# Thermal and Statistical Physics

## By Prof. Carlson

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#### Descripción

Thermal and Statistical Physics Purdue University Phys 416

Nombre | Descripción | Publicado | Precio | ||
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1 |
No explícitaLecture 4: Partition Function and Thermodynamic Identity | Boltzmann Factor, Partition Function and how to calculate everything else from it. Live near lakes because they have a high heat capacity. Energy and Heat Capacity of a two state system, Definition of a reversible process, Definition of pressure, The Ther | 9/9/2007 | Gratis | Ver en iTunes |

2 |
No explícitaLecture 5: Free Energy and Maxwell Relations | Helmholtz Free Energy is the right energy to use when temperature and volume are used as control variables. Free Energy and the Partition Function. Maxwell Relations -- you can derive them all. Legendre Transforms. Ideal Gas. Quantum Concentration. Why so | 9/9/2007 | Gratis | Ver en iTunes |

3 |
No explícitaLecture 6: Ideal Gas Law, Planck Blackbody Radiation | Deriving the ideal gas law. Equipartition Theorem. Entropy of Mixing. Hot things glow -- or how night vision goggles work (Planck blackbody radiation). Analyzing star spectra. Class discussions: Mixing 2 colors of Kool-Aid, and how to make heavy Kool-Aid | 9/9/2007 | Gratis | Ver en iTunes |

4 |
No explícitaLecture 2: Multiplicity Function | Why is the most probable configuration important? Multiplicity Function is a gaussian in the two-state system. Weighted averages. Introduction to partition function. Lecture 2 Audio | 9/9/2007 | Gratis | Ver en iTunes |

5 |
No explícitaFinal Review 2 | This is a final review for the last 1/4 of the course. This is a very short lecture, because we had a field trip to go see the prestigious Bagwell Lecture given by Purdue's very own Prof. Albert Overhauser of the world-famous Overhauser Effect. Lecture Au | 21/8/2007 | Gratis | Ver en iTunes |

6 |
No explícitaFinal Review 1 | This is a final review for the first 3/4 of the course. Lecture Audio | 21/8/2007 | Gratis | Ver en iTunes |

7 |
No explícitaLecture 24: Fluctuation-Dissipation Theorem | We finish two more examples of the Fluctuation-Dissipation Theorem. This is a theorem that pops up everywhere! It means that the very same microscopic processes responsible for establishing thermal equilibrium are the same microscopic processes that cause | 21/8/2007 | Gratis | Ver en iTunes |

8 |
No explícitaLecture23: Brownian Motion and Diffusion | Brownian motion was discovered by a botanist named Brown, when he looked at water under a microscope, and observed pollen grains "jiggling" about in it. Einstein eventually explained it as due to the random collisions the pollen grain experienced from the | 21/8/2007 | Gratis | Ver en iTunes |

9 |
No explícitaLecture 22: Nucleation in First Order (Abrupt) Phase Transitions | Supercooling Demonstration (thanks to special guest Prof. Ken Ritchie): Put filtered water in a plastic bottle in your freezer for, say, 4 hours. Now, carefully remove it from the freezer, and shake the bottle vigorously. We did this, and saw ice crystals | 21/8/2007 | Gratis | Ver en iTunes |

10 |
No explícitaLecture 21: Alloys, Mixing, and Phase Separation | Oil and water -- they don't mix. Or do they? Due to the entropy of mixing, any tiny amount of impurity is highly favored entropically. This means that in general, you can get a small amount of a substance to mix into another. But take that too far, and th | 21/8/2007 | Gratis | Ver en iTunes |

11 |
No explícitaLecture 20: Landau Theory of Phase Transitions; Oil, Water, and Alloys | Now that we know what order parameters are (see last lecture), we'll use the order parameter of a phase to construct the Landau free energy. The Landau free energy depends on the order parameter, and retains all the symmetries of the physical system. It's | 21/8/2007 | Gratis | Ver en iTunes |

12 |
No explícitaLecture 19: Symmetries, Order Parameters, and the Failure of Reductionism | We finish the van der Waals equation of state, and use it to illustrate the liquid-gas phase transition. It turns out that at low pressure, the van der Waals equation of state has a wiggle where (dp/pV)0. Since this would cause an explosion, the system in | 21/8/2007 | Gratis | Ver en iTunes |

13 |
No explícitaLecture 18: Van Der Waals and Geckos | We derive the shape of the phase boundary for solid to gas transitions (sublimation), examples being dry ice (CO2) or ice at low pressure. We derive the van der Waals equation of state, which is an improvement on the ideal gas equation pV=nRT. The ideal g | 21/8/2007 | Gratis | Ver en iTunes |

