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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 22: Superconductivity"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 22.1: calculation_of_magnetic_field.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;clear;\n",
+"//Example 22.1\n",
+"//calculation of magnetic field\n",
+"\n",
+"//given values\n",
+"\n",
+"Tc=7.2;//transition temp in K\n",
+"T=5;//temp in K\n",
+"Hc=3.3*10^4;//magnetic field at T in A/m\n",
+"\n",
+"\n",
+"//calculation\n",
+"Hc0=Hc/(1-(T^2/Tc^2));\n",
+"disp(Hc0,'max value of H at 0K (in A/m) is ');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 22.2: calculation_of_transition_temperature.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;clear;\n",
+"//Example 22.2\n",
+"//calculation of transition temperature\n",
+"\n",
+"//given values\n",
+"\n",
+"T=8;//temp in K\n",
+"Hc=1*10^5;//critical magnetic field at T in A/m\n",
+"Hc0=2*10^5;//magnetic field at 0 K in A/m\n",
+"\n",
+"//calculation\n",
+"Tc=T/(sqrt(1-Hc/Hc0));\n",
+"disp(Tc,'transition temp in K is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 22.3: calculation_of_temp_at_which_there_is_max_critical_field.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;clear;\n",
+"//Example 22.3\n",
+"//calculation of temp at which there is  max critical field\n",
+"\n",
+"//given values\n",
+"\n",
+"Tc=7.26;//critical temp in K\n",
+"Hc=8*10^5;//max critical magnetic field at T in A/m\n",
+"H=4*10^4;// subjected magnetic field at in A/m\n",
+"\n",
+"//calculation\n",
+"T=Tc*(sqrt(1-H/Hc));\n",
+"disp(T,'max temp for superconductivity in K is');"
+   ]
+   }
+],
+"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
+}