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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 8: Magnetic materials"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.1: Determine_magnitude_and_direction_of_magnetic_moment.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// chapter 8 , Example 8.1 , pg 238\n",
+"I=12 // current(in A)\n",
+"A=7.5*10^-4 //area(in m^2)\n",
+"M=I*A    //magnetic moment associated  with  the loop\n",
+"printf('Magnetic moment associated with  the loop(in   A m^2)=')\n",
+"disp(M)\n",
+"printf('M is directed away from  the observer  and is perpendicular  to the plane  of the loop')"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.2: Determine_magnetic_moment.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// chapter 8 , Example 8.2 , pg 238\n",
+"r=0.5*10^-10   //radius of orbit   (in m)\n",
+"e= 1.6*10^-19   //charge on electron  (in C)\n",
+"n=10^16    //frequency of revolution of electron  (in  rps)\n",
+"I=e*n      //current   (in A)\n",
+"A=%pi *r^2   //area   (in  m^2)\n",
+"M=I*A  //magnetic moment associated with  motion of electron \n",
+"printf('Magnetic moment associated with  motion of electron (in  A m^2)')\n",
+"disp(M)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.3: calculate_magnetic_susceptibility.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// chapter 8 , Example 8.3 , pg 239\n",
+"ur=5000   //relative permeability\n",
+"xm=ur-1   //magnetic susceptibility\n",
+"printf('Magnetic susceptibility=')\n",
+"disp(xm)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.4: calculate_permeability.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// chapter 8 , Example 8.4 , pg 239\n",
+"H=1800  //magnetizing field  (in  A/m)\n",
+"phi=3*10^-5   //magnetic  flux   (in Wb)\n",
+"A=0.2 *10^-4  //area  (in m^2)\n",
+"B=phi/A    //magnetic flux density   (in Wb/m^2)\n",
+"u=B/H    //permeability    (in H/m)\n",
+"printf('permeability (in  H/m )=')\n",
+"disp(u)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.5: calculate_magnetic_moment.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"// chapter 8 , Example 8.5 , pg 239\n",
+"B=0.65     //magnetic induction   (in T)\n",
+"d=8906     //density    (in Kg/m^3)\n",
+"M=58.7    //atomic weight\n",
+"e=1.6*10^-19     //charge of electron    (in C)\n",
+"h=6.625*10^-34    //plancks constant    (in m^2*Kg*S^-1)\n",
+"m=9.11*10^-31     //mass of electron   (in Kg)\n",
+"Uo=4*%pi*10^-7     //vacuum permeability\n",
+"Na=6.023*10^26    //Avogadro constant\n",
+"Ub=(e*h)/(4*%pi*m)      //Bhor magneton   (in A*m^2)\n",
+"N=(d*Na)/M     //number of atoms per unit volume\n",
+"Ur=B/(N*Uo)     //relative permeability    (in A/m^2)\n",
+"M=Ur/(Ub)      //magnetic moment\n",
+"printf('Magnetic moment')\n",
+"printf('M=%.2f   A*m^2',M)"
+   ]
+   }
+],
+"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
+}