MGP/MGP+ 2018 - Starts 18th Nov - Admissions Open.
Admissions for MGP/MGP+ 2018 are now open. Course begins from 18th Nov, 2018. Read Complete details here. To subscribe visit http://instamojo.com/ForumIAS

Magnetic dip,Magentic declination

what are the reasons for it apart from local attraction.pls enumerate friends.
1 prelims,2 mains - CSM and IFS
Psychology .

Comments

  • is local attraction included in all these or its simply computed separately in surveying?
    1 prelims,2 mains - CSM and IFS
    Psychology .
  • Both Dip and declination don't depend on local attraction.
    if u hold a compass in a vertical plane it will show some angle with the horizon, that is dip.
    Declination is just the difference in angle between true north and geographic north. ( true north is somewhere in Canada and geographic north is north pole.)
    Both dip and declination varies from one place to another.
    Local attraction is caused when a magnetic compass is affected by nearby magnetic field like iron shades, transmission towers etc. Local attraction is different for different points in a field plot and yes they are needed to be calculated and adjusted to true readings.

    But I am curious, does ur optional psychology includes surveying topics?
    "The fault, dear Brutus, is not in our stars, But in ourselves, that we are underlings."
  • thanks for ur explanation bro.

    forestry includes surveying :) .
    1 prelims,2 mains - CSM and IFS
    Psychology .
  • ok. :smile:
    "The fault, dear Brutus, is not in our stars, But in ourselves, that we are underlings."
Sign In or Join to comment.

Courses by ForumIAS for CSE
ForumIAS is trusted by over 10,000+ students for their Prelims, Mains and Interview Preparation and we currently run several assistance programs to help students from Civil Services prelims preparation to rank upgradation to IAS. You can enroll for these programs by visiting http://blog.forumias.com/courses

Welcome!

We are a secret self-moderated community for Civil Services preparation. Feel free to join, start a discussion, answer a question or just to say Thank you.

Just dont spread the word ;)

Sign in or join with Facebook or Google

Subscribe to ForumIAS Blog