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    Loss of motivation when research becomes 9-5 job.

    I'm 6 months into a PhD (admittedly in Chemical Engineering, not physics, but my project has a modelling bent) and, as the title suggests, I've been struggling to find motivation day in and day out. It's silly: give me an interesting problem in a project not related to my work (say a math...
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    Exercises in Statistical Mechanics

    I'm enjoying Lennard Susskind's lectures on Statistical mechanics. I've briefly studied this material before, but I've learnt a lot about more practical calculations from these lectures: he's used the partition function to derive all sorts of fun expressions, and to analyse the ideal gas and a...
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    Justification of generalisation from reversible processes to all procesess

    Hi all, I've been having some difficulty understanding the derivation of the Fundamental Theorem of Thermodynamics, dU=T \ dS-P \ dV. The derivation, which can be found at Wikipedia (http://en.wikipedia.org/wiki/Fundamental_thermodynamic_relation) first starts with the universal First Law...
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