Slashdot Mirror


"Overwhelming" Evidence For Magnetic Monopoles

Thorfinn.au sends along big physics news: magnetic monopoles have been detected at low temperatures in "Dirac strings" within a single crystal of Dysprosium Titanate. Two papers are being published today in the journal Science and two more on arXiv.org, as yet unpublished, provide further evidence. "Theoretical work had shown that monopoles probably exist, and they have been measured indirectly. But the Science papers are the first direct experiments to record the monopole's effects on the spin-ice material. The papers use neutrons to detect atoms in the crystal aligned into long daisy chains. These daisy chains tie each north and south monopole together. Known as 'Dirac strings,' the chains, as well as the existence of monopoles, were predicted in the 1930s by the British theoretical physicist Paul Dirac. Heat measurements in one paper also support the monopole argument. The two, as yet unpublished, papers on arXiv add to the evidence. The first provides additional observations, and the second uses a new technique to determine the magnetic charge of each monopole to be 4.6x10-13 joules per tesla metre. All together, the evidence for magnetic monopoles 'is now overwhelming,' says Steve Bramwell, a materials scientist at University College London and author on one of the Science papers and one of the arXiv papers."

8 of 256 comments (clear)

  1. Re:Missing Link by impaledsunset · · Score: 0, Offtopic

    Forgetting to put the href in the link to the most important physics news in the century is like forgetting to put your weenie in the most beautiful^W^Wonly girl that shared her company with you.

  2. Holy Crap! by Javarufus · · Score: 0, Offtopic

    Wait, how will this affect me tonight when I roll a big fatty and watch TV?

  3. But does it... by argent · · Score: 0, Offtopic

    ... run Linux?

  4. Miss Monopole... by PinchDuck · · Score: 0, Offtopic

    Wasn't she the secretary that James Bond always flirted with?

  5. Practical applications? by mdomb529 · · Score: 0, Offtopic

    Uhh, how about providing the theoretical groundwork not only for being able to reverse the polarity of the phase inducers (which is the answer to most of life's problems), but also for being able to reverse the polarity of the main deflector dish to fire a tachyon pulse? Generally speaking, it allows you to reverse polarity on things, thereby providing an extremely simple and elegant solution that somehow was never conceived before.

  6. What's that word? by multipartmixed · · Score: 0, Offtopic

    Well, sir, there's nothing on earth
    Like a genuine,
    Bona fide,
    Crystalized,
    Nano-sized,
    Monopole!!

    --

    Do daemons dream of electric sleep()?
  7. Monopole by sexconker · · Score: 0, Offtopic

    Impossible magnet
    On selfish pole
    Burma Shave

  8. Oooh, magnetic monopoles! by nightfire-unique · · Score: 0, Offtopic

    Exotics are always the best way to finance those hellbore cannons. Will will bring the Ur-Quan to their knee equivalents, yet!

    --
    A government is a body of people notably ungoverned - AC