Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Magnetic question

  1. Apr 2, 2007 #1

    pixel01

    User Avatar

    I have a question about magnetic bars. If we froze a magnetic bar down to zero Kelvin, does it still have a magnetic field?
     
    pixel01, Apr 2, 2007
  2. jcsd
    Phys.org - latest science and technology news stories on Phys.org
  3. Apr 2, 2007 #2

    Hootenanny

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Without wishing to sound rude, we cannot reach absolute zero [in a finite number of processes], so your question is moot. And as an aside the magnetic would not 'freeze'.
     
    Hootenanny, Apr 2, 2007
  4. Apr 2, 2007 #3

    pixel01

    User Avatar

    OK, we can not reach absolute zero, but we can reach as low as several K. So what does the magnetic field change when the m-bar is freezed to that low temperature? Will it increase or decrease?
     
    pixel01, Apr 2, 2007
  5. Apr 2, 2007 #4

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    Insights Author
    2016 Award

    Maybe you should consider this. How would one destroy the magnetic strength of a permanent magnet? Does one chill down to low temperatures, or does one heat it up? If you can answer this question (which, I think, is something that is covered in elementary science classes), then you have a clue in the answer to your question.

    Zz.
     
    ZapperZ, Apr 2, 2007
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Magnetic question

  1. Magnet question (Replies: 13)

  2. Magnetism question (Replies: 3)

  3. A Magnetic Question (Replies: 6)

  4. Magnetism Question (Replies: 1)

  5. Question on Magnets (Replies: 2)

Loading...