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
    A distinction between constant and systematic error
    From: Peter Fogg
    Date: 2007 Apr 25, 18:29 +1000

    During recent postings on this topic I failed to make a distinction
    between constant and systematic error.
    
    Some error is constant. Error in time is an example, as could be a
    consistent error in measuring or recording altitude.
    
    Other error can be systematic although its effect is not constant. An
    error in applying a measurement of temperature or air-pressure is an
    example of error that is systematic although the effect on calculated
    refraction will vary, according to altitude.
    
    Similarly, if the pivotal point of the sextant arm is not exactly
    central this will generate error according to the sine of the angle of
    rotation - again; it is systematic although not constant.
    
    --~--~---------~--~----~------------~-------~--~----~
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@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