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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 5: Elements of Statistical Mechanics"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 3, Page number 5.32"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "temperature is 1261.6 K\n",
+      "answer given in the book is wrong\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "E=5.5;          #energy(eV)\n",
+    "Ef=5;           #fermi energy(eV)\n",
+    "p=1/100;        #probability\n",
+    "e=1.6*10**-19;  #charge(coulomb)\n",
+    "k=1.38*10**-23; #boltzmann constant \n",
+    "\n",
+    "#Calculation\n",
+    "x=E-Ef;         #difference in energy(eV)\n",
+    "y=math.log((1/p)-1);\n",
+    "T=x*e/(k*y);    #temperature(K)\n",
+    "\n",
+    "#Result\n",
+    "print \"temperature is\",round(T,1),\"K\"\n",
+    "print \"answer given in the book is wrong\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 4, Page number 5.32"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "fermi energy is 3.15 eV\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "rho=970;        #density(kg/m**3)\n",
+    "N=6.02*10**26;  #avagadro number\n",
+    "A=23;           #atomic weight(kg)\n",
+    "h=6.62*10**-34; #planks constant(Js)\n",
+    "m=9.1*10**-31;  #mass(kg)\n",
+    "e=1.6*10**-19;  #charge(coulomb)\n",
+    "\n",
+    "#Calculation\n",
+    "n=rho*N/A;      #number of atoms per m**3\n",
+    "EF=(h**2/(8*m))*((3*n/math.pi)**(2/3));     #fermi energy(J)\n",
+    "EF=EF/e;        #fermi energy(eV)\n",
+    "\n",
+    "#Result\n",
+    "print \"fermi energy is\",round(EF,2),\"eV\""
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.11"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}