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diff --git a/sample_notebooks/VidyashankarVenkatraman/Chapter_3_Kittel.ipynb b/sample_notebooks/VidyashankarVenkatraman/Chapter_3_Kittel.ipynb
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+{
+ "metadata": {
+  "name": "Chapter_3_Kittel"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": "Introduction to Solid State Physics"
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": "Example number 3.1, Page Number 84\n"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "#importing module\n\nfrom __future__ import division\nimport math\n\n#Variable declaration\n\ne = 5*pow(10,-10);  # charge on the electron\n\nr0 = 1*pow(10,-8);   # atomic radius\n\n# Calculation\n\nR = 4*10**(-8);   # interatomic distance in cm\n\nU = -4*e**2*r0**5/R**6;   # The van der waals interaction formula\n\n# Result\n\nprint \" The Van Der Waals interaction energy is \",U ,\"ergs\"",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": " The Van Der Waals interaction energy is  -2.44140625e-14 ergs\n"
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": "Example number 3.2, Page Number 91"
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "#importing module\n\nfrom __future__ import division\nimport math\n\n# Variable declaration\n\ne = 4.8*pow(10,-10);  # charge on proton\nr0 = 2.81*pow(10,-8);   # distance between positive and nearest negative ion in Nacl crystal\n\nU = e**2/r0;    # in ergs\n\nE = U/(1.6019*pow(10,-12));   # converting to eV as 1eV = 1.6019 * 10**(-12) ergs\n\n#result\nprint \" The potential energy of the two ions by themselves is \",E,\"eV\"\n\n\n\n\n\n\n ",
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": " The potential energy of the two ions by themselves is  5.11847696874 eV\n"
+      }
+     ],
+     "prompt_number": 22
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "",
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 19
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": "",
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
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