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Registered Member #65
Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
Atmospheric sprite video: "In summer 2005, researchers from Duke University, US, and collaborators from FMA Research in Fort Collins, Colorado, US, kept a watchful eye on the skies above the Great Plains from the Yucca Ridge Field Station in Fort Collins, hoping to capture sprites in action using their 7000-frames-per-second camera. And capture it they did - watch their video in Quicktime format or RealPlayer format. Previously, the best published sprite images were recorded at 1000 frames per second."( )
Registered Member #63
Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
Very beautiful... if I could play either of the nasty formats (mp4 or .rm?! *sigh*) then I'd be even more amazed.
It's the sort of thing that inspires you to get into high speed photography and makes you wish you had a camera capable of a few Kfps, AND knew how to use it =P
Registered Member #53
Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
My Van de Graff used to make "sparks" that looked very similar to those. They would come off of the, insulating, tape that held the 2 bowls of the top together. It had the appearance of those "sprites" but it was only 1 branch not 4 or 5 like in the video. They did not feel like a normal spark either; they felt more like a puff of air. I couldn't get any photos because they were very dim.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I would love to see those videos, the problem is that the size of the video files is 52 (mp4) and 137 (ram) BYTES . I'm not sure how can this contain even single frame. The photo is beautiful btw.
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
wow, very impressive!
It as also amasing what modern day compression formats can do, the file is actually 766bytes in .mov format! (attacehd as a .mov if it helps...) ]1140292347_56_FT1314_sprites.zip[/file]
Geometrically Frustrated Registered Member #6
Joined: Thu Feb 02 2006, 04:18AM
Location: Bowdoin, Maine
Posts: 373
Ahh, it's so small because it's just a seed to spawn a video stream. It works fine on my mac, but not in linux. Very cool though. This reminds me of the research that was being done where they took high speed pictures of sparks, and you could see the individual points of light moving from one electrode to the other.. Maybe I can find the link.
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Atmospheric sprite video
. I'm not sure how can this contain even single frame. The photo is beautiful btw.
