Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: 7 ways to determine longitude
    From: Frank Reed CT
    Date: 2003 Dec 24, 18:06 EST
    "Just to nitpick, method 1 [by chronometers], and, later, method 3 [electric telegraph] (substituting radio for telegraph), also are used at sea."

    Same name for the technique, yes, but if you were to read Chauvenet on chronometers, you would get an account of the methods that astronomers and surveyors would apply --not practical navigators at sea. Also, almost everything in the section on the electric telegraph becomes irrelevant for a navigator at sea as soon as you're dealing with signals that propagate at c (radio signals). It's all still interesting reading of course.

    Frank E. Reed
    [X] Mystic, Connecticut
    [ ] Chicago, Illinois
       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting Code:

    Custom Index

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