1 files changed, 147 insertions, 0 deletions
diff --git a/backup/A_Textbook_Of_Engineering_Physics_version_backup/Chapter5.ipynb b/backup/A_Textbook_Of_Engineering_Physics_version_backup/Chapter5.ipynb
new file mode 100755
index 00000000..f25c1843
--- /dev/null
+++ b/backup/A_Textbook_Of_Engineering_Physics_version_backup/Chapter5.ipynb
@@ -0,0 +1,147 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:b45bed0bf651f557c40cec41e1736def1e279410a176004acdb12e68c84f8fd8"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Chapter5Electron Oprtics"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex1-pg 72"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "##Example 5.1\n",
+      "##Electron refraction, calculation of potential difference\n",
+      "\n",
+      "##given values\n",
+      "V1=250.;##potential by which electrons are accelerated in Volts\n",
+      "alpha1=50*math.pi/180.;##in degree\n",
+      "alpha2=30*math.pi/180.;##in degree\n",
+      "b=math.sin(alpha1)/math.sin(alpha2);\n",
+      "##calculation\n",
+      "V2=(b**2.)*V1;\n",
+      "a=V2-V1;\n",
+      "print'%s %.1f %s'%('potential difference(in volts) is:',a,'');\n",
+      "\n",
+      "\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "potential difference(in volts) is: 336.8 \n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex2 $3-pg94"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "##Example 5.2&5.3\n",
+      "import math\n",
+      "##Cyclotron, calculation of magnetic induction,maximum energy\n",
+      "##given values\n",
+      "f=12*(10**6);##oscillator frequency in Hertz\n",
+      "r=.53;##radius of the dee in metre\n",
+      "q=1.6*10**-19;##Deuteron charge in C\n",
+      "m=3.34*10**-27;##mass of deuteron in kg\n",
+      "##calculation\n",
+      "B=2*math.pi*f*m/q;##\n",
+      "print'%s %.1f %s'%('magnetic induction (in Tesla) is:',B,'');\n",
+      "E=B**2*q**2.*r**2./(2.*m);\n",
+      "print'%s %.3e %s'%('maximum energy to which deuterons can be accelerated (in J) is',E,'')\n",
+      "E1=E*6.24*10**18/10**6;##conversion of energy into MeV\n",
+      "print'%s %.1f %s'%('maximum energy to which deuterons can be accelerated (in MeV) is',E1,'');\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "magnetic induction (in Tesla) is: 1.6 \n",
+        "maximum energy to which deuterons can be accelerated (in J) is 2.667e-12 \n",
+        "maximum energy to which deuterons can be accelerated (in MeV) is 16.6 \n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex4-pg99"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "##Example 5.4\n",
+      "##Mass spectrograph, calculation of linear separation of lines formed on photographic plates\n",
+      "\n",
+      "##given values;\n",
+      "E=8.*10**4;##electric field in V/m\n",
+      "B=.55##magnetic induction in Wb/m*2\n",
+      "q=1.6*10**-19;##charge of ions\n",
+      "m1=20.*1.67*10**-27;##atomic mass of an isotope of neon\n",
+      "m2=22.*1.67*10**-27;##atomic mass of other isotope of neon\n",
+      "##calculation\n",
+      "x=2*E*(m2-m1)/(q*B**2);##\n",
+      "print'%s %.3f %s'%('separation of lines (in metre) is:',x,'')\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "separation of lines (in metre) is: 0.011 \n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file