1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter22 Crystals"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 22.1, Page no.81"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"distance between planes = 50.0 M A\n",
"distance between planes = 70.71 M A\n",
"distance between planes = 28.87 M A\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"from math import sqrt\n",
"d=0.856 #g/ cc\n",
"N=6*10**23 # molecules\n",
"M=39.1 #g moleˆ−1\n",
"n=2\n",
"n1=4\n",
"n2=12\n",
"#CALCULATIONS \n",
"a=(n*M/(N*d))**(1/3) \n",
"d=a*10**8/ sqrt(n1)\n",
"d1=a*10**8/ sqrt(n) \n",
"d2=a*10**8/ sqrt(n2) \n",
"#RESULTS\n",
"d=d/10**6\n",
"d1=d1/10**6\n",
"d2=d2/10**6\n",
"d1=round(d1,2)\n",
"d2=round(d2,2)\n",
"print 'distance between planes =',d,'M A'\n",
"print 'distance between planes =',d1,'M A'\n",
"print 'distance between planes =',d2,'M A'"
]
}
],
"metadata": {
"anaconda-cloud": {},
"kernelspec": {
"display_name": "Python [Root]",
"language": "python",
"name": "Python [Root]"
},
"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
}
|
