Added(A)/Deleted(D) following books

 A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter10_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter11_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter12_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter13_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter1_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter2_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter3_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter4_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter5_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter6_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter7_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter8_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/chapter9_2.ipynb
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/screenshots/Frequency_2.png
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/screenshots/Saturation_2.png
A  Design_With_Operational_Amplifiers_And_Analog_Integrated_Circuits_by_Sergio_Franco/screenshots/Step_2.png
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/CHAPTER_1.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/CHAPTER_12.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/CHAPTER_2_.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/CHAPTER_7.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/CHAPTER_8.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/Chapter_5.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/Chapter_6.ipynb
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/screenshots/r.k.rajput12_3.png
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/screenshots/r.k_rajput_3.png
A  Electronic_Measurements_and_Instrumentation_by_Er.R.K.Rajput/screenshots/r.krajput_3.png
A  Heat_and_Thermodynamics_by__Brijlal_and_N._Subrahmanyam/README.txt
A  Optoelectronics:_An_Introduction_by_John_Wilson_&_John_Hawkes/README.txt
A  sample_notebooks/SachinNaik/ch8.ipynb
A  sample_notebooks/VinayBadhan/Samplenotebook.ipynb
A  sample_notebooks/kapiljain/chapter16.ipynb

3 files changed, 495 insertions, 0 deletions

diff --git a/sample_notebooks/SachinNaik/ch8.ipynb b/sample_notebooks/SachinNaik/ch8.ipynb
new file mode 100644
index 00000000..4459e9a8
--- /dev/null
+++ b/sample_notebooks/SachinNaik/ch8.ipynb
@@ -0,0 +1,356 @@
+{
+ "metadata": {
+  "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 8: Brakes and Dynamometers"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 1, Page 252"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "\n",
+      "#Variable declaration\n",
+      "dia=12#in\n",
+      "r=dia/2\n",
+      "CQ=7#in\n",
+      "OC=6#in\n",
+      "OH=15#in\n",
+      "u=0.3\n",
+      "P=100#lb\n",
+      "\n",
+      "#Calculations\n",
+      "phi=math.atan(u)\n",
+      "x=r*math.sin(phi)#in inches;radius of friction circle\n",
+      "a=5.82#from figure\n",
+      "Tb=P*OH*x/a#braking torque\n",
+      "\n",
+      "#Result\n",
+      "print \"The braking torque of the drum Tb= %.f lb\"%Tb"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The braking torque of the drum Tb= 444 lb\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2, Page 252"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "\n",
+      "#Variable declaration\n",
+      "OH=15#in\n",
+      "l=OH\n",
+      "u=0.3\n",
+      "P=100#lb\n",
+      "dia=12#in\n",
+      "r=dia/2\n",
+      "\n",
+      "#Calculations\n",
+      "phi=math.atan(u)\n",
+      "#according to fig 170(b)\n",
+      "#for clockwise rotation\n",
+      "a=6#from figure\n",
+      "x=r*math.sin(phi)#in inches;radius of friction circle\n",
+      "Tb=P*l*x/a#braking torque on the drum\n",
+      "#for counter clockwise rotation\n",
+      "a1=5.5#in\n",
+      "Tb1=P*l*x/a1#braking torque on the drum\n",
+      "#according to figure 172(a)\n",
+      "#for clockwise rotation\n",
+      "a2=6.48#from figure\n",
+      "x=r*math.sin(phi)#in inches;radius of friction circle\n",
+      "Tb2=P*l*x/a2#braking torque on the drum\n",
