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From: gwyn@brl-tgr.ARPA (Doug Gwyn )
Newsgroups: net.physics,net.misc
Subject: Re: Those funny lines
Message-ID: <5274@brl-tgr.ARPA>
Date: Sun, 14-Oct-84 07:15:58 EDT
Article-I.D.: brl-tgr.5274
Posted: Sun Oct 14 07:15:58 1984
Date-Received: Tue, 16-Oct-84 03:28:01 EDT
References: <170@hocsj.UUCP>
Organization: Ballistics Research Lab
Lines: 1

Yes, those vertical trails are for calibration of photographs.