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   "source": [
    "# CHAPTER 1: UNITS, DIMENSIONS AND STANDARDS"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 1-1, Page Number: 8"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
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   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Total Magenetic Flux = 5.0 micro weber\n",
      "Cross Section= 6.45e-04 meter square\n",
      "Flux Density(B)= 7.75 mT\n"
     ]
    }
   ],
   "source": [
    "import math\n",
    "\n",
    "#Variable Declaration\n",
    "\n",
    "phi=500*10**-8               #in weber\n",
    "A=(1*1)*(2.54*10**-2)**2     #in meter square \n",
    "\n",
    "#Calculation\n",
    "B=phi/A                      #in tesla  \n",
    "\n",
    "#Results\n",
    "print \"Total Magenetic Flux =\",phi*10**6,\"micro weber\"\n",
    "print \"Cross Section=\",'%.2e' % A,\"meter square\"\n",
    "print \"Flux Density(B)=\",round(B*10**3,2),\"mT\""
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 1-2, Page Number: 8"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Celsius Temperature= 37.0 degree celsisus\n",
      "Kelvin Temperature= 310.15 K\n"
     ]
    }
   ],
   "source": [
    "import math\n",
    "\n",
    "#Variable Declaration\n",
    "F=98.6      #Temperature =98.6 Farenheit \n",
    "\n",
    "#Calculations\n",
    "\n",
    "Celsius_temperature=(F-32)/1.8           #in Celsius\n",
    " \n",
    "Kelvin_temperature=(F-32)/1.8+273.15     #in Kelvin\n",
    "\n",
    "#Results\n",
    "print \"Celsius Temperature=\",Celsius_temperature,\"degree celsisus\"\n",
    "print \"Kelvin Temperature=\",round(Kelvin_temperature,2),\"K\"\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 1-3, Page Number: 10"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "The dimensions of Voltage and Resistance are expressed in array format[M L T I],\n",
      "Voltage= [ 1  2 -3 -1]\n",
      "Resistance= [ 1  2 -3 -2]\n"
     ]
    }
   ],
   "source": [
    "import numpy as np\n",
    "\n",
    "# Powers of M, L,T,I are expressed in an array consisting of four elements\n",
    "#Each array element represents the power of the corresponding dimension\n",
    "#it is of the form [M,L,T,I]\n",
    "\n",
    "\n",
    "P=np.array([1,2,-3,0])     #Dimesnion of Power\n",
    "I=np.array([0,0,0,1])      #Dimension of Current\n",
    "\n",
    "E=P-I      #As E=P/I, the powers have to be subtracted\n",
    "\n",
    "R=E-I      #As R=E/I, the powers have to be subtracted\n",
    "\n",
    "print \"The dimensions of Voltage and Resistance are expressed in array format[M L T I],\"\n",
    "print \"Voltage=\",E\n",
    "print \"Resistance=\",R"
   ]
  }
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