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: Edward J Willis
    From: David C
    Date: 2020 Nov 6, 21:52 -0800

    David wrote

    I'm coming round to the idea that Hughes were probably toying around with the PZX solver concept so they didn't miss the boat if the idea suddenly became popular with the military, big companies, and others with purchasing power.

    That idea had occurred to me. It was near the end of the hand-computed table era but before the digital era. An analogue device was the logical next step. If you look at Bowditch or the Rittenhouse article you will note that there were a large number of analogue methods in use or proposed.

    Rittenhouse quotes Willis as saying (when talking about his navigating machine)

    "Does for the navigtor what the adding machine does for the accountant."

    As an aside the marine version of Willis' machine was estimated to cost $US500. Between 1936 and 2020 pices in NZ have increased approximately 57 times. I know that the US figures will be different but as a starting point the Willis Navigating Machine would have cost approximately $US28,000 in 2020 money. What a difference digital technology and smart phones have made.

       
    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