Posted on 03/11/2012 7:06:12 PM PDT by BenLurkin
I’m thinking arc welding.
SPRITE?
http://elf.gi.alaska.edu/sprites.html
A movie of a sprite is available (157K mpeg).
Early research reports for these events referred to them by a variety of names, including “upward lightning,” “upward discharges,” “cloud-to-stratosphere discharges,” and “cloud-to-ionosphere discharges.” Now they are simply referred to as sprites, a whimsical term that evokes a sense of their fleeting nature, while at the same time remaining nonjudgemental about physical processes that have yet to be determined.
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