coondoggie writes "When it comes to lightning, most people see it and head for safety, choosing not to stop and discuss what type it is. But researchers say they have developed a technique that shows how diverse lightning can be. For example, most people don't see lightning see lightning strikes that go from clouds to the ground, but some lightning goes upward, forming blue jets and gigantic jets. Perhaps the most dangerous lightning appears as "bolts from the blue" — lightning that begins upward, but then moves sideways and then downward to hit the ground as much as three miles from a thunderstorm, say researchers at New Mexico Tech and Penn State. Using detailed pictures of "bolts from the blue" lightning from New Mexico Tech's Lightning Mapping Array, researchers created a three-dimensional lightning location system that uses multiple measurement stations to capture and time the VHF signal of the lightning. The Lightning Mapping Array can map lightning within clouds, something that normal optical photography or videography cannot do, researchers stated.
http://www.networkworld.com/community/node/26479" Link to Original Source
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