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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Worsley's Epitome
    From: Lars Bergman
    Date: 2017 Feb 10, 08:04 -0800

    Robin, you wrote "I don't know what actually done to compute the tables but whether a 5-figure table gives 8.87661 or 8.87662 may depend on the exact method used". 

    Yes, that is true. However, I have checked a few 5-figure tables:

    Roswall (1824), Bowditch (1851), Pettersson (1861), Lindman (1924); they all gives 8.87661.

    So if we can find a 5-figure table showing log cos 85°41' = 8.87662 then we have a good indicator of which table Worsley might have used. If not, then we have an indication that he used a 6-figure table.

    Lars

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    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