Chapter 44 DIFFRACTION

Example 44.1 Calculation of wavelength

In [1]:
from __future__ import division
import math
m=1
lamda=6500 #in A
a=(m*lamda)/math.sin(30*math.pi/180)
print("a in A=%d"%a)

a in A=13000

Example 44.2 Calculation of wavelength

In [2]:
from __future__ import division
lamda=6500
lambda_1=lamda/1.5
print("Wavelength in A = %.3f"%lambda_1)

Wavelength in A = 4333.333

Example 44.5 Current

In [3]:
from __future__ import division
import math
m_0=(4*math.pi*10**-7) #in weber
e_0=(8.9*10**-12)
R=5*10**-2  #meters
byd=10**12
i_d=(e_0*math.pi*R*R*byd)
print("Current in amp= %.5f"%i_d)

Current in amp= 0.06990

Example 44.7 Delta Y

In [4]:
from __future__ import division
lamda=480*10**-9 #in m
d=0.10*10**-3 #in m
D=50*10**-2 #in m
a=0.02*10**-3
delta_y=(lamda*D)/d
print("(A) D in m= %.5f"%delta_y)

(A) D in m= 0.00240