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4hv.org :: Forums :: General Chatting
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Super slo-mo lightning

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Wirenut
Thu Aug 07 2008, 06:19AM Print
Wirenut Registered Member #141 Joined: Sat Feb 11 2006, 01:14PM
Location: Southern California
Posts: 96
Link2
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Dr. Dark Current
Thu Aug 07 2008, 07:58AM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
wow, that looks like discharging a Lichtenberg figure...
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Dr. SSTC
Thu Aug 07 2008, 08:13AM
Dr. SSTC Registered Member #1407 Joined: Fri Mar 21 2008, 07:09AM
Location:
Posts: 222
I love high voltage :)
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Coronafix
Thu Aug 07 2008, 10:28AM
Coronafix Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
Dr. Kilovolt wrote ...

wow, that looks like discharging a Lichtenberg figure...
That's just what I thought when I saw it. Incredible.
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Shaun
Thu Aug 07 2008, 10:43AM
Shaun Registered Member #690 Joined: Tue May 08 2007, 03:47AM
Location: New Jersey, USA
Posts: 616
Wow, you can really see how lightning starts from the sky (in the form of leaders), then the first one to contact the earth conducts the huge return stroke from ground.

Any idea what FPS the camera would have been using to capture this?
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Myke
Thu Aug 07 2008, 06:25PM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
Wee fractals. Everyone loves fractals wink
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Hon1nbo
Thu Aug 07 2008, 07:20PM
Hon1nbo Registered Member #902 Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
awesome... I always thought that those camera were too sensitive to electric fields for use on lightning (at least at those speeds).
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reign
Thu Aug 07 2008, 11:56PM
reign Registered Member #260 Joined: Sun Feb 26 2006, 09:51PM
Location:
Posts: 17
It looks as though the camera is pretty far away.

The video is stunning. Good find!

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Dave Marshall
Fri Aug 08 2008, 12:12PM
Dave Marshall Registered Member #16 Joined: Thu Feb 02 2006, 02:22PM
Location: New Wilmington, PA
Posts: 554
Very cool indeed. This camera would certainly have to be shooting many thousands of frames per second to capture it with that kind of clarity.

Lightning doesn't always exclusively move from sky to ground. Visible ground leaders (or streamers) can precede a positive stroke, which are typically more powerful than your average negative stroke. I've personally caught atleast two positive leaders on film, one of them alarmingly close (didn't know it till later). Basically in that case, first streamer to the cloud base wins.

Here's some great reading.

Dave
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Mates
Fri Aug 08 2008, 02:36PM
Mates Registered Member #1025 Joined: Sun Sept 23 2007, 07:53PM
Location: Czech Rep.
Posts: 566
I’ve always wanted to know what happens in following theoretical situation: Check the screenshot I prepared from that amazing movie and tell me somebody what happens exactly in this situation when the ground suddenly disappears…
1218206141 1025 FT51639 Lightning
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