1 files changed, 101 insertions, 0 deletions
diff --git a/Engineering_Physics_by_Rajendran/Chapter9.ipynb b/Engineering_Physics_by_Rajendran/Chapter9.ipynb
new file mode 100755
index 00000000..aa1abf35
--- /dev/null
+++ b/Engineering_Physics_by_Rajendran/Chapter9.ipynb
@@ -0,0 +1,101 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:5f6e5e5e16ae36be54b773743f59e15ae672a0cecdab4854d7e43b7f805f4ffa"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "9: Photoelasticity"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 9.1, Page number 10"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "alpha1_alpha2=10*10**8;   #difference between pincipal stress(N/m**2)\n",
+      "c=1*10**-12;    #stress optic coefficient(m**2/N)\n",
+      "\n",
+      "#Calculation\n",
+      "N=c*alpha1_alpha2;   #difference between refractive indices\n",
+      "\n",
+      "#Result\n",
+      "print \"difference between refractive indices is\",N"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "difference between refractive indices is 0.001\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 9.2, Page number 10"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "alpha1=405*10**6;    #principal stress(N/m**2)\n",
+      "alpha2=-105*10**6;   #principal stress(N/m**2)\n",
+      "\n",
+      "#Calculation\n",
+      "tow_max=(alpha1-alpha2)/2;   #maximum shearing stress(N/m**2)\n",
+      "\n",
+      "#Result\n",
+      "print \"maximum shearing stress is\",tow_max*10**-6,\"*10**6 N/m**2\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "maximum shearing stress is 255.0 *10**6 N/m**2\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file