Added(A)/Deleted(D) following books

 A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_1.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_10.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_11.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_13.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_2.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_3.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_4.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_5.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_6.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_7.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/CHAPTER_9.ipynb
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/screenshots/main1.png
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/screenshots/main2.png
A  Microwaves_and_Radar_Principles_and_Applications_by_A._K._Maini/screenshots/main3.png
A  sample_notebooks/AumkarRane/Chapter9.ipynb
A  sample_notebooks/DevikaRaj/Chapter6.ipynb

2 files changed, 677 insertions, 0 deletions

diff --git a/sample_notebooks/AumkarRane/Chapter9.ipynb b/sample_notebooks/AumkarRane/Chapter9.ipynb
new file mode 100644
index 00000000..49a8b300
--- /dev/null
+++ b/sample_notebooks/AumkarRane/Chapter9.ipynb
@@ -0,0 +1,194 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 9 : Special Theory of Relativity"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 1 , Page number 284"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Change in length in diameter= 6.37 *10**-2 m\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "l=2*6371        #Diameter of earth\n",
+    "v=30            #velocity\n",
+    "c=3*10**5       #velocity of light\n",
+    "\n",
+    "#Calculations\n",
+    "dell=(l*v**2)/(2*c**2)/10**-5\n",
+    "\n",
+    "#Result\n",
+    "print\"Change in length in diameter=\",round(dell,2),\"*10**-2 m\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 2 , Page number 284"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 27,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The minimum speed v=  0.99999996247 c\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "delt=10               #time duration at earth\n",
+    "delt1=1/365 \n",
+    "\n",
+    "#Calculations\n",
+    "v=math.sqrt(1-(delt1/delt)**2)\n",
+    "\n",
+    "#Result\n",
+    "print\"The minimum speed v= \",v,\"c\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 3 , Page number 285"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 39,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(1) The time taken on earth (t) =  21.05 year\n",
+      "(2) The time taken on spaceship  (t1) =  6.53 year\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "L0=20           #The distance of the star\n",
+    "v=0.95          #velocity\n",
+    "\n",
+    "#Calculations\n",
+    "t=L0/v\n",
+    "L=L0*math.sqrt(1-v**2)\n",
+    "L=round(L,1)\n",
+    "t1=(L*3*10**8)/(v*3*10**8)\n",
+    "\n",
+    "#Result\n",
+    "print\"(1) The time taken on earth (t) = \",round(t,2),\"year\"\n",
+    "print\"(2) The time taken on spaceship  (t1) = \",round(t1,2),\"year\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 4 , Page number 285"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 45,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(1) The height will be same and the length(L0)  =  6.25 m\n",
+      "(2) The time elapsed on his friend's watch(t1) =  8.0 sec\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "L=5 #Lenth\n",
+    "v=0.6 #velocity\n",
+    "t=10 #time\n",
+    "\n",
+    "#Calculations\n",
+    "L0=L/math.sqrt(1-v**2)\n",
+    "t1=t*math.sqrt(1-v**2)\n",
+    "\n",
+    "#Result\n",
+    "print\"(1) The height will be same and the length(L0)  = \",L0,\"m\"\n",
+    "print\"(2) The time elapsed on his friend's watch(t1) = \",t1,\"sec\""
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
diff --git a/sample_notebooks/DevikaRaj/Chapter6.ipynb b/sample_notebooks/DevikaRaj/Chapter6.ipynb
new file mode 100644
index 00000000..d7462a9e
--- /dev/null
+++ b/sample_notebooks/DevikaRaj/Chapter6.ipynb
