An Introduction to Thermal Physics

@article{Schroeder2000AnIT,
  title={An Introduction to Thermal Physics},
  author={Daniel V. Schroeder},
  journal={American Journal of Physics},
  year={2000},
  volume={67},
  pages={1284-1285}
}
Thermal physics deals with collections of large numbers of particles—typically 1023 or so. Examples include the air in a balloon, the water in a lake, the electrons in a chunk of metal, and the photons given off by the sun. We can't possibly follow every detail of the motions of so many particles. So in thermal physics we assume that these motions are random, and we use the laws of probability to predict how the material as a whole ought to behave. Alternatively, we can measure the bulk… 

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