1 files changed, 0 insertions, 16 deletions
diff --git a/Materials_science_and_engineering_an_introduction/CH12.ipynb b/Materials_science_and_engineering_an_introduction/CH12.ipynb
index ee793447..b2774698 100644
--- a/Materials_science_and_engineering_an_introduction/CH12.ipynb
+++ b/Materials_science_and_engineering_an_introduction/CH12.ipynb
@@ -27,16 +27,12 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Computation of Minimum Caion-to-Anion Radius Ratio forCo-ordination No. of 3\n",
       "\n",
-      "#For equilateral triangle after joining centres of the atoms Angle = 30\n",
       "a=30\n",
       "\n",
-      "#Calculation\n",
       "import math\n",
       "ratio=(1-math.cos(a*math.pi/180.0))/math.cos(a*math.pi/180.0)\n",
       "\n",
-      "#Result\n",
       "print\"Cation to anion raio is \",round(ratio,3)\n",
       "\n"
      ],
@@ -65,16 +61,12 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Ceramic Crystal structure prediction\n",
       "\n",
-      "#Given\n",
       "r_Fe=0.077  # in nm Radius of iron cation Fe++\n",
       "r_O=0.140  #in nm  Radius of Oxygen anion O--\n",
       "\n",
-      "#Calculation\n",
       "ratio=r_Fe/r_O\n",
       "\n",
-      "#Result\n",
       "print\"Ratio is \",ratio\n",
       "if 0.414<ratio<0.732:  \n",
       "    print\"Co-ordinaton no. is 6\"\n",
@@ -110,22 +102,18 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Theoretical Density Determination for NaCl\n",
       "\n",
-      "#Given\n",
       "A_Na=22.99         # in g/mol\n",
       "A_Cl=35.45          #in g/mol\n",
       "r_Na=0.102*10**-7  #in cm Radius of Na+ ion\n",
       "r_Cl=0.181*10**-7  #in cm Radius of Cl- ion\n",
       "Na=6.023*10**23  #Avogadro number\n",
       "\n",
-      "#Calculation\n",
       "a=2*(r_Na+r_Cl)\n",
       "V=a**3\n",
       "n=4                 #For FCC, no. of atoms are 4 per crystal\n",
       "density=n*(A_Na+A_Cl)/(V*Na)\n",
       "\n",
-      "#Result\n",
       "print\"Density is \",round(density,2),\"gm/cm**3\"\n",
       "\n"
      ],
@@ -154,15 +142,12 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "#Computation of the No. of Schottky Defects in KCl\n",
       "\n",
-      "#Given\n",
       "Na=6.023*10**23   #Avogadro number\n",
       "density=1.955     #in g/cm**3\n",
       "A_K=39.1          #in g/mol\n",
       "A_Cl=35.45        #in g/mol\n",
       "\n",
-      "#calculation\n",
       "import math\n",
       "N=Na*density*10**6/(A_K+A_Cl)\n",
       "Qs=2.6           # in eV\n",
@@ -170,7 +155,6 @@
       "T=500.0+273.0        # in K\n",
       "Ns=N*math.exp(-Qs/(2*k*T))\n",
       "\n",
-      "#result\n",
       "print\"No. of Schottky Defects are \",round(Ns,-17),\"/m**3\"\n",
       "\n"
      ],