动态平衡 S.J.T.U. Phase Transformation and Applications Page 10/66 In order to compute the macroscopic average of a property .The property of each microstate .Which microstates the system can be in .The probability that the system will be in a given microstate Macrostate: stating the total number of particles in Macroscopic each box yields pressure Microstate: each way of realizing a given macro distribution Instantaneous pressure Each macrostate may be realized by a number of microstates Time> Figure 10.2 Instantaneous gas pressure as a function of time.(The magnitude of the variation of instantaneous gas pressure is exag- gerated for emphasis.) SJTU Thermodynamics of Materials Spring2008©X.J.Jin Lecture 19 StatisticalPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Lecture 19 Statistical Page 10/66 动态平衡 In order to compute the macroscopic average of a property •The property of each microstate •Which microstates the system can be in •The probability that the system will be in a given microstate Macrostate: stating the total number of particles in each box yields Microstate: each way of realizing a given macro distribution Each macrostate may be realized by a number of microstates