Physicists Track and Trap the Elusive Neutrino

(quantamagazine.org)

34 points | by ibobev 4 hours ago

4 comments

  • mrguyorama 1 minute ago
    Wonderful pictures!

    The Super Kamiokande had a terrible engineering event where the delicate sensor bulbs shattered, and the pressure delta from one shattering caused neighbors to shatter, in a chain reaction that destroyed large amounts of sensors.

    https://www.youtube.com/watch?v=YoBFjD5tn_E

    Unrelated:

    >Neutrinos come in three different “flavors” (electron, muon, and tau) and can oscillate, or switch, between them. To do so, neutrinos must have mass

    Why? What actually is "Neutrino oscillation" and why does it require the neutrino have mass? My already feeble understanding of particle and quantum physics always breaks down at these sorts of points.

    How are we sure that the neutrino is in fact a single particle that should use the same sort of mathematical machinery as all others? Am I even asking a question that means something?

  • SiempreViernes 1 hour ago
    For anyone wondering about the title, by "trap" they mean "detect destructively": there are no stable neutrinos in a bottle in this article.
    • stouset 2 minutes ago
      That would be a wild thing to accomplish, given that neutrinos are created at relativistic speeds, have virtually zero mass, and don’t react with anything but gravity and the weak force.
    • Varelion 1 hour ago
      Damn it. Heart rate sky-rocketed from excitement.
  • semiquaver 24 minutes ago
    HN automangled the title, should have a “how” at the beginning. The change makes the headline sound like this is news, but it’s just a description of neutrino detectors.
  • ktallett 2 hours ago
    There is a good exhibit on this at the Miraikan in Odaiba, Tokyo. Detecting things and proving we detected what we detected we previously couldn't is always a fascinating exercise, especially whilst so much matter is still unrecognised.