Question

Write a program to explain the how the intensity varies as a function of phase difference / path difference in interference of two sinusoidal waves.

Answer 1

The intensity of the net waves disturbance can be expressed

$I=4I_0 \cos^2 {\frac{δ}{2}} × \cos^2 {(ѡt+\frac{δ}{2})}$

where δ is the phase difference

We can rewrite this equation as

$I=2I_0 \cos^2 {\frac{δ}{2}}$