blob: 90c9af1c26589b789537012c63765ca6d5acb2e2 (
plain)
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
|
//Chapter-1,Example1_2_2,pg 1-12
u=1.33 //refractive index of soap film
t=5*10^-5 //thickness of soap film
//for normal incidence
r=0 //angle of refraction
//for constructive interference '2*u*t*cos(r) = (2*n-1)*wavelength/2'
wavelength_1=(2*u*t*cos(r)*2/(2*1-1))*10^8 //for n=1
wavelength_2=(2*u*t*cos(r)*2/(2*2-1))*10^8 //for n=2
wavelength_3=(2*u*t*cos(r)*2/(2*3-1))*10^8 //for n=3
wavelength_4=(2*u*t*cos(r)*2/(2*4-1))*10^8 //for n=4
//visible range of wavelengths is 4000 A. to 7000 A.
printf('\n for n=1 wavelength = %.1f A.\n',wavelength_1)
printf('\n for n=2 wavelength = %.1f A.\n',wavelength_2)
printf('\n for n=3 wavelength = %.1f A.\n',wavelength_3)
printf('\n for n=4 wavelength = %.1f A.\n',wavelength_4)
printf('\n The wavelength will be reflected is wavelength = %.1f A.\n',wavelength_3)
|
