Notices
Results 1 to 10 of 10
Like Tree1Likes
  • 1 Post By MeteorWayne

Thread: Northern lights

  1. #1 Northern lights 
    Forum Freshman
    Join Date
    Jul 2012
    Location
    Erode, India
    Posts
    14
    What are Northern Lights?
    How are they formed?
    What about their sounds?
    Please provide photos of Northern Lights.
    THANK YOU.
    HAVE A NICE TIME.


    Reply With Quote  
     

  2.  
     

  3. #2  
    Ascended Member Ascended's Avatar
    Join Date
    Apr 2012
    Location
    Norfolk
    Posts
    3,411
    The northern lights are formed by the effect of the Earth's electromagnetic field deflecting cosmic radiation and other particles coming off the sun.
    Because of the way the Earth's electromagnetic field is formed the shape of it makes it possible that you get the Northern lights visible in the far north of the arctic circle as this is where the electromagnetic field comes much closer to the earth. You also get the Southern ligths for the same reason because the electromagnetic field also comes quite close to the south pole.


    Everything has its beauty, but not everyone sees it. - confucius
    Reply With Quote  
     

  4. #3  
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,416
    Those at high latitudes might be a good show tonight and tomorrow from a very large flare heading our way.
    Meteorologist/Naturalist & Retired Soldier
    “The Holy Land is everywhere” Black Elk
    Reply With Quote  
     

  5. #4  
    Comet Dust Collector Moderator
    Join Date
    Mar 2011
    Location
    New Jersey, USA
    Posts
    2,848
    The light itself comes from charged particles impacting the molecules in the air, which then reradiate the energy at specific wavelengths (colors) Similar to the way neon lights work.

    For lots of northern light images, see here:

    http://www.spaceweather.com/

    BTW, it's not necessarily just high latitudes. A big storm can create aurora (the technical name) as far south as the US-Mexican border, though they are rare.
    Ascended likes this.
    Reply With Quote  
     

  6. #5  
    Ascended Member Ascended's Avatar
    Join Date
    Apr 2012
    Location
    Norfolk
    Posts
    3,411
    Is St. Elmos's fire a similar phenomenon?
    Everything has its beauty, but not everyone sees it. - confucius
    Reply With Quote  
     

  7. #6  
    Comet Dust Collector Moderator
    Join Date
    Mar 2011
    Location
    New Jersey, USA
    Posts
    2,848
    Not really; that's more closely related to lightning, though in both cases the light come from the enegy pumped in.
    Reply With Quote  
     

  8. #7  
    Ascended Member Ascended's Avatar
    Join Date
    Apr 2012
    Location
    Norfolk
    Posts
    3,411
    No I just thought the way you explained the northern lights, which I thought was very good btw, it sounded similar to the charged particles and ionization of the air molecules description of St. Elmos's fire.

    Like for instance particles already inside the earth's electromagnetic field reacting with another electric field within the air.
    Everything has its beauty, but not everyone sees it. - confucius
    Reply With Quote  
     

  9. #8  
    Comet Dust Collector Moderator
    Join Date
    Mar 2011
    Location
    New Jersey, USA
    Posts
    2,848
    No, it's not reacting with another field in the air. The high velocity particles are hitting air molecules.
    Reply With Quote  
     

  10. #9  
    Forum Ph.D.
    Join Date
    Jul 2011
    Posts
    984
    Quote Originally Posted by kvskvt View Post
    What are Northern Lights?
    How are they formed?
    What about their sounds?
    Please provide photos of Northern Lights.
    THANK YOU.
    HAVE A NICE TIME.
    There are no sounds associated with the Northern Lights. It is a completely silent phenomenon. If you have seen movies of the northern lights where there was sound, it was added as part of the cinematic process to enhance the "mood".
    Reply With Quote  
     

  11. #10  
    Forum Junior
    Join Date
    Mar 2008
    Posts
    267
    Reply With Quote  
     

Similar Threads

  1. Global warming: new opportunities for the Northern Sea Route
    By redhaven in forum Business & Economics
    Replies: 30
    Last Post: February 7th, 2012, 10:41 AM
  2. Russia, Northern Asia and Europe, following a latitude
    By Golkarian in forum Earth Sciences
    Replies: 6
    Last Post: September 26th, 2009, 11:06 AM
  3. Northern Blots
    By thor310 in forum Biology
    Replies: 8
    Last Post: February 20th, 2009, 09:06 PM
  4. Northern Rock-Branson's biggest blunder?
    By Quantime in forum Business & Economics
    Replies: 6
    Last Post: February 29th, 2008, 05:27 PM
  5. Comet visible in northern skies to naked eye
    By in forum Astronomy & Cosmology
    Replies: 0
    Last Post: November 8th, 2007, 03:53 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •