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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:3bf1b2120b5dacb9d86b4fa6efbc4300ebec3d48ce95ec80e2e6a8f936088a09"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "8: Statistical physics"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 8.2, Page number 164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "rho=10.5;    #density of silver(g/cc)\n",
+      "M=108;    #atomic weight(g/mole)\n",
+      "NA=6.02*10**23;   #avagadro number(atoms/mole)\n",
+      "h=6.626*10**-34;    #planck's constant(Js)\n",
+      "m=9.1*10**-31;    #mass of electron(kg)\n",
+      "e=1.6*10**-19;   #conversion factor from J to eV\n",
+      "\n",
+      "#Calculation\n",
+      "NbyV=rho*NA/M;    #number density of conduction electrons(per cc)\n",
+      "NbyV=NbyV*10**6;   #number density of conduction electrons(per m**3)\n",
+      "EF=(h**2/(8*m))*(3*NbyV/math.pi)**(2/3);   #fermi energy(J)\n",
+      "EF=EF/e;   #fermi energy(eV)\n",
+      "E=3*EF/5;    #mean energy of electron(eV)\n",
+      "\n",
+      "#Result\n",
+      "print \"number density of conduction electrons is\",round(NbyV/10**28,2),\"*10**28 per m**3\"\n",
+      "print \"fermi energy is\",round(EF,2),\"eV\"\n",
+      "print \"mean energy of electron is\",round(E,2),\"eV\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "number density of conduction electrons is 5.85 *10**28 per m**3\n",
+        "fermi energy is 5.51 eV\n",
+        "mean energy of electron is 3.31 eV\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 8.3, Page number 164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "T=300;    #temperature(K)\n",
+      "k=1.38*10**-23;   #boltzmann constant(J/K)\n",
+      "EF=5.49;    #fermi energy(eV)\n",
+      "e=1.6*10**-19;   #conversion factor from J to eV\n",
+      "R=1;   #assume\n",
+      "\n",
+      "#Calculation\n",
+      "CV=math.pi**2*k*T*R/(2*EF*e);    #electronic contribution of Silver(R)\n",
+      "\n",
+      "#Result\n",
+      "print \"electronic contribution of Silver is\",round(CV,5),\"R\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "electronic contribution of Silver is 0.02326 R\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file