@@ -0,0 +1,483 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 6: Measuring instruments"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1: pg 235"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The shunt resistance required in (ohm) =  0.163\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 235\n",
+    "#calculate the shunt resistance\n",
+    "# Given data\n",
+    "Rm = 8.;# in ohm\n",
+    "Im = 20.;# in mA\n",
+    "Im = Im * 10**-3;# in A\n",
+    "I = 1.;# in A\n",
+    "#calculations\n",
+    "# Multiplying factor\n",
+    "N = I/Im;\n",
+    "# Shunt resistance\n",
+    "Rsh = Rm/(N-1);# in ohm\n",
+    "#results\n",
+    "print \"The shunt resistance required in (ohm) = \",round(Rsh,3)\n",
+    " "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2: pg 235"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The multiplying factor is 241.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 235\n",
+    "#calculate the multiplying factor\n",
+    "# Given data\n",
+    "Rm = 6;# in ohm\n",
+    "Rsh = 0.025;# in ohm\n",
+    "#calculations\n",
+    "N = 1 + (Rm/Rsh);# multiplying factor\n",
+    "#results\n",
+    "print \"The multiplying factor is\",N\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 3: pg 235"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The resistance to be connected in parallel in (ohm) =  0.0761\n",
+      "The resistance to be connected in series in (ohm) =  661.67\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 235\n",
+    "#calculate the resistances to be connected in parallel and series\n",
+    "# Given data\n",
+    "Rm = 5.;# in ohm\n",
+    "Im = 15.;# in mA\n",
+    "Im = Im * 10**-3;# in A\n",
+    "I = 1.;# in A\n",
+    "#calculations\n",
+    "N = I/Im;# multiplying factor\n",
+    "Rsh = Rm/(N-1);# in ohm\n",
+    "print \"The resistance to be connected in parallel in (ohm) = \",round(Rsh,4)\n",
+    "V = 10;# in V\n",
+    "Rs = (V/Im)-Rm;# in ohm\n",
+    "print \"The resistance to be connected in series in (ohm) = \",round(Rs,2)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 4: pg 236"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The current range of instrument in A is 50.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 236\n",
+    "#calculate the current range of the instrument\n",
+    "# Given data\n",
+    "V=250.;# full scale voltage reading in V\n",
+    "Rm = 2.;# in ohm\n",
+    "Rsh = 2.;# in m ohm\n",
+    "Rsh = Rsh * 10**-3;# in ohm\n",
+    "R = 5000.;# in ohm\n",
+    "#calculations\n",
+    "Im = V/(Rm+R);# in A\n",
+    "Ish = (Im*Rm)/Rsh;# in A\n",
+    "# Current range of instrument\n",
+    "I = Im+Ish;# in A\n",
+    "#results\n",
+    "print \"The current range of instrument in A is\",round(I)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 5: pg 236"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The percentage error in (percentage) is 249.38\n",
+      "The answer is a bit different from textbook due to rounding off error\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 236\n",
+    "#calculate the percentage error\n",
+    "import math\n",
+    "from math import acos,pi,cos\n",
+    "# Given data\n",
+    "V = 230.;# in V\n",
+    "I = 35.;# in A\n",
+    "N = 200.;\n",
+    "t = 64.;# in sec\n",
+    "kwh = 500.;\n",
+    "#calculations\n",
+    "phi= acos(0.8);# in radians\n",
+    "Er = N/kwh;# in kWh\n",
+    "Et =  V*I*cos(phi)*t;# in Joules\n",
+    "Et = Et/3600.;# in W hour\n",
+    "Et = Et * 10**-3;# in kWh\n",
+    "# percentage error\n",
+    "PerError = ((Er-Et)/Et)*100;# in %\n",
+    "#results\n",
+    "print \"The percentage error in (percentage) is\",round(PerError,2)\n",
+    "print 'The answer is a bit different from textbook due to rounding off error'\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 6: pg 237"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The percentage error in (percentage) is  3.22\n",
+      "The answer is a bit different from textbook due to rounding off error\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 237\n",
+    "#calculate the percentage error\n",
+    "from math import acos,cos,pi\n",
+    "# Given data\n",
+    "I = 50.;# in A\n",
+    "V = 230.;# in V\n",
