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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 1: Crystallography And Crystal Imperfection"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 1.1: density_of_metal.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//chapter-1,Example1_1,pg 40\n",
+"\n",
+"n=4\n",
+"\n",
+"M=65.34\n",
+"\n",
+"N=6.023*10^23\n",
+"\n",
+"d111=2.08*10^-8//interplannar spacing\n",
+"\n",
+"a=d111*sqrt((1^2)+(1^2)+(1^2))\n",
+"\n",
+"D=(n*M)/(N*(a^3))\n",
+"\n",
+"printf('density of Cu-metal\n')\n",
+"\n",
+"printf('D=%.2f g/cc',D)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 1.2: find_intercepts_along_crystal_axis.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//chapter-1,Example1_2,pg 40\n",
+"\n",
+"//miller plane 231\n",
+"\n",
+"a=1.2*10^-10\n",
+"\n",
+"b=1.8*10^-10\n",
+"\n",
+"c=2*10^-10//primitives of crystal\n",
+"\n",
+"//intercepts of ABC plane\n",
+"\n",
+"a1=a/2\n",
+"\n",
+"b1=b/3\n",
+"\n",
+"c1=c/1\n",
+"\n",
+"//intercept of ABC plane along X-axis =0.6*10^-10\n",
+"\n",
+"//ABC is not the reqd. plane\n",
+"\n",
+"//intercept of DEF plane parallel to ABC\n",
+"\n",
+"a2=a\n",
+"\n",
+"b2=(2*b)/3\n",
+"\n",
+"c2=2*c\n",
+"\n",
+"//miller indices for DEF\n",
+"\n",
+"//1:(3/2):(1/2)\n",
+"\n",
+"printf('intercept of DEF plane\n')\n",
+"\n",
+"printf('along x-axis=%.11f\n',a2)\n",
+"\n",
+"printf('along y-axis=%.11f\n',b2)\n",
+"\n",
+"printf('\nalong z-axis=%.11f',c2)\n",
+"\n",
+"printf('\nDEF is the reqd. plane')"
+   ]
+   }
+],
+"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
+}