Recent content by Llewlyn

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    Which UK universities offer the best physics programs and support for students?

    Hi jetwaterluffy, I guess that much can be said once you tell us which area of physics interests you. Usually the answers of your questions depend upon the group and not upon the university. Ll.
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    How universities make money through research

    Hi there, I am interested in understanding how the money process works for an University. I guess that the main income comes from student fees (I am referring to private-or-almost ones), then why would an university do research? I can figure out a naive mechanism: research brings...
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    Schools Are universities reducing the number of Physics PhD students they take on?

    Have a look at these: http://www.nature.com/news/2011/110420/full/472276a.html http://www.nature.com/news/specials/phdfuture/index.html http://www.nature.com/nature/journal/v472/n7343/full/472259b.html Ll.
  4. L

    Is It Too Late to Pursue a Career in Physics at 24?

    Go through it! You're financially alright. Where's the problem? Ll.
  5. L

    PhD while having a job in academia.

    Yes, I know a professor of Biology in a British university who decided to get another PhD about complex system in another country. Whether for sake of knowledge or not, he did. Ll.
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    Definition of thermal equilibrium?

    Two bodies are in thermal equilibrium if they have the same temperature and if that isn't going to change. Ll.
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    Has Statistical Mechanics Produced Any Results on Self-Organization?

    Self-organization does not require any adaptation/addition of the fundamental laws. It's surprising that only few features in the dynamic are needed to self-organize a system, but there's nothing against thermodynamics (or any microscopical laws). Remember that we are speaking about...
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    Has Statistical Mechanics Produced Any Results on Self-Organization?

    What do you mean by self-organization? Is the gas at equilibrium? Put aside self-organization for a while and let try to change the question. Think about a classical gas, it's indeed a thermodynamic system. Since thermodynamic holds, it has an irreversible dynamic which eventually relaxes...
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    Differentials in the context of thermodynamics

    To solve the simple exercise of the "free expansion" you shall consider (Hp: ideal gas): -> p, V and T are related by ideal gas law -> No energy exchange happens during the expansion -> Energy depends only on temperature These arguments put a constraint on the final state which allow you...
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    Has Statistical Mechanics Produced Any Results on Self-Organization?

    You don't need a statmech description because it often suffices the macroscopical trend. Just to say an example, go to the homepage of Michael Cross and you'll see a demonstration of the Swift-Hohenberg equation, a PDE you may think as an averaged statmech model...
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    Analytical Mechanics: An Introduction

    The Fasano-Marmi was my textbook during undergraduate studies -- I covered almost the whole book in two courses. To me it definitely doesn't seem a book for rookies: the part on hamiltonian dynamic is rather abstract though I enjoyed much the exposition. I eventually recommend for a course in...
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    Physics How do you theoretical physicists stay motivated?

    I am used to the same coping mechanisms of Norman. Ll.
  13. L

    Simultaneous diagonalisation of non-hermitian operator (Bloch theorem)

    Thanks for the reply, I've followed your calculation. However, it seems you have assumed non degeneration of the eigenvectors basis, don't you? Degeneration makes the sim diagonalisation tricky, this is precisely why I would run into a math-statement. Ll.
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