Added(A)/Deleted(D) following books

 R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter11.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter11.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter11_1cYIymv.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter11_1cYIymv.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter11_b2XsTwq.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter11_b2XsTwq.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter12.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter12.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter12_MbtXOSy.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter12_MbtXOSy.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter12_tyNLSnr.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter12_tyNLSnr.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter13.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter13.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter13_IKwAwKI.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter13_IKwAwKI.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter13_xbFXJW8.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter13_xbFXJW8.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter14.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter14.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter14_Gi0X0ZR.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter14_Gi0X0ZR.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter14_XSNxMWG.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter14_XSNxMWG.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter15_QY6wZIq.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15_QY6wZIq.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter15_RiCS0Ai.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15_RiCS0Ai.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter16_0NyhPvP.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16_0NyhPvP.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter16_pnkscJu.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16_pnkscJu.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter18.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter18.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter18_C36GpSn.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter18_C36GpSn.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter18_EqgYm0p.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter18_EqgYm0p.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter19.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter19.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter19_0g2boiT.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter19_0g2boiT.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter19_QpHK5JI.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter19_QpHK5JI.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter2.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter2.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter20_SPZbkqz.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20_SPZbkqz.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter20_hKMNWxW.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20_hKMNWxW.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter21.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter21.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter21_GeNhAzQ.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter21_GeNhAzQ.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter21_tQfhnpH.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter21_tQfhnpH.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter22.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter22.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter22_R5zqRoP.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter22_R5zqRoP.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter22_wZJNJdr.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter22_wZJNJdr.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter23.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter23.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter23_3CMvYM4.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter23_3CMvYM4.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter23_9hMbnX4.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter23_9hMbnX4.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter2_8BakG8I.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter2_8BakG8I.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter2_W8u7liz.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter2_W8u7liz.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter5.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter5.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter5_RsBz4a7.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter5_RsBz4a7.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter5_VQzvFGO.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter5_VQzvFGO.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter6.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter6.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter6_18MJqWw.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter6_18MJqWw.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter6_4vuzkiJ.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter6_4vuzkiJ.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter8.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter8.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter8_817bFiA.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter8_817bFiA.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter8_wMvTWIF.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter8_wMvTWIF.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter9.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter9.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter9_f0YzOCH.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter9_f0YzOCH.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter9_vhHgT2e.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter9_vhHgT2e.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/cap1.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/cap1.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/cap1_v96t3WK.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/cap1_v96t3WK.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index2.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index2.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index2_za7aGFC.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index2_za7aGFC.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index_Is0qqx4.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index_Is0qqx4.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/pic1.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/pic1.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/pic2.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/pic2.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/pic3.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/pic3.png
M  f_by_df/README.txt
A  f_by_df/ami.ipynb
A  f_by_df/screenshots/array_factor_TIPCqXh.png
A  f_by_df/screenshots/array_factor_iQfSDI6.png
A  f_by_df/screenshots/blank1_copy.png

5 files changed, 234 insertions, 4 deletions

diff --git a/f_by_df/README.txt b/f_by_df/README.txt
index e0c5014c..f879bb2b 100755
--- a/f_by_df/README.txt
+++ b/f_by_df/README.txt
@@ -1,7 +1,7 @@
-Contributed By: Jeevan Lal
-Course: me
-College/Institute/Organization: MPBtech. ECE, 6th SemVNIT Nagpur
-Department/Designation: MPBtech. ECE, 6th SemVNIT Nagpur
+Contributed By: asmita asmita
+Course: mtech
+College/Institute/Organization: sd
+Department/Designation: sd
 Book Title: f
 Author: df
 Publisher: 5
diff --git a/f_by_df/ami.ipynb b/f_by_df/ami.ipynb
new file mode 100644
index 00000000..c1ea8d5d
--- /dev/null
+++ b/f_by_df/ami.ipynb
@@ -0,0 +1,230 @@
+{

+ "metadata": {

+  "name": "",

+  "signature": "sha256:52168f8cf69a70c4ff180e7d64c2bf193739db268ee5cdc6db9f3696c7774225"

+ },

+ "nbformat": 3,

+ "nbformat_minor": 0,

+ "worksheets": [

+  {

+   "cells": [

+    {

+     "cell_type": "heading",

+     "level": 1,

+     "metadata": {},

+     "source": [

+      "Chapter4-Basic Terms of Physics and Engineering"