+    "N = 61.;\n",
+    "t = 37.;# in sec\n",
+    "KWh = 500.;\n",
+    "#calculations\n",
+    "phi= acos(1);# in radians\n",
+    "Er = N/KWh;# in kWh\n",
+    "Et = V*I*cos(phi)*t;# in Joules\n",
+    "Et = Et/3600.;# in Wh\n",
+    "Et = Et*10**-3;# in kWh\n",
+    "# Percentage error\n",
+    "PerError = ((Er-Et)/Et)*100;# in %\n",
+    "#results\n",
+    "print \"The percentage error in (percentage) is \",round(PerError,2)\n",
+    "print 'The answer is a bit different from textbook due to rounding off error'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 7: pg 237"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The series resistance in ohm is 24997.5\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 237\n",
+    "#calculate the series resistance\n",
+    "# Given data\n",
+    "Im = 20.;# in mA\n",
+    "Im =  Im * 10**-3;# in A\n",
+    "Vm = 50.;# in mV\n",
+    "Vm = Vm * 10**-3;# in V\n",
+    "V = 500.;# in V\n",
+    "#calculations\n",
+    "Rm = Vm/Im;# in ohm\n",
+    "Rs = (V/Im)-Rm;# in ohm\n",
+    "#results\n",
+    "print \"The series resistance in ohm is\",Rs\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 8: pg 238"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of Rs in (ohm) is 9950.0\n",
+      "The value of Rsh in (ohm) is 0.505\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 238\n",
+    "#calculate the values of resistances\n",
+    "# Given data\n",
+    "Rm = 50;# in ohm\n",
+    "Im = 10;# in mA\n",
+    "Im = Im * 10**-3;# in A\n",
+    "V = 100;# in V\n",
+    "#calculations\n",
+    "Rs = (V/Im)-Rm;# in ohm\n",
+    "print \"The value of Rs in (ohm) is\",Rs\n",
+    "N = 1/Im;\n",
+    "Rsh = Rm/(N-1);# in ohm\n",
+    "print \"The value of Rsh in (ohm) is\",round(Rsh,3)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 9: pg 238"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The percentage error in (percentage) is 2.08\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 238\n",
+    "#calculate the percentage error\n",
+    "# Given data\n",
+    "from math import acos,cos\n",
+    "I = 40.;# in A\n",
+    "V = 230.;# in V\n",
+    "N = 600.;\n",
+    "t = 46.;# in sec\n",
+    "#calculations\n",
+    "phi= acos(1);# in radians\n",
+    "P = V*I*cos(phi);# in W\n",
+    "P = P * 10**-3;# in kW\n",
+    "# 1 kWh = 500 revolution \n",
+    "P = P * 500.;# in revolution\n",
+    "T = (3600./t)*60;# in revolution\n",
+    "# Percentage error\n",
+    "PerError = ((T-P)/P)*100;# in %\n",
+    "#results\n",
+    "print \"The percentage error in (percentage) is\",round(PerError,2)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 10: pg 238"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The percentage error in (percentage) is 4.167\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 238\n",
+    "#calculate the percentage error\n",
+    "# Given data\n",
+    "N = 100.;\n",
+    "I = 20.;# in A\n",
+    "V = 210.;# in V\n",
+    "pf = 0.8;# in lad\n",
+    "Er = 350.;# in rev\n",
+    "a = 3.36;# assumed\n",
+    "#calculations\n",
+    "Et = (a*3600.)/3600;# in kWh\n",
+    "# 1 kWh = 100;#  revolution\n",
+    "Et = Et*N;# revolution\n",
+    "# Percentage error\n",
+    "PerError = ((Er-Et)/Et)*100;# in %\n",
+    "#results\n",
+    "print \"The percentage error in (percentage) is\",round(PerError,3)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 11: pg 239"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The percentage error in (percentage) is 3.22\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pg 239\n",
+    "#calculate the percentage error\n",
+    "# Given data\n",
+    "I = 5.;# in A\n",
+    "V = 230.;# in V\n",
+    "N = 61.;# number of revolution\n",
+    "t = 37.;# in sec\n",
+    "# speed of the disc\n",
+    "discSpeed= 500.;# in rev/kWh\n",
+    "#calculations\n",
+    "Er = N/discSpeed;\n",
+    "Et = (V*I*t)/(3600*100);\n",
+    "# percentage error\n",
+    "PerError = ((Er-Et)/Et)*100;# in %\n",
+    "#results\n",
+    "print \"The percentage error in (percentage) is\",round(PerError,2)\n"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.11"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}