Physics 112 Notes .tex - \documentclass[12pt oneside{article for AMSLaTeX format\usepackage{geometry layout options There are lots\geometry{letterpaper

# Physics 112 Notes .tex - documentclass[12pt...

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\documentclass[12pt, oneside]{article} % use "amsart" instead of "article" for AMSLaTeX format \usepackage{geometry} % See geometry.pdf to learn the layout options. There are lots. \geometry{letterpaper} % ... or a4paper or a5paper or ... %\geometry{landscape} % Activate for rotated page geometry %\usepackage[parfill]{parskip} % Activate to begin paragraphs with an empty line rather than an indent \usepackage{graphicx} % Use pdf, png, jpg, or eps§ with pdflatex; use eps in DVI mode % TeX will automatically convert eps --> pdf in pdflatex \usepackage{amssymb} %SetFonts %SetFonts \title{Physics 112 Notes} \author{Laura Villarreal } %\date{} % Activate to display a given date or no date \begin{document} \maketitle %\section{} %\subsection{} \textbf{Chapter 1 : States of a Model} When we can count the quantum states accessible to a system, we know the entropy of the system. All observable physical properties such as energy and the number of particles are independent of time. Each quantum state has a definite energy. States with identical energies are know to be on the same energy level. The multiplicity or degeneracy of an energy level is the number of quantum states with very nearly the same energy. It is the number of states that is important in thermal physics, not the number of energy levels. We will deal a lot with summing the number of quantum states. To take account of the two orientations we should double the values of the multiplicities show for the hydrogen atom. \\* nx ny nz multiplicity \\* 1 1 1 --- 1 \\* 2 1 1 --- 3\\* 2 2 1 --- 3\\* 3 1 1 --- 3\\* 2 2 2 --- 1\\* 3 2 1 --- 6\\* 3 2 2 --- 3\\* The energy of a system is the total energy of all particles, kinetic plus

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• Fall '06
• StevenG.Louie

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