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: Geeks [slide] rule!
    From: Sean C
    Date: 2013 Mar 28, 03:53 -0700

    "No offense to Sean, but I was completely puzzled by his in-ability to see how an arcsine was performed!" -Brad

    None taken. I was just as puzzled. :)

    "The Manheim (not sure of the spelling) Slide Rule was designed by an Austrian Artillery Officer, to facilitate gunnery calculations. I guess that they would still serve for such purposes." -Alan

    Funny you should mention that. I was just telling my girlfriend that I imagine artillery crews would probably make decent navigators. After all, they should already be familiar with all of the trig involved. In fact, I'd bet the calculations they perform are even more complex, considering they have to account for wind, elevation, the momentum of the projectile, etc. (And maybe more precise since they use mils instead of degrees.) That is...unless they use pre-calculated tables. IDK.

    "The beauty of the slide rule is that precision is related to length. Hence the Bygrave can solve the celestial triangle to an arc-minute." -Brad

    Ahh, that explains why he didn't just use a regular slide rule. BTW, there is a very neat slide rule simulator which is free to download called "Griffenfly". It's unique in that you can zoom in to the scales to achieve much greater accuracy than what is possible with an actual rule. Of course, you just have to make yourself 'forget' that you're doing all of this on the very machine that made the slide rule obsolete in the first place. :)

    -Sean C.
    ----------------------------------------------------------------
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com
    ----------------------------------------------------------------

       
    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