Baths and Quarks

By Sean Carroll | March 26, 2012 11:20 am

David Tong, a theoretical physicist at Cambridge, is excited about solitons. And he wants to share that excitement with you, and he’s willing to climb in a bathtub to do it.

It’s a fun video, produced by the Institute of Physics. David’s interest is really in the issue of quark confinement in QCD, one of the Clay Millenium Prize problems. But we get there by thinking about bubbles and vortices and smoke rings. Worth a look.

  • James

    Great lecturer and science communicator, is David Tong. His lecture notes are always worth a study:

    Missing a minus sign in that QCD action, though…

  • Joseph Smidt

    I want to echo #1 above. David Tong’s lecture notes are second to none! (Especially his string theory lecture notes. They’re like everything important from Polchinksi Vol. 1 except very easy to read and follow.)

  • Pingback: El cañón de vórtices, un experimento fácil de ejecutar y siempre espectacular « Francis (th)E mule Science's News()

  • Albert Einstein

    “Us” physicists?

    Us Tareyton smokers would rather compute than switch.

  • Millie Hills

    Plus, what’s with all the errors in pi at the bottom of the big chalkboard?

  • Chris

    But if you smack a proton hard enough the quark does leave, only it makes a little friend to keep it company. He seemed to be implying it’s impossible to ever remove a quark.

  • Georg

    Maybe quarks do not really “exist” at all?
    Just a formal description working well
    to describe the deep nucleon interaction?
    1/3 elementary charge is very suspicious!
    Do electrons “exist” within an atom, or are they “created”
    when I ionize an atom? This question is borderline
    for electrons, but maybe the analogon is closer
    to truth for quarks.

  • Pingback: El cañón de vórtices, un experimento fácil de ejecutar y siempre espectacular « FísicaCabreraRegional Blog()


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About Sean Carroll

Sean Carroll is a Senior Research Associate in the Department of Physics at the California Institute of Technology. His research interests include theoretical aspects of cosmology, field theory, and gravitation. His most recent book is The Particle at the End of the Universe, about the Large Hadron Collider and the search for the Higgs boson. Here are some of his favorite blog posts, home page, and email: carroll [at] .


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