Received: from VMS.DC.LSOFT.COM (vms.dc.lsoft.com [205.186.43.2]) by locke.ccil.org (8.6.9/8.6.10) with ESMTP id OAA17293 for ; Thu, 28 Sep 1995 14:30:36 -0400 Message-Id: <199509281830.OAA17293@locke.ccil.org> Received: from PEACH.EASE.LSOFT.COM (205.186.43.4) by VMS.DC.LSOFT.COM (LSMTP for OpenVMS v0.1a) with SMTP id FE51DBA7 ; Thu, 28 Sep 1995 13:44:37 -0400 Date: Thu, 28 Sep 1995 11:03:29 -0600 Reply-To: Chris Bogart Sender: Lojban list From: Chris Bogart Subject: Re: Rotation To: John Cowan Status: OR X-From-Space-Date: Thu Sep 28 14:30:42 1995 X-From-Space-Address: LOJBAN%CUVMB.BITNET@UBVM.CC.BUFFALO.EDU >>How can one identify the north end of a symmetrical object? The head of a >>slot screw is the same is rotated by 180 degrees - the north and south ends >>cannot be discerned. > >No, I think he meant that the head of the screw would be considered the north >pole vs the point as the south pole with the axis being the long dimension >of the screw , now its rotation can be described in >relation to being with or against the rotation of the earth. Oops, I assumed "slot screw" meant some weird kind of screw where you can't tell the head from the point. If he just meant a regular screw, then you're right, my system would work fine.