Article View: sci.misc
Article #736Re: Lightning, Up or Down?
From: Bob Dew
Date: Tue, 01 Mar 1988 20:44
Date: Tue, 01 Mar 1988 20:44
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Several years ago, I attended a graduate seminar in
electrical engineering devoted to the subject of lightning.
Two types of lightning, positive and negative (or down & up),
were identified that occur in common electrical thunder storms.
The type of atomoshpere-to-ground lightning that strikes depends upon
whether the atmosphere is positively or negatively charged
with respect to the target. Both positive and negative lightning
can be observed in a typical thunder storm, but positive
lightning is observed about 100 times more frequently.
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!lll-tis!ames!umd5!cvl!elsie!nih-csl!bob From: bob@nih-csl.UUCP (Bob Dew) Newsgroups: sci.misc Subject: Re: Lightning, Up or Down? Message-ID: <312@nih-csl.UUCP> Date: 1 Mar 88 20:44:04 GMT References: <64600001@mic> <1620@bgsuvax.UUCP> Organization: NIH-CSL, Bethesda, MD Lines: 9