Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Lost people DO follow circles, says research
    From: Philip Lange
    Date: 2009 Aug 22, 06:56 -0400
    Perhaps this may be of help?

    Source: History of Tribology by Duncan Dowson

    In History of Tribology Dowson shows a picture of a Chinese cart or chariot with a wooden figure on top.  The figure was connect to a set of gears so that it always pointed in a constant direction.  This cart aided Chinese travelers crossing the Gobi desert where it was difficult to avoid becoming lost.
    Found on: http://tribologynews.wordpress.com//category/history/

    On Fri, 2009-08-21 at 20:17 -0700, James N Wilson wrote:
    This somehow reminds me of learning some years ago about an ancient
    method to maintain orientation while crossing the Gobi desert. Primitive
    bevel gears were somehow used on a cart to maintain the orientation of a
    statue on a vertical axis. As long as both wheels rotated the same
    amount, the statue pointed straight ahead. But if one rotated more than
    the other, the statue pointed in a different direction, indicating that
    the cart had turned.

    Alas, I can't find anything about this now, and my old references have
    been lost. But it is interesting, even if I can't now figure out how it
    was done. I do remember that it was ingeniously simple.

    I'm remembering a bit more. This was offered to me as the first use of
    the bevel gear principle, and it was before the internet, so what I saw
    was hard copy. I wish I had it now.

    Jim Wilson

    NavList message boards: www.fer3.com/arc
    Or post by email to: NavList@fer3.com
    To unsubscribe, email NavList-unsubscribe@fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site