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Forums
4hv.org :: Forums :: General Science and Electronics
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Ball shaped and lightning, just don't call it ....

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Tesladownunder
Sat Sept 29 2007, 04:23PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
An interesting photo I took today.

TDU


1191082988 10 FT0 Teslara18fttrialsegment1000
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Dalus
Sat Sept 29 2007, 04:31PM
Dalus Registered Member #639 Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512
two rotating electrodes?
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uzzors2k
Sat Sept 29 2007, 05:03PM
uzzors2k Registered Member #95 Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Awesome picture. It looks like you used a length of thin wire, split in the middle and tied together with non-conductive wire. How you got the sparks to spread I don't know.
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Carbon_Rod
Sat Sept 29 2007, 06:39PM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
TDU,
Thats a nice photo... long shutter speed I assume?


and thank you for not mentioning the b-word...
here is some hv water tricks that you may like to see:

Link2

hints at the possibility of liquid leaders...
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Tesladownunder
Sat Sept 29 2007, 06:57PM
Tesladownunder Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Uzzors wrote ...

It looks like you used a length of thin wire, split in the middle and tied together with non-conductive wire. How you got the sparks to spread I don't know.

Correct. I used 2 or 3 feet of heavy nylon fishing line between copper wires connecting the toroid to the basketball hoop. Exposure was 5 seconds. The sparks were fairly heavy power arcs and would tend to rise. I was surprised when I saw the photo which was a quick last one and rather late at night. It does open up a lot of other possibilities photographically though.

TDU
PEter
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