Lightning Reveals Its Power in Slow Motion - Wired News

This lightning, a negative stepped leader, was filmed from an airplane. A stepped leader forms a connection making a return stroke with a rapid re-brightening of the channel. A second brightening is caused by a fast, downward dart-leader. It travels ...

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Lightning Reveals Its Power in Slow Motion - Wired News
www.wired.com/thisdayintech/2010/02/gallery-lightning/3