Modul
e
17 : Surfaces, Surface Area, Surface integrals, Divergence Theorem and applications
Lecture
50 : Application of surface integrals [Section 50.2]
Figure: Sphere with inward and outward normal
(ii)
If
is the boundary of an annulus region in space, it is orientable. For example, the surface enclosing two
concentric spheres is orientable (note, it is not connected).
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
is the boundary of an annulus region in space, it is orientable. For example, the surface enclosing two
