Rocket lightning | Article about rocket lightning by The Free Dictionary
rocket lightning[′räk·ət ‚līt·niŋ]
A rare form of lightning whose luminous channel seems to advance through the air with only the speed of a skyrocket.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Mr Williams, former head of geography at Abergele Grammar School and Howell's School in Denbigh, took photographs of the amazing sight - a rare spectacle often known as "blue jets" or "rocket lightning