+      "#for counter clockwise rotation\n",
+      "a3=6.38#in\n",
+      "Tb3=P*l*x/a3#braking torque on the drum\n",
+      "T1=math.ceil(Tb1)\n",
+      "T2=math.ceil(Tb2)\n",
+      "T3=math.ceil(Tb3)\n",
+      "\n",
+      "#Result\n",
+      "print \"Braking torque on drum:\\nWhen dimensions are measured from fig 170(b)\\nFor clockwise rotation= %.f lb in\"\\\n",
+      "\"\\nFor counter clockwise rotation= %.f lb in\"%(Tb,T1)\n",
+      "print \"\\nWhen dimensions are measured from fig 171(a)\\nFor clockwise rotation= %.f lb in\"\\\n",
+      "\"\\nFor counter clockwise rotation= %.f lb\"%(T2,T3)\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Braking torque on drum:\n",
+        "When dimensions are measured from fig 170(b)\n",
+        "For clockwise rotation= 431 lb in\n",
+        "For counter clockwise rotation= 471 lb in\n",
+        "\n",
+        "When dimensions are measured from fig 171(a)\n",
+        "For clockwise rotation= 400 lb in\n",
+        "For counter clockwise rotation= 406 lb\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 3, Page 253"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "\n",
+      "#Variable declaration\n",
+      "u=.35\n",
+      "Tb=500#lb.ft\n",
+      "rd=10#in\n",
+      "\n",
+      "#Calculations\n",
+      "phi=math.atan(u)\n",
+      "x=rd*math.sin(phi)\n",
+      "#F*OD=R*a=R1*a\n",
+      "#R=R1\n",
+      "#2*R*x=Tb\n",
+      "OD=24#in\n",
+      "a=11.5#inches; From figure\n",
+      "F=Tb*a*12/(OD*2*x)\n",
+      "#from figure\n",
+      "HG=4#in\n",
+      "GK=12#in\n",
+      "HL=12.22#in\n",
+      "P=F*HG/GK\n",
+      "Fhd=HL*P/HG\n",
+      "\n",
+      "#Results\n",
+      "print \"a) Magnitude of P = %.f lb\"%P\n",
+      "print \"b) Magnitude of Fhd = %.f lb\"%Fhd"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "a) Magnitude of P = 145 lb\n",
+        "b) Magnitude of Fhd = 443 lb\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 4, Page 259"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "\n",
+      "#Variable declaration\n",
+      "u=.3\n",
+      "theta=270*math.pi/180\n",
+      "l=18#in\n",
+      "a=4#in\n",
+      "Di=15#in\n",
+      "Do=21#in\n",
+      "w=.5#tons\n",
+      "\n",
+      "#Calculations\n",
+      "W=w*2204#lb\n",
+      "Q=W*Di/Do#required tangential braking force on the drum\n",
+      "k=math.e**(u*theta)#k=T1/T2\n",
+      "p=Q*a/(l*(k-1))\n",
+      "\n",
+      "#Result\n",
+      "print \"Least force required, P = %.f lb\"%p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Least force required, P = 56 lb\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 5, Page 264"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "\n",
+      "#Variable declaration\n",
+      "n=12\n",
+      "u=.28\n",
+      "a=4.5#in\n",
+      "b=1#in\n",
+      "l=21#in\n",
+      "r=15#in\n",
+      "Tb=4000#lb\n",
+      "\n",
+      "#Calculations\n",
+      "theta=10*math.pi/180\n",
+      "#k=Tn/To\n",
+      "k=((1+u*math.tan(theta))/(1-u*math.tan(theta)))**n\n",
+      "Q=Tb*(12./r)\n",
+      "P=Q*(a-b*k)/(l*(k-1))#from combining 8.6 with k=e^u*theta\n",
+      "\n",
+      "#Result\n",
+      "print \"The least effort required = P = %.1f lb\"%P"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The least effort required = P = 82.2 lb\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 6, Page 274"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Variable declaration\n",
+      "w=9.5 #ft\n",
+      "h= 2. #ft\n",
+      "x=4. #ft\n",
+      "v=30.#mph\n",
+      "\n",
+      "#Calculations\n",
+      "V=1.46667*v#ft/s\n",
+      "u1=.1\n",
+      "u2=.6\n",
+      "g=32.2#ft/s**2\n",
+      "#a) rear wheels braked\n",
+      "fa1=(u1*(w-x)*g)/(w+u1*h)\n",
+      "fa2=(u2*(w-x)*g)/(w+u2*h)\n",
+      "sa1=V**2/(2*fa1)\n",
+      "sa2=V**2/(2*fa2)\n",
+      "#b) front wheels braked\n",
+      "fb1=u1*x*g/(w-u1*h)\n",
+      "fb2=u2*x*g/(w-u2*h)\n",
+      "sb1=V**2/(2*fb1)\n",
+      "sb2=V**2/(2*fb2)\n",
+      "#c) All wheels braked\n",
+      "fc1=u1*g\n",
