The first x-ray images of a lightning strike have been captured by a, well, lightning-fast camera, scientists say. The pictures suggest a lightning bolt carries all its x-ray radiation in its tip. (Get lightning facts.)
During recent thunderstorms in Camp Blanding, Florida, the camera's electronic shutter "froze" a lightning bolt—artificially triggered by rockets and wires—as it sped toward the ground at one-sixth the speed of light.
"Something moving this fast would go from the Earth to the moon in less than ten seconds," said Joseph Dwyer, a lightning researcher at the Florida Institute of Technology in Melbourne.
http://news.nationalgeographic.com/news/2010/12/101223-lightning-x-rays-camera-science-technology/
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