## Statistical Physics, Volume 5Elementary college physics course for students majoring in science and engineering. |

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Page 37

There are two cases which may arise: (i) Ordinarily, the

of the systems are such that the average

is not the same as the average

There are two cases which may arise: (i) Ordinarily, the

**initial**energies E, and E'of the systems are such that the average

**initial**energy E = Ei/N of a molecule of Ais not the same as the average

**initial**energy E^ = E,"/N' of a molecule of A'; i.e., ...Page 127

Of course, if we focus attention on a single system of the ensemble, its

situation might be restored if we waited long enough for the occurrence of the

right kind of spontaneous fluctuation. If this fluctuation is such that the system at a

...

Of course, if we focus attention on a single system of the ensemble, its

**initial**situation might be restored if we waited long enough for the occurrence of the

right kind of spontaneous fluctuation. If this fluctuation is such that the system at a

...

Page 279

if cy is independent of T. (49) Remark: Note that the expressions (47) or (48) for

the entropy change depend properly only on the temperatures and volumes of

the

specified ...

if cy is independent of T. (49) Remark: Note that the expressions (47) or (48) for

the entropy change depend properly only on the temperatures and volumes of

the

**initial**macrostate a specified by (To, Vo) and of the final macrostate bspecified ...

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### Contents

Characteristic Features of Macroscopic Systems | 1 |

A I | 2 |

I | 6 |

Copyright | |

26 other sections not shown

### Common terms and phrases

absolute temperature absorbed accessible approximation assume atoms average Avogadro's calculate classical collision Consider constant container corresponding cules denote discussion distribution ensemble entropy equal equilibrium situation equipartition theorem example exchange energy expression external parameters fluctuations function given heat capacity heat Q heat reservoir Hence ideal gas initial internal energy interval isolated system kinetic energy large number left half liquid ln Q macroscopic parameters macroscopic system macrostate magnetic field magnetic moment magnitude mass mean energy mean number mean pressure mean value measured mechanics mole molecular momentum number of molecules occur oscillator particle particular partition phase space piston position possible values Prob quantity quantum numbers quasi-static random relation result simply solid specific heat spin system statistical statistical ensemble statistically independent Suppose thermal contact thermal interaction thermally insulated thermometer tion total energy total magnetic total number unit volume velocity