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: Slocum's lunars
    From: Jan Kalivoda
    Date: 2003 Dec 13, 21:03 GMT

    George, sorry, but I cannot understand you:
    > In those days, tables for printing were set by hand, and there was much
    > scope for things to go wrong. I have read of other cases of printed errors,
    > and we can't reject the possibility of a whole column of them.
    If I can imagine the process of preparing the book by hand, the digits of
    table values were set one by one. Accordingly, I can understand a casual
    printing error in one digit of one logarithm, but what mental process could
    cause the error in a whole vertical column, while adjacent columns should be
    And two following paragraphs seem to be contradictory:
    > Nor can we reject the possibility that Slocum did something wrong, got a
    > silly answer, and then found a way to "fiddle" things to get a better one
    > by altering a set of numbers in a table. But Slocum would be asking for
    > trouble in doing that, because it would be so easy to check it
    > retrospectively. Publishing it in a book, which would be widely read by his
    > seagoing contemporaries, he was surely aware that the first question
    > another mariner would ask him would be "What was the table that was wrong,
    > and what were those errors?", so that they could correct their own copies.
    Therefore it would have been dangerous for Slocum to lay false claim for
    correcting a table value?
    > I agree with Herbert that his claim to have detected, and then corrected,
    > an error in a table was a remarkable feat: so remarkable as to make it hard
    > to accept.
    Or not?
    Jan Kalivoda

    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