Message-Id: <m0syN4q-0000ZTC@xiron.pc.helsinki.fi>
Date:         Thu, 28 Sep 1995 09:47:02 -0700
Reply-To:     Mark A Biggar <mab@WDL.LORAL.COM>
Sender:       Lojban list <LOJBAN@CUVMB.BITNET>
From:         Mark A Biggar <mab@WDL.LORAL.COM>
Subject:      Re: Rotation
To:           Veijo Vilva <veion@XIRON.PC.HELSINKI.FI>
Content-Length: 776
Lines: 19

>From: Don Wiggins <dwiggins@bfsec.bt.co.uk>
>> carberti = x1 is the rotational North end (right hand rule) of object/axis x2
>
>> Maybe the head of the screw could be considered the obvious "pole" of
>> reference, so we could just say "ko carbergau fi le klupe" or "ko carnanygau
>> fi le klupe".
>
>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.

--
Mark Biggar
mab@wdl.loral.com