"Dark Lightning" Energy Burst Detected, Linked To Visible Lightning
29 replies, posted
[img]http://images.sciencedaily.com/2013/04/130424210319-large.jpg?1366852133[/img]
[quote][i]Three images, left to right, of the same thundercloud depict a less-than-10-milliseconds-long sequence of events: (left) formation within the cloud of a small channel, or ‘leader,’ of electrical conductivity (yellow line) with weak emission of radio signals (ripples), to (middle) a burst of both dark lightning (pink) and radio waves (larger ripples), to (right) a discharge of bright lightning and more radio waves. (Credit: Studio Gohde)[/i][/quote]
[quote]Researchers have identified a burst of high-energy radiation known as 'dark lightning" immediately preceding a flash of ordinary lightning. The new finding provides observational evidence that the two phenomena are connected, although the exact nature of the relationship between ordinary bright lightning and the dark variety is still unclear, the scientists said.[/quote]
Source: [url]http://www.sciencedaily.com/releases/2013/04/130424210319.htm[/url]
Dark Lightning sounds like the best name for a band.
Anyway, this is really cool!
Damn, it's surprising how much there's left to discover about Earth.
If I am seeing correctly... that looks like a silhouette of pikachu.
[QUOTE=Water-Marine;40414910]Damn, it's surprising how much there's left to discover about Earth.[/QUOTE]
We've barely touched the oceans.
[QUOTE=person11;40414883]Dark Lightning sounds like the best name for a band.
Anyway, this is really cool![/QUOTE]
anything with dark or death in its name sounds terrible
<---
[QUOTE=chimitos;40414934]We've barely touched the oceans.[/QUOTE]
I went swimming last week and I put my whole head under thank you very much
Took from a old thread:
[QUOTE=DrLuckyLuke;39134637][media]http://www.youtube.com/watch?v=OBOolkHVG_Q[/media][/QUOTE]
[QUOTE=Water-Marine;40414910]Damn, it's surprising how much there's left to discover about Earth.[/QUOTE]
The more we know, the less we know.
[QUOTE=areolop;40415027]The more we know, the less we know.[/QUOTE]
Sounds like the premise of LOST...
[QUOTE=The golden;40415903][media]http://www.youtube.com/watch?v=jF2gW2g5qKM[/media]
Somewhat related. Worth watching. Also Richard Hammond.[/QUOTE]
Even though they only last for like a millisecond, sprites are fucking weird.
[img]http://gpl.fit.edu/sprite.JPG[/img]
Thought all this has been known since at least the early 90s.
[QUOTE=person11;40414883]Dark Lightning sounds like the best name for a band.
Anyway, this is really cool![/QUOTE]
To me Dark Lightning sounds like a spell that a warlock would use.
Also I expected this to be related to dark energy, but radiation bursts from lightning clouds is still interesting.
[QUOTE=The golden;40415903][media]http://www.youtube.com/watch?v=jF2gW2g5qKM[/media]
Somewhat related. Worth watching. Also Richard Hammond.[/QUOTE]
"This video contains content from BBC Worldwide who has blocked it in your country on copyright grounds".
I'm in the bloody UK, wtf BBC
So how much time left before we create a Dark-Light device?
[img]http://mariopartylegacy.com/wp-content/uploads/2013/04/lmdmgemsoc4.png[/img]
Not sure if it's related, but, [URL="http://en.wikipedia.org/wiki/Upper-atmospheric_lightning"]upper-atmospheric lightning[/URL]? The pinkish burst in the OP's pictures made me think of ELVES, or "sprites" - the article does refer to the burst of pink as dark lightning, so maybe it is connected.
Here's a [URL="http://earthobservatory.nasa.gov/IOTD/view.php?id=78487"]still image taken by the ISS[/URL]
[t]http://eoimages.gsfc.nasa.gov/images/imagerecords/78000/78487/ISS031-E-10712.jpg[/t]
Here's [URL="http://www.nasa.gov/multimedia/videogallery/index.html?media_id=150386991"]more video on NASA's website.[/URL]
Really weird phenomena. The bright red color is beautiful.
I thought dark lightning was just a gamma ray burst?
someone please explain sprites
If I understand it correctly, sprites originate from the same point in a thundercloud as the thunderbolt in question. The stream of charged particles from the lightning bolt strikes not only the ground, but [I]also[/I] cascades upwards and forms visible faint red tendrils above the cloud within milliseconds of the lightning hitting the ground. I read somewhere that the red hue is due to the comparatively high nitrogen content of the upper atmosphere - diatomic nitrogen molecules glow red when excited by electric current.
Lightning is the coolest shit.
Volcanic lightning
[t]http://monscooch.files.wordpress.com/2008/05/volcano.jpg[/t]
Here's another pic of an example:
[img]http://www.popsci.com/files/imagecache/article_image_large/articles/dark-lightning.jpg[/img]
[quote][i]In this visualization of dark lightning, which is actually invisible, gamma rays are shown in pink. Highlighted in yellow are subatomic particles called positrons that the Fermi Gamma Ray Space Telescope detected from this dark lightning flash. The Earth is below and the moon appears behind the pink gamma rays. Screenshot from "ScienceCasts: Dark Lightning" by Science@NASA on YouTube[/i][/quote]
woah i didn't know about lightning sprites. those are so cool. we should harness this technology!
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