+     ]

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Ex1-pg61"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#find the area piston for given parameters\n",

+      "#given\n",

+      "a=3.\n",

+      "#diameter squared\n",

+      "#calculation\n",

+      "A=0.785*3**2\n",

+      "print\"%s %.2f %s\"%(\"area of piston \",A,\"\")\n"

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "area of piston  7.07 \n"

+       ]

+      }

+     ],

+     "prompt_number": 1

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Ex2-pg62"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#given\n",

+      "#find the area of piston and displacement of that piston\n",

+      "a=3.\n",

+      "b=4.\n",

+      "A=0.785*3**2\n",

+      "print\"%s %.2f %s\"%(\"area of piston \",A,\"\")\n",

+      "D=A*b\n",

+      "#by using above results\n",

+      "print\"%s %.2f %s\"%(\"displacement of piston \",D,\"cu in\")"

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "area of piston  7.07 \n",

+        "displacement of piston  28.26 cu in\n"

+       ]

+      }

+     ],

+     "prompt_number": 2

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Ex3-pg63"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#given\n",

+      "#find the piston speed\n",

+      "pa=9.\n",

+      "S=1600.\n",

+      "#average piston velocity =distance traveld/time to travel\n",

+      "#first divide by 1 min and u will get same result late divide by 12 because to express per minute\n",

+      "Ps=(pa*S)/(12.)\n",

+      "print\"%s %.2f %s\"%(\"piston speed \",Ps,\"ft per min\")"

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "piston speed  1200.00 ft per min\n"

+       ]

+      }

+     ],

+     "prompt_number": 3

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Ex4-pg65"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#given\n",

+      "#compute the average acceleration  `\n",

+      "#pressure= force/area\n",

+      "#first express the velocity in ft per sec.time\n",

+      "t=5.\n",

+      "v=9000.\n",

+      "Min=(9000./60.)\n",

+      "Aa=(Min/t)\n",

+      "print\"%s %.2f %s\"%(\"average acceleration\",Aa,\"ft per sec^2\")"

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "average acceleration 30.00 ft per sec^2\n"

+       ]

+      }

+     ],

+     "prompt_number": 4

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Ex5-pg65"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#compute the pressure force\n",

+      "#given\n",

+      "w=12000.\n",

+      "p=6.\n",

+      "a=10**2\n",

+      "f=p*a\n",

+      "P=w/f\n",

+      "print\"%s %.2f %s\"%(\"pressure  \",P,\"Psi\")"

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "pressure   20.00 Psi\n"

+       ]

+      }

+     ],

+     "prompt_number": 5

+    },

+    {

+     "cell_type": "heading",

+     "level": 2,

+     "metadata": {},

+     "source": [

+      "Ex6-pg66"

+     ]

+    },

+    {

+     "cell_type": "code",

+     "collapsed": false,

+     "input": [

+      "#given\n",

+      "#compute the gas force action on pistion \n",

+      "#use the figure to compute it \n",

+      "p=500.\n",

+      "D=5**2\n",

+      "#force=pressure*area\n",

+      "area=0.785*D\n",

+      "F=p*area\n",

+      "print\"%s %.2f %s\"%(\"force \",F,\"lb\")"

+     ],

+     "language": "python",

+     "metadata": {},

+     "outputs": [

+      {

+       "output_type": "stream",

+       "stream": "stdout",

+       "text": [

+        "force  9812.50 lb\n"

+       ]

+      }

+     ],

+     "prompt_number": 6

+    }

+   ],

+   "metadata": {}

+  }

+ ]

+}
\ No newline at end of file
diff --git a/f_by_df/screenshots/array_factor_TIPCqXh.png b/f_by_df/screenshots/array_factor_TIPCqXh.png
new file mode 100644
index 00000000..9e294010
--- /dev/null
+++ b/f_by_df/screenshots/array_factor_TIPCqXh.png
diff --git a/f_by_df/screenshots/array_factor_iQfSDI6.png b/f_by_df/screenshots/array_factor_iQfSDI6.png
new file mode 100644
index 00000000..9e294010
--- /dev/null
+++ b/f_by_df/screenshots/array_factor_iQfSDI6.png
diff --git a/f_by_df/screenshots/blank1_copy.png b/f_by_df/screenshots/blank1_copy.png
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/f_by_df/screenshots/blank1_copy.png