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+{
+ "metadata": {
+  "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 17 Television"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 17.1 Page no 882"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#given\n",
+      "bw=5*10**6            #bandwidth\n",
+      "t=53.5*10**-6         #time allocated for each visible trace\n",
+      "\n",
+      "#calculation\n",
+      "T=2*bw*t              #increase in horizontal resolution\n",
+      "\n",
+      "#result\n",
+      "print\"Thus, the total number of vertical lines resolvable is \",T,\"lines\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Thus, the total number of vertical lines resolvable is  535.0 lines\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 17.2 Page no 822"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#given\n",
+      "bw=5.0*10**6                    #bandwidth\n",
+      "l=428                           #horizontal resolution\n",
+      "\n",
+      "#calculation\n",
+      "t=l/(bw*2)                      #trace time\n",
+      "x=1/30.0                        #time available for a full picture\n",
+      "y=t+10.0*10**-6                 #assuming that 10us is used for horizontal blanking\n",
+      "n=x/y                           #no. of horizontal traces\n",
+      "c=600*0.7                       #allowing 32 lines for vertical retrace\n",
+      "\n",
+      "#result\n",
+      "print\"vertical resolution = \",c,\"lines\"\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "vertical resolution =  420.0 lines\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file