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4hv.org :: Forums :: General Science and Electronics
« Previous topic | Next topic »   

Mystery Photos from TDU

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Tesladownunder
Sat Sept 01 2007, 08:30PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
 		I just held up two different filters in front of the camera at different times. I did not have a color wheel then, but I have made one up since and have used it on Tesla sparks.
Jump to the thread here in Tesla coils.
http://4hv.org/e107_plugins/forum/forum_viewtopic.php?30760.last

TDU
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Coronafix
Sun Sept 02 2007, 04:01AM
Coronafix Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
 		Yeh, but what effect are you trying to recreate from fiction?
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Tesladownunder
Sun Sept 02 2007, 04:29AM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
 		At this stage I am jealously guarding that secret.
It will take some weeks to get the effects and props arranged. It should be one of the most popular things I have done. I hope to do some further work towards it tonight.

TDU
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Tesladownunder
Wed Sept 05 2007, 12:43PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
 		How about this?

Mystery 75
1188996182 10 FT10696 Mystery75
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Ken M.
Thu Sept 06 2007, 06:54AM
Ken M. Registered Member #618 Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
 		Looks like an arc discharge from from your X ray xformer, as for the arc I think its arcing to a spinning ground perhaps.
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Tesladownunder
Thu Sept 06 2007, 01:24PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
 		The HV setup is my twin ignition coil one (driven by a MOT and Sidacs at several kV). One side is used to get 2 inch sparks.

A rotating ground is a reasonable idea but not correct.

Does this help?

Mystery 76
1189085024 10 FT10696 Mystery 76
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Munkey
Thu Sept 06 2007, 04:47PM
Munkey Registered Member #588 Joined: Sat Mar 17 2007, 11:06AM
Location: UK
Posts: 93
 		Umm... I'm gonna have a go at this. Is it moving a sparking HV (red) wire with the camera with a long exposure?
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Tesladownunder
Thu Sept 06 2007, 05:33PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
 		The red wire is in the background and is unrelated. But you are essentially right, the series of sparks are due to a wire being fed off the spool from the HV source. The wire has a 2 inch gap made from nylon fishing line which feeds out about 2 feet to an earthed wire. All this happens within a long exposure (10 seconds here).

Now imagine everything scaled up 20 times with a much more rapid spark rate. See where I am going?

TDU
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Munkey
Thu Sept 06 2007, 07:57PM
Munkey Registered Member #588 Joined: Sat Mar 17 2007, 11:06AM
Location: UK
Posts: 93
 		Hmm, I see the spool of fishing wire on top of the wooden blocks with some vacuum tube poking their heads out of the driver I would assume. My only guess left is that you are retracting the fishing line whilst it is sparking? But thats awfully close to my other guess...
Ill have a long look and try to figure out more.
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OZZY
Fri Sept 07 2007, 07:44AM
OZZY Registered Member #511 Joined: Sat Feb 10 2007, 11:36AM
Location: Somerset UK
Posts: 55
 		The heat ray from War of the worlds?
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