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: Traditional navigation by slide rule
    From: Paul Hirose
    Date: 2016 Oct 28, 16:35 -0700

    On 2016-10-28 13:13, Bob Goethe wrote:
    >
    > I see that Excel 2013 has an LN() function available to it...but the flavor 
    of Visual Basic which I have integrated with my graphics program, CorelDraw, 
    does not support this function per se.
    
    If your Visual Basic is like mine, Log(x) returns the natural logarithm
    of x, and Log10(x) the base 10 logarithm. Log() can also be called with
    two parameters: Log(x, y) returns the base y log of x.
    
    If space for the scale is an issue, maybe the ln scale could go on the
    back of the slide. The simple "Mannheim" slide rule has one face on the
    body but the slide is double faced: B, CI, and C one side, S, L, and T
    on the other. For trigonometric or logarithmic computations, you pull
    out the slide and flip it over.
    
    Possible useful additions to your slide rule are gauge marks for minutes
    and seconds:
    
    http://fer3.com/arc/m2.aspx/Traditional-navigation-slide-rule-Hirose-sep-2016-g36680
    
    

       
    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)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site