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: 1421 The year China discovered longitude
    From: Trevor Kenchington
    Date: 2004 May 9, 09:19 +0000

    Geoffrey Kolbe wrote:
    > Well, I am not a historian. I think it would interesting and fun for some
    > members of this list to think about how the ancients might have gone about
    > this and then actually try and measure their relative longitudes using
    > methods developed individually or collectively. I even think it would be
    > interesting enough to write up the endeavor for publication.
    I thought about doing that. However, my method would start by clearing
    and levelling an "observatory" some 30 metres or more across. I have
    enough land here and without light pollution to the southward but I'm
    not about to import enough fill to get it level -- nor to spend hundreds
    of man hours with a shovel doing the levelling!
    Unfortunately, scaling the whole thing down would lose the precision,
    which would make the trial a bit pointless.
    Trevor Kenchington
    Trevor J. Kenchington PhD                         Gadus{at}iStar.ca
    Gadus Associates,                                 Office(902) 889-9250
    R.R.#1, Musquodoboit Harbour,                     Fax   (902) 889-9251
    Nova Scotia  B0J 2L0, CANADA                      Home  (902) 889-3555
                         Science Serving the Fisheries

    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