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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 15: Display Devices"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 15.1: wavelength_of_light.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// Example 15.1, page no-406\n",
+"clear\n",
+"clc\n",
+"\n",
+"e=1.6*10^-19//C\n",
+"eg=1.8//eV\n",
+"E=e*eg\n",
+"h=6.626*10^-34\n",
+"c=3*10^8//m/s\n",
+"lam=h*c/E\n",
+"printf('The wavelenth of light emitted from given LED is %.4f µm',lam*10^6)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 15.2: Band_Gap_of_GaAsP.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// Example 15.2, page no-406\n",
+"clear\n",
+"clc\n",
+"\n",
+"e=1.6*10^-19//C\n",
+"h=6.626*10^-34\n",
+"c=3*10^8//m/s\n",
+"lam=6751*10^-10//m\n",
+"E=h*c/lam\n",
+"E=E/e\n",
+"printf('The band gap of the given GaAsP is %.1f eV',E)"
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}