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Lightning Photographed by Superfast X-ray Camera

Posted December 28, 2010 8:46 AM

From Engadget:

You know, we could just leave you with the image above and be done here, but its backstory is almost as cool. Researchers at the Florida Institute of Technology have built a 1,500-pound X-ray camera that can shoot ten million frames a second and then pointed it at a nearby flash of lightning to try and learn more about it. How did they know where the lightning would strike? Well, in true scientific fashion, they caused it themselves! This was done by shooting rockets into thunderstorms, with attached wires directing the flow of energy down into their target zone. The imagery produced from the X-ray sensor is actually extremely low-res -- a 30-pixel hexagonal grid is all you get -- but it's enough to show that X-ray radiation is concentrated at the tip of the lightning bolt. What good that knowledge will do for the world, we don't know, but we're sure it'll provide nice fodder for the next round of superhero empowerment stories.

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Re: Lightning Photographed by Superfast X-ray Camera

12/28/2010 10:42 AM

If that camera is actually 10Mframes per second, then we should be able to see the propagation of light in as short as 30 meter spans ! that's amazing (low-res though).

I think the picture that "illustrates" the effect, has much more resolution than the mentioned 30 pixels by side.

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#2

Re: Lightning Photographed by Superfast X-ray Camera

12/28/2010 11:57 AM

This type of lightning research (rocket-triggered lightning strikes) was pioneered at the University of Florida (which is not the same institution as FIU). UF has been doing this since 1993. The photo that accompanies the article looks A LOT like the photo on the main page of the UF Lightning Research Lab website:

http://www.lightning.ece.ufl.edu/

Just want to make sure some of the credit is given where some of it is due.

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