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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 13: Superconductivity"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.1: value_of_T.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc\n",
+"//to calculate value of Temperature\n",
+"Bc=105*10^3 //magnetic field in amp/m\n",
+"Bo=150*10^3 //critical field of the metal in amp/m \n",
+"Tc=9.2 //critical temperature of the metal in K\n",
+"T=Tc*sqrt(1-(Bc/Bo))\n",
+"disp('value of temperature is T='+string(T)+'K')\n",
+""
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.2: temperature_and_critical_current_density_at_the_temperature.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc\n",
+"//to calculate temperature\n",
+"Tc=7.18 //critical temperature in K\n",
+"Bc=4.5*10^3  //critical field in A/m\n",
+"Bo=6.5*10^3 //critical magnetic field in A/m\n",
+"T=Tc*sqrt(1-(Bc/Bo))\n",
+"disp('temperature is T='+string(T)+'K')\n",
+"//to calculate critical current density at that temperature\n",
+"r=1*10^-3 //diameter of the wire in mm\n",
+"TJc=(Bc*2*%pi*r)/(%pi*r^2)\n",
+"disp('the critical current density at that temperature is TJc='+string(TJc)+'A/m^2')"
+   ]
+   }
+],
+"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
+}