+      "fc2=u2*g\n",
+      "sc1=V**2/(2*fc1)\n",
+      "sc2=V**2/(2*fc2)\n",
+      "k1=(x+u1*h)/(w-x-u1*h)#Na/Nb\n",
+      "k2=(x+u2*h)/(w-x-u2*h)#Na/Nb\n",
+      "\n",
+      "#Results\n",
+      "print \"Coefficient of friction = 0.1\\na) Minimum distance in which car may be stopped when the rear brakes are\"\\\n",
+      "\"applied = %.f ft\\nb) Minimum distance in which car may be stopped when the front brakes are applied = %.f ft\"\\\n",
+      "\"\\nc) Minimum distance in which car may be stopped when all brakes are applied = %.f ft\"%(sa1,sb1,sc1)\n",
+      "print \"\\nCoefficient of friction = 0.6\\na) Minimum distance in which car may be stopped when the rear brakes are \"\\\n",
+      "\"applied = %.1f ft\\nb) Minimum distance in which car may be stopped when the front brakes are applied = %.f ft\"\\\n",
+      "\"\\nc) Minimum distance in which car may be stopped when all brakes are applied = %.1f ft\"%(sa2,sb2,sc2)\n",
+      "print \"\\nRequired ration of Na/Nb\\nFor u1 = 0.1 -> %.3f\\nFor u2 = 0.6 -> %.2f\"%(k1,k2)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Coefficient of friction = 0.1\n",
+        "a) Minimum distance in which car may be stopped when the rear brakes areapplied = 530 ft\n",
+        "b) Minimum distance in which car may be stopped when the front brakes are applied = 699 ft\n",
+        "c) Minimum distance in which car may be stopped when all brakes are applied = 301 ft\n",
+        "\n",
+        "Coefficient of friction = 0.6\n",
+        "a) Minimum distance in which car may be stopped when the rear brakes are applied = 97.5 ft\n",
+        "b) Minimum distance in which car may be stopped when the front brakes are applied = 104 ft\n",
+        "c) Minimum distance in which car may be stopped when all brakes are applied = 50.1 ft\n",
+        "\n",
+        "Required ration of Na/Nb\n",
+        "For u1 = 0.1 -> 0.792\n",
+        "For u2 = 0.6 -> 1.21\n"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/sample_notebooks/VinayBadhan/Samplenotebook.ipynb b/sample_notebooks/VinayBadhan/Samplenotebook.ipynb
new file mode 100644
index 00000000..b90a0762
--- /dev/null
+++ b/sample_notebooks/VinayBadhan/Samplenotebook.ipynb
@@ -0,0 +1,63 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 3 , Electricity and Ohm's Law\n",
+    " "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Terminal voltage of a battery is  1.5  V.\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 3.1 , Page Number 23\n",
+    "\n",
+    "import math \n",
+    "\n",
+    "W = 75.0     #Work done (in Joules)\n",
+    "Q = 50.0     #Charge produced (in Coulomb)\n",
+    "\n",
+    "#Calculation\n",
+    "V = W/Q    #Voltage between battery terminals (in Volts)\n",
+    "\n",
+    "#Result\n",
+    "print \"Terminal voltage of a battery is \",V,\" V.\""
+   ]
+  }
+ ],
+ "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": "2.7.5"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
diff --git a/sample_notebooks/kapiljain/chapter16.ipynb b/sample_notebooks/kapiljain/chapter16.ipynb
new file mode 100644
index 00000000..933b83a2
--- /dev/null
+++ b/sample_notebooks/kapiljain/chapter16.ipynb
@@ -0,0 +1,76 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 16 : MAGNETIC MATERIALS"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 1, Page number 298"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Intensity of Magnetization= 5.0 ampere/m\n",
+      "Flux density in the material= 1.257 weber/m^2\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "H=10**6                #Magnetic Field Strength in ampere/m\n",
+    "x=0.5*10**-5           #Magnetic susceptibility \n",
+    "mu_0=4*math.pi*10**-7\n",
+    "\n",
+    "#Calculatiions\n",
+    "M=x*H\n",
+    "B=mu_0*(M+H)\n",
+    "\n",
+    "#Result\n",
+    "print\"Intensity of Magnetization=\",M,\"ampere/m\"\n",
+    "print\"Flux density in the material=\",round(B,3),\"weber/m^2\"\n",
+    "\n",
+    "\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": "2.7.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}