Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/5/84; site mnetor.UUCP Path: utzoo!utcs!mnetor!fred From: fred@mnetor.UUCP (Fred Williams) Newsgroups: net.physics Subject: Re: Lightning Message-ID: <1366@mnetor.UUCP> Date: Thu, 18-Jul-85 09:13:43 EDT Article-I.D.: mnetor.1366 Posted: Thu Jul 18 09:13:43 1985 Date-Received: Thu, 18-Jul-85 10:32:09 EDT References: <936@teddy.UUCP> Reply-To: fred@mnetor.UUCP (Fred Williams) Distribution: net.physics Organization: Computer X (CANADA) Ltd., Toronto, Ontario, Canada Lines: 20 Summary: In article <936@teddy.UUCP> rdp@teddy.UUCP (Richard D. Pierce) writes: > >The strokes (flashes, what have you) seemed not to occur at random intervals, >but with a very definite pattern. There would be a period as long 10 seconds >during which no lightning would occur, the, as soon as one flash would occur, >many more would, at very different location. I seem to remember an article in some science magazine about lightning strokes being mapped. The method used was an array of microphones to record the thunder. Signal analysis, was then used to map the source of the noise, and the pattern of the lightning stroke could be clearly shown. The results, as I recollect, were that we generally only see a small portion of the discharge. A single discharge can span many miles hidden from the ground by cloud. I suspect that the many flashes you saw could really be different parts of the same stroke. I cannot of coarse be sure. I wasn't there. Cheers, Fred Williams