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: Definition Drift, WAS: Bowditch 1995 Table 18
    From: Bill B
    Date: 2005 Feb 3, 16:55 -0500

    > Agreed.  I spent a fair bit of time searching for some meaning of the word,
    > "sensible" and how that could have become attached to the concept of
    > "sensible horizon", which is not at all sensible to the neophyte, in any
    > sense of the word that I can discover.
    Not sure it is "sensible" to the expert either unless a representation is
    made into a drawing;-)  Love those low-heat-to-light debates.  Is the
    celestial horizon real?  Many will argue, "Yes, of course."  I reply, "Show
    it to me.  It does not exist until sentient beings conceive it and name it.
    It is just a concept." Which is why I so love the word "conceptual."  As in
    "a conceptual line."
    It would handy if the celestial horizon was real and sensible.  Want to know
    east or west?  Look at where it meets the horizon.  Want latitude?  Measure
    from the horizon to the highest point on the arc, and voila, colatitude.
    Curious about a body's declination?  Just measure from from the arc. 

    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