full rotation which takes place in 7 seconds, perhaps 12 foot radius. It gives a whole march of about 40 "sevens"
Registered Member #567
Joined: Tue Mar 06 2007, 10:55AM
Location: Singapore
Posts: 147
Whoo! If I didn't know that that took place over time, I'd duplicate the system and sell it as the ultimate anti-intruder system! (I mean seriously. What would your sectetary think? [i])
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Yep, videos and lots of photos of things like the "Eye of Sauron" and "Tesla car thief protection". About 1/2 million have seen these on the net. Check out my site if you are interested.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Sadly, no video of this effect. There were two video crew with pro gear, one for me and the other for the Discovery Channel but they had to finish just before I did this. Sadly my home vid was left on and was flat. As my other son had to go, it was just me and my wife. I get a bit nervous in that situation as no phone contact out there if there were problems. I will put up a separate thread about the night.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Well what about this one? Taken of 4 inch sparks from my ignition coil setup. I have a string of ceramic caps across it to brighten the sparks. No Photoshopping of course. What gases are involved?
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Mystery Photos from TDU
