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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter14 WaveGuides"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 14.2.1,Pg.no.524"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "i)TE10 wave will propogate because (wl_c >wl)\n",
+      "Guide wavelength is 3.98 cm\n",
+      "Phase velocity is 39800.0 *10**6 m/s\n",
+      "Group velocity is 2261306.53 m/s\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "from math import sqrt\n",
+    "a=2.286           #in cm\n",
+    "wl_c=2.0*a*10**-2   #in m\n",
+    "c=3.0*10**8\n",
+    "wl=c/10**10       #in m\n",
+    "print 'i)TE10 wave will propogate because (wl_c >wl)'\n",
+    "#determination of gide wl\n",
+    "wl_g=10**2*(wl/(sqrt(1-(wl/wl_c)**2.0)))\n",
+    "wl_g=round(wl_g,2)\n",
+    "print 'Guide wavelength is',wl_g,'cm'\n",
+    "#determination of phase velocity\n",
+    "vp=c*wl_g/wl*10**-6\n",
+    "print 'Phase velocity is',vp,'*10**6 m/s' \n",
+    "#determination of group velocity\n",
+    "vg=c*wl/wl_g\n",
+    "vg=round(vg,2)\n",
+    "print 'Group velocity is',vg,'m/s'"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}