14 |
No explícitaLecture 17: Introduction to Phase Transitions | We finish discussing chemical reactions, including how fast they progress, and what a catalyst can do for you. Then we begin a new topic: phases of matter and phase transitions between them. You've heard of solid, liquid, and gas, but did you know about t | 20/8/2006 | Gratis | Ver en iTunes |

15 |
No explícitaLecture 16: Gibbs Free Energy and Chemical Reactions | We define the Gibbs Free Energy, which is the right energy function to use when you can control temperature, pressure, and particle number. This means chemists like it, because chemical reactions in a lab often take place under these conditions. We use th | 20/8/2006 | Gratis | Ver en iTunes |

16 |
No explícitaLecture 15: Refrigerators and Path Dependence of Work | How refrigerators work. Why you can't cool your apartment by leaving the refrigerator door open. How heat and work depend on which path is taken. How to do completely meaningless work, the kind that's turned entirely into heat. We prove why the free energ | 20/8/2006 | Gratis | Ver en iTunes |

17 |
No explícitaMidterm Review | We're having a midterm exam Wednesday, and today is a review of everything in chapters 1-7 in the text, Kittel and Kroemer's Thermal Physics. Topics include: Fundamental assumption of statistical mechanics, Laws of Thermodynamics, Probabilities and the Pa | 20/8/2006 | Gratis | Ver en iTunes |

18 |
No explícitaLecture 14: Engines | Storytime with Thursday Next (Jasper Fforde), and her Uncle Mycroft's entropy-detecting entroposcope. Why are large-scale systems capable of producing irreversible processes (like glass breaking, or red and blue Kool-aid mixing), even though the microscop | 20/8/2006 | Gratis | Ver en iTunes |

19 |
No explícitaLecture 13: Bose Condensates | More about Bose condensates. They're really weird -- at the lowest temperature, all bosons flock to the lowest available state, producing a "Bose condensate". Due to quantum mechanics, this is a remarkably stable state of matter, and is very hard to distu | 20/8/2006 | Gratis | Ver en iTunes |

20 |
No explícitaLecture 12: Reversible and Irreversible Expansions | Now that we've derived absolutely everything about the ideal gas from scratch, it's time to do something useful with it! We'd like to eventually learn how to use this stuff to build engines and refrigerators. Today we discuss the basic processes (reversib | 20/8/2006 | Gratis | Ver en iTunes |

21 |
No explícitaLecture 11: Bose Gas and Ideal Gas | Review of Fermions and Bosons. Review of Fermi Gas. All about the Bose gas, and its ditsrubution function. In the classical limit, the Fermi-Dirac distribution function and the Bose-Einstein distribution function approach the same form, and we recover ide | 20/8/2006 | Gratis | Ver en iTunes |

22 |
No explícitaLecture 10: Fermi-Dirac Distribution Function | Why no two pieces of matter may occupy the same space at the same time. Fermions are antisocial; bosons are social. Bosonic examples: lasers and superfluid helium. All about Fermions. Fermions obey the Pauli exclusion principle, and each state may have ei | 20/8/2006 | Gratis | Ver en iTunes |

23 |
No explícitaLecture 9: Gibbs Factor and Gibbs Sum | When the system and reservoir can trade particles, you can't use the Boltzmann factor and the partition function anymore. Instead, use the Gibbs factor, and the grand partition function (or Gibbs sum). We introduce these new things, and then apply them to | 20/8/2006 | Gratis | Ver en iTunes |

24 |
No explícitaLecture 8: Chemical Potential | Introducing a new thermodynamically conjugate pair of variables: number of particles and chemical potential. Internal and external chemical potential. Voltmeters measure the total chemical potential. Great class brainstorm on internal voltages in your lif | 20/8/2006 | Gratis | Ver en iTunes |

25 |
No explícitaLecture 7: Planck Blackbody Radiation | Deriving Planck's law of blackbody radiation. How to use it to tell the temperature of a star. Discussions about stars -- absorption lines and redshifts, and how to get the temperature correct anyway. Student demo of astronomy course software -- very cool | 20/8/2006 | Gratis | Ver en iTunes |

26 |
No explícitaLecture 3: Entropy, Temperature, and the Laws of Thermodynamics | Fundamental assumption of statistical mechanics: all accessible states are equally likely. Ensemble averages are weighted averages. Two systems in thermal contact. How to define entropy and temperature. How to take partial derivatives. The laws of thermod | 20/8/2006 | Gratis | Ver en iTunes |

27 |
No explícitaLecture 1: What is Statistical Mechanics and Why Does It Work? | Lightning fast review of quantum mechanics. Stationary quantum states, accessible states, fundamental assumptions of statistical mechanics. How to get from the microscopic quantum level to the macroscopic behavior you observe. We visualized atomic orbital | 20/8/2006 | Gratis | Ver en iTunes |

27 artículos |

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