Chapter 1: From Microscopic to Macroscopic Behavior

Microscopic behavior refers to the motion of individual particles or the flipping of spins, while macroscopic behavior refers to properties such as temperature, pressure, volume, and magnetization. In this introductory chapter the connections between these two points of view are discussed and illustrated with computer simulations. Thermal equilibrium, fluctuations in equilibrium, models of microscopic systems, and an introduction to other topics in thermal physics are discussed.

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