1 files changed, 112 insertions, 0 deletions
diff --git a/Applied_Physics_by_S._Mani_Naidu/Chapter10.ipynb b/Applied_Physics_by_S._Mani_Naidu/Chapter10.ipynb
new file mode 100644
index 00000000..8d14ee64
--- /dev/null
+++ b/Applied_Physics_by_S._Mani_Naidu/Chapter10.ipynb
@@ -0,0 +1,112 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 10: Lasers"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 1, Page number 10-20"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "band gap is 0.8 eV\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "c=3*10**8;                 #velocity of light(m/s)\n",
+    "h=6.63*10**-34;            #plank's constant(Js)\n",
+    "e=1.6*10**-19;             #charge(coulomb)\n",
+    "lamda=1.55*10**-6;         #wavelength(m)\n",
+    "\n",
+    "#Calculation\n",
+    "Eg=h*c/(lamda*e);          #band gap(eV)   \n",
+    "\n",
+    "#Result\n",
+    "print \"band gap is\",round(Eg,1),\"eV\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 2, Page number 10-20"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "wavelength is 8633 angstrom\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "c=3*10**8;                 #velocity of light(m/s)\n",
+    "h=6.63*10**-34;            #plank's constant(Js)\n",
+    "e=1.6*10**-19;             #charge(coulomb)\n",
+    "Eg=1.44*e;                 #band gap(eV)   \n",
+    "\n",
+    "#Calculation\n",
+    "lamda=h*c*10**10/Eg;       #wavelength(angstrom)\n",
+    "\n",
+    "#Result\n",
+    "print \"wavelength is\",int(round(lamda)),\"angstrom\""
+   ]
+  }
+ ],
+ "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": "2.7